Choosing the Best Java IDE Guide: JDeveloper IDE

Learn how to use JDeveloper IDE, a powerful and versatile Java IDE that integrates with Oracle database and supports various frameworks and libraries.

Table of Contents

1. Introduction

Java is one of the most popular and widely used programming languages in the world. It is versatile, powerful, and portable, making it suitable for various applications and platforms. However, to write, run, and debug Java code effectively, you need a good integrated development environment (IDE).

An IDE is a software application that provides a set of tools and features to help developers write, compile, execute, and debug code. Some of the common features of an IDE are:

A code editor that supports syntax highlighting, code completion, and error detection.
A compiler that translates the source code into executable code.
A debugger that allows the developer to inspect and modify the state of the program during execution.
A project manager that organizes the files and resources of the project.
A graphical user interface (GUI) builder that helps the developer create and design user interfaces.
A code analyzer that checks the quality and performance of the code.
A testing tool that helps the developer run and automate tests.
A version control system that helps the developer manage the changes and revisions of the code.

There are many IDEs available for Java development, each with its own advantages and disadvantages. Some of the most popular ones are Eclipse, NetBeans, IntelliJ IDEA, and Visual Studio Code. However, in this tutorial, we will focus on a lesser-known but powerful and comprehensive Java IDE: JDeveloper.

JDeveloper is a free and open-source IDE developed by Oracle Corporation. It is designed to support the development of Java applications, especially those that use Oracle technologies and frameworks. JDeveloper offers a rich set of features and tools that make Java development easier and faster.

In this tutorial, you will learn how to use JDeveloper IDE for Java development. You will learn how to:

Install and set up JDeveloper IDE on your computer.
Create and run a simple Java project in JDeveloper IDE.
Connect to Oracle database in JDeveloper IDE and perform basic operations.
Use frameworks and libraries in JDeveloper IDE to enhance your Java applications.
Debug and test your Java code in JDeveloper IDE using various tools and techniques.
Deploy and publish your Java applications in JDeveloper IDE using different methods and platforms.

By the end of this tutorial, you will have a solid understanding of JDeveloper IDE and its capabilities. You will be able to use JDeveloper IDE to develop and deploy Java applications that use Oracle technologies and frameworks.

Are you ready to get started? Let’s dive into JDeveloper IDE and see what it can do for you!

2. What is JDeveloper IDE?

JDeveloper IDE is an integrated development environment (IDE) that supports the development of Java applications, especially those that use Oracle technologies and frameworks. JDeveloper IDE was created by Oracle Corporation and is available as a free and open-source software.

JDeveloper IDE is more than just a code editor. It is a comprehensive and powerful tool that provides a complete solution for Java development. JDeveloper IDE offers a rich set of features and tools that help you write, compile, run, debug, test, and deploy Java applications. Some of the main features and tools of JDeveloper IDE are:

A code editor that supports syntax highlighting, code completion, code templates, code folding, code refactoring, code formatting, code navigation, code inspection, and code generation.
A compiler that supports Java SE, Java EE, Java ME, and Java FX platforms, and allows you to compile your code with a single click or automatically.
A debugger that supports breakpoints, watches, expressions, variables, threads, call stack, and memory views, and allows you to debug your code step by step, line by line, or at any point of execution.
A project manager that supports various project types, such as Java SE, Java EE, Java ME, Java FX, Web Services, ADF, and SOA, and allows you to create, import, export, and manage your projects and their dependencies.
A graphical user interface (GUI) builder that supports Swing, Java FX, ADF Faces, and HTML5 components, and allows you to create and design user interfaces by dragging and dropping components, setting properties, and editing code.
A code analyzer that supports code quality, code metrics, code audit, code coverage, and code profiling, and allows you to check and improve the quality and performance of your code.
A testing tool that supports JUnit, TestNG, Selenium, and Cucumber frameworks, and allows you to create, run, and automate unit tests, functional tests, integration tests, and acceptance tests.
A version control system that supports Git, SVN, CVS, and Mercurial repositories, and allows you to manage the changes and revisions of your code.
A deployment tool that supports various deployment targets, such as local, remote, cloud, and embedded devices, and allows you to deploy and publish your Java applications with ease.

As you can see, JDeveloper IDE is a complete and versatile IDE that covers all aspects of Java development. JDeveloper IDE is especially useful for developing Java applications that use Oracle technologies and frameworks, such as Oracle Database, Oracle Fusion Middleware, Oracle ADF, Oracle SOA, Oracle WebLogic Server, and Oracle Cloud.

Why should you use JDeveloper IDE for Java development? What are the benefits of JDeveloper IDE over other IDEs? Let’s find out in the next section.

2.1. Features of JDeveloper IDE

In the previous section, you learned what JDeveloper IDE is and what it can do for you. In this section, you will learn more about the features of JDeveloper IDE and how they can help you with your Java development.

JDeveloper IDE has many features that make it a powerful and comprehensive IDE for Java development. Some of the main features are:

Code Editor: JDeveloper IDE has a code editor that supports syntax highlighting, code completion, code templates, code folding, code refactoring, code formatting, code navigation, code inspection, and code generation. The code editor helps you write your code faster and easier, with less errors and more consistency. You can also customize the code editor to suit your preferences and needs.
Compiler: JDeveloper IDE has a compiler that supports Java SE, Java EE, Java ME, and Java FX platforms, and allows you to compile your code with a single click or automatically. The compiler helps you check your code for errors and warnings, and generate executable code that can run on various platforms. You can also configure the compiler to optimize your code for performance and compatibility.
Debugger: JDeveloper IDE has a debugger that supports breakpoints, watches, expressions, variables, threads, call stack, and memory views, and allows you to debug your code step by step, line by line, or at any point of execution. The debugger helps you find and fix bugs in your code, and monitor and modify the state of your program during execution. You can also use the debugger to test and debug your code remotely or on embedded devices.
Project Manager: JDeveloper IDE has a project manager that supports various project types, such as Java SE, Java EE, Java ME, Java FX, Web Services, ADF, and SOA, and allows you to create, import, export, and manage your projects and their dependencies. The project manager helps you organize your files and resources, and manage your project lifecycle. You can also use the project manager to integrate your projects with other tools and frameworks, such as Maven, Ant, Gradle, and Spring.
Graphical User Interface (GUI) Builder: JDeveloper IDE has a graphical user interface (GUI) builder that supports Swing, Java FX, ADF Faces, and HTML5 components, and allows you to create and design user interfaces by dragging and dropping components, setting properties, and editing code. The GUI builder helps you create and design user interfaces that are attractive, interactive, and responsive. You can also use the GUI builder to create and design web pages and mobile applications.
Code Analyzer: JDeveloper IDE has a code analyzer that supports code quality, code metrics, code audit, code coverage, and code profiling, and allows you to check and improve the quality and performance of your code. The code analyzer helps you identify and eliminate code smells, code duplication, code complexity, code violations, and code bottlenecks. You can also use the code analyzer to generate reports and charts that show the quality and performance of your code.
Testing Tool: JDeveloper IDE has a testing tool that supports JUnit, TestNG, Selenium, and Cucumber frameworks, and allows you to create, run, and automate unit tests, functional tests, integration tests, and acceptance tests. The testing tool helps you verify and validate the functionality, usability, reliability, and security of your code. You can also use the testing tool to generate test cases, test data, test reports, and test coverage.
Version Control System: JDeveloper IDE has a version control system that supports Git, SVN, CVS, and Mercurial repositories, and allows you to manage the changes and revisions of your code. The version control system helps you track and control the history and evolution of your code, and collaborate with other developers. You can also use the version control system to branch, merge, tag, and compare your code.
Deployment Tool: JDeveloper IDE has a deployment tool that supports various deployment targets, such as local, remote, cloud, and embedded devices, and allows you to deploy and publish your Java applications with ease. The deployment tool helps you package and distribute your code, and run it on different environments and platforms. You can also use the deployment tool to deploy and publish your code to Oracle Cloud, Oracle WebLogic Server, Oracle Database, and Oracle Fusion Middleware.

These are some of the main features of JDeveloper IDE that make it a powerful and comprehensive IDE for Java development. Of course, there are many more features and tools that JDeveloper IDE offers, and you can explore them in more detail in the official documentation.

Now that you know the features of JDeveloper IDE, you might be wondering why you should use it over other IDEs. What are the benefits of JDeveloper IDE that make it stand out from the crowd? Let’s find out in the next section.

2.2. Benefits of JDeveloper IDE

JDeveloper IDE is not just another IDE for Java development. It is a unique and powerful IDE that offers many benefits over other IDEs. Some of the main benefits of JDeveloper IDE are:

Oracle Integration: JDeveloper IDE is developed by Oracle Corporation, the same company that develops Oracle Database, Oracle Fusion Middleware, Oracle ADF, Oracle SOA, Oracle WebLogic Server, and Oracle Cloud. This means that JDeveloper IDE is fully integrated with these Oracle technologies and frameworks, and provides seamless support and compatibility for them. You can easily connect to Oracle Database, use Oracle Fusion Middleware components, develop Oracle ADF applications, create Oracle SOA services, deploy to Oracle WebLogic Server, and publish to Oracle Cloud using JDeveloper IDE. You can also access Oracle documentation, tutorials, forums, and support from within JDeveloper IDE.
Comprehensive and Versatile: JDeveloper IDE is a comprehensive and versatile IDE that covers all aspects of Java development. You can use JDeveloper IDE to develop Java applications for various platforms, such as Java SE, Java EE, Java ME, Java FX, Web Services, ADF, and SOA. You can also use JDeveloper IDE to create and design user interfaces, web pages, and mobile applications using Swing, Java FX, ADF Faces, and HTML5 components. You can also use JDeveloper IDE to check and improve the quality and performance of your code, test and debug your code, and deploy and publish your code to various targets, such as local, remote, cloud, and embedded devices.
Easy and Fast: JDeveloper IDE is an easy and fast IDE that helps you write, compile, run, debug, test, and deploy your code with less effort and time. You can use JDeveloper IDE to write your code faster and easier, with features such as syntax highlighting, code completion, code templates, code folding, code refactoring, code formatting, code navigation, code inspection, and code generation. You can also use JDeveloper IDE to compile your code with a single click or automatically, run your code with a single click or automatically, debug your code step by step, line by line, or at any point of execution, test your code with a single click or automatically, and deploy your code with a single click or automatically.

These are some of the main benefits of JDeveloper IDE that make it a superior and preferable IDE for Java development. Of course, there are many more benefits that JDeveloper IDE offers, and you can discover them by using JDeveloper IDE yourself.

Now that you know the benefits of JDeveloper IDE, you might be eager to try it out and see how it works. How can you install and set up JDeveloper IDE on your computer? Let’s find out in the next section.

3. How to Install and Set Up JDeveloper IDE

In this section, you will learn how to install and set up JDeveloper IDE on your computer. You will need a computer that meets the following minimum requirements:

Operating system: Windows, Linux, or Mac OS X.
Processor: Intel Core 2 Duo or higher.
Memory: 4 GB or more.
Disk space: 10 GB or more.
Java Development Kit (JDK): 8 or higher.

To install and set up JDeveloper IDE, follow these steps:

Download the latest version of JDeveloper IDE from the official website. You can choose between the Studio Edition, which includes all the features and tools of JDeveloper IDE, or the Java Edition, which includes only the core features and tools for Java development. You can also choose between the generic installer, which requires a JDK to be installed separately, or the platform-specific installer, which includes a JDK.
Run the installer and follow the instructions on the screen. You can choose the default installation options, or customize them according to your preferences and needs. You can also choose the installation directory, the JDK location, and the JDeveloper IDE home directory.
After the installation is complete, launch JDeveloper IDE from the Start menu (Windows), the Applications folder (Mac OS X), or the bin directory (Linux). You will see the JDeveloper IDE splash screen, followed by the JDeveloper IDE welcome screen.
On the welcome screen, you can choose to create a new application, open an existing application, or browse the tutorials and documentation. You can also access the preferences, extensions, updates, and help menus from the toolbar.
To create a new application, click on the New Application icon on the toolbar, or select File > New > Application from the menu. You will see the New Gallery dialog, where you can choose the type of application you want to create, such as Java SE, Java EE, Java ME, Java FX, Web Services, ADF, or SOA. You can also choose from various templates and samples that are provided by JDeveloper IDE.
After you choose the type of application, click on OK. You will see the Create Application dialog, where you can specify the name, location, and configuration of your application. You can also choose the project structure, the technologies, the frameworks, and the libraries that you want to use for your application.
After you specify the details of your application, click on Finish. JDeveloper IDE will create your application and open it in the Application Navigator window. You will see the files and folders of your application, such as the source code, the resources, the libraries, the deployment profiles, and the application properties.
To run your application, right-click on the project node in the Application Navigator window, and select Run from the context menu. JDeveloper IDE will compile and execute your application, and show the output in the Log window. You can also use the Run, Debug, and Profile buttons on the toolbar to run, debug, and profile your application.

Congratulations! You have successfully installed and set up JDeveloper IDE on your computer, and created and run your first application. You are now ready to use JDeveloper IDE for your Java development.

In the next section, you will learn how to create and run a simple Java project in JDeveloper IDE, and see how JDeveloper IDE helps you write, compile, and execute your code.

4. How to Create and Run a Java Project in JDeveloper IDE

Now that you have installed and set up JDeveloper IDE on your computer, you are ready to create and run your first Java project in JDeveloper IDE. A Java project is a collection of Java source files, resources, libraries, and configuration files that define a Java application. JDeveloper IDE allows you to create various types of Java projects, such as Java SE, Java EE, Java ME, Java FX, Web Services, ADF, and SOA.

In this section, you will learn how to create and run a simple Java SE project in JDeveloper IDE. A Java SE project is a standard Java project that uses the Java Platform, Standard Edition (Java SE) to develop desktop and console applications. You will create a Java SE project that contains a single Java class that prints “Hello, World!” to the console.

To create and run a Java SE project in JDeveloper IDE, follow these steps:

Open JDeveloper IDE and select File > New > Application. This will open the Create Application wizard.
In the Create Application wizard, select Java Desktop Application as the application template and click Next.
In the Application Name page, enter a name for your application, such as HelloWorld, and a directory to store your application files, such as C:\Users\YourName\JDeveloper\HelloWorld. Click Next.
In the Project Name page, enter a name for your project, such as HelloWorld, and a package name for your Java classes, such as com.example.helloworld. Click Finish.
JDeveloper IDE will create a Java SE application with a default Java SE project. You will see the project structure in the Application Navigator window on the left side of the IDE. You will also see a default Java class named Main.java in the src folder of your project. This is the main class of your Java application.
Double-click on the Main.java file to open it in the code editor. You will see the following code:

package com.example.helloworld;

public class Main {
    public static void main(String[] args) {
        // TODO: Add your code here
    }
}

This is a simple Java class that contains a main method. The main method is the entry point of your Java application. It is where you write the code that will be executed when you run your application.

To print “Hello, World!” to the console, you need to use the System.out.println method. This method takes a string as an argument and prints it to the standard output stream, which is usually the console. Add the following line of code inside the main method:

System.out.println("Hello, World!");

Your code should look like this:

package com.example.helloworld;

public class Main {
    public static void main(String[] args) {
        System.out.println("Hello, World!");
    }
}

You have just written your first Java program in JDeveloper IDE. To run your program, right-click on the Main.java file in the Application Navigator window and select Run. This will compile and execute your code. You will see the output of your program in the Log window at the bottom of the IDE. You should see something like this:

[Starting Java Project HelloWorld]
Hello, World!
[Finished Java Project HelloWorld]

Congratulations! You have successfully created and run a Java SE project in JDeveloper IDE. You have learned how to use JDeveloper IDE to write, compile, and execute Java code. You can modify your code and run it again to see the changes. You can also create more Java classes and methods in your project and use them in your main class.

In the next section, you will learn how to connect to Oracle database in JDeveloper IDE and perform basic operations.

5. How to Connect to Oracle Database in JDeveloper IDE

One of the main advantages of JDeveloper IDE is its integration with Oracle database. Oracle database is a powerful and reliable relational database management system (RDBMS) that supports various data types, operations, and functions. Oracle database is widely used for storing, processing, and analyzing data for various applications and platforms.

JDeveloper IDE allows you to connect to Oracle database and perform basic operations, such as creating, querying, updating, and deleting data. JDeveloper IDE also provides a graphical user interface (GUI) for working with Oracle database, such as the Database Navigator, the SQL Worksheet, and the Data Editor. These tools help you to interact with Oracle database in a convenient and efficient way.

In this section, you will learn how to connect to Oracle database in JDeveloper IDE and perform some basic operations. You will need to have Oracle database installed and running on your computer or on a remote server. You will also need to have a valid username and password to access Oracle database.

To connect to Oracle database in JDeveloper IDE, follow these steps:

Open JDeveloper IDE and select View > Database > Database Navigator. This will open the Database Navigator window on the right side of the IDE. The Database Navigator window shows the list of database connections that you have created or imported in JDeveloper IDE.
In the Database Navigator window, right-click on the Connections node and select New Connection. This will open the Create Database Connection wizard.
In the Create Database Connection wizard, enter a name for your connection, such as OracleDB, and select Oracle (JDBC) as the connection type. Click Next.
In the Connection Details page, enter the username and password for your Oracle database, such as system and oracle. You can also check the Save Password option if you want JDeveloper IDE to remember your password. Click Next.
In the Driver Settings page, enter the host name, port number, and SID or service name of your Oracle database, such as localhost, 1521, and orcl. You can also use the Test Connection button to verify that your connection settings are correct. Click Finish.
JDeveloper IDE will create a new database connection and add it to the Database Navigator window. You will see the connection name, status, and details in the window. You can also expand the connection node to see the database objects, such as tables, views, indexes, procedures, and functions.

You have successfully connected to Oracle database in JDeveloper IDE. You can now use JDeveloper IDE to perform various operations on Oracle database, such as creating, querying, updating, and deleting data. You can also use JDeveloper IDE to create and execute SQL and PL/SQL scripts, import and export data, and generate reports.

In the next section, you will learn how to use frameworks and libraries in JDeveloper IDE to enhance your Java applications.

6. How to Use Frameworks and Libraries in JDeveloper IDE

Frameworks and libraries are collections of reusable code that provide common functionality and features for Java development. Frameworks and libraries can help you to simplify and speed up your Java development process, as well as to enhance the quality and performance of your Java applications.

JDeveloper IDE supports various frameworks and libraries for Java development, such as Spring, Hibernate, Struts, JSF, ADF, JPA, JDBC, JAX-WS, JAX-RS, and more. JDeveloper IDE allows you to use frameworks and libraries in your Java projects, as well as to create and manage your own frameworks and libraries.

In this section, you will learn how to use frameworks and libraries in JDeveloper IDE. You will learn how to:

Add frameworks and libraries to your Java project.
Configure frameworks and libraries for your Java project.
Use frameworks and libraries in your Java code.
Create and manage your own frameworks and libraries.

To use frameworks and libraries in JDeveloper IDE, follow these steps:

Open JDeveloper IDE and select the Java project that you want to use frameworks and libraries in. You can use the same Java SE project that you created and ran in the previous section, or you can create a new Java project of any type.
In the Application Navigator window, right-click on the project node and select Project Properties. This will open the Project Properties dialog.
In the Project Properties dialog, select Libraries and Classpath from the left panel. This will show the list of libraries and classpath entries that are currently used by your project.
To add a framework or library to your project, click on the Add Library button. This will open the Add Library dialog.
In the Add Library dialog, select the framework or library that you want to add to your project from the list of available libraries. You can also use the Filter field to search for a specific framework or library by name. For example, if you want to add the Spring framework to your project, you can type Spring in the Filter field and select the Spring library from the list. Click OK.
JDeveloper IDE will add the selected framework or library to your project and update the list of libraries and classpath entries in the Project Properties dialog. You will see the name, version, and location of the framework or library in the list. You can also see the list of JAR files that are included in the framework or library by expanding the library node.
To configure the framework or library for your project, select the framework or library from the list and click on the Edit button. This will open the Edit Library dialog.
In the Edit Library dialog, you can modify the settings and options of the framework or library for your project. For example, you can change the version, location, and scope of the framework or library, as well as add or remove JAR files, source files, and documentation files. You can also specify the deployment profile and the runtime dependencies of the framework or library. Click OK when you are done.
JDeveloper IDE will save the changes and update the configuration of the framework or library for your project. You can also see the changes reflected in the Project Properties dialog.
To use the framework or library in your Java code, you can simply import the classes and methods that are provided by the framework or library in your Java source files. For example, if you want to use the Spring framework in your Java code, you can import the classes and methods from the org.springframework package in your Java source files. You can also use the code editor features, such as code completion, code templates, code navigation, and code inspection, to help you write and use the framework or library code.
To create and manage your own frameworks and libraries, you can use the Library Manager tool in JDeveloper IDE. The Library Manager tool allows you to create, edit, delete, import, and export your own frameworks and libraries, as well as to share them with other projects and developers. You can access the Library Manager tool by selecting Tools > Manage Libraries from the main menu of JDeveloper IDE.

You have successfully used frameworks and libraries in JDeveloper IDE. You have learned how to add, configure, and use frameworks and libraries in your Java projects, as well as to create and manage your own frameworks and libraries. You can use frameworks and libraries to enhance the functionality and features of your Java applications, as well as to simplify and speed up your Java development process.

In the next section, you will learn how to debug and test your Java code in JDeveloper IDE using various tools and techniques.

7. How to Debug and Test Java Code in JDeveloper IDE

Debugging and testing are essential steps in the software development process. They help you find and fix errors, bugs, and defects in your code, and ensure that your Java applications work as expected and meet the quality standards.

JDeveloper IDE provides various tools and features that help you debug and test your Java code in an easy and efficient way. In this section, you will learn how to use some of these tools and features, such as:

The debugger that allows you to run your code in debug mode, set breakpoints, watch variables, evaluate expressions, and control the execution flow.
The code analyzer that allows you to check the quality and performance of your code, and identify potential issues, such as code smells, code duplication, code complexity, code coverage, and code profiling.
The testing tool that allows you to create, run, and automate tests for your code, using various testing frameworks, such as JUnit, TestNG, Selenium, and Cucumber.

Let’s start with the debugger. How can you use the debugger to debug your Java code in JDeveloper IDE?

7.1. How to Use the Debugger in JDeveloper IDE

The debugger is a tool that allows you to run your code in debug mode, and inspect and modify the state of the program during execution. You can use the debugger to find and fix errors, bugs, and defects in your code, and verify the logic and functionality of your code.

To use the debugger in JDeveloper IDE, you need to follow these steps:

Create a debug configuration for your Java project. A debug configuration is a set of parameters that specify how to run your code in debug mode, such as the main class, the arguments, the classpath, the source path, and the breakpoints. You can create a debug configuration by right-clicking on your project in the Application Navigator, and selecting Debug > Edit Debug Configurations. Then, click on the green plus icon, and select Java Application. Give a name to your debug configuration, and fill in the required fields. You can also modify the advanced settings, such as the JVM options, the environment variables, and the launch options.
Set breakpoints in your code. A breakpoint is a marker that tells the debugger to pause the execution of the code at a specific line or method. You can set breakpoints by clicking on the left margin of the code editor, next to the line number or the method name. You can also right-click on the code editor, and select Toggle Breakpoint. You can set as many breakpoints as you want, and you can enable or disable them by clicking on them. You can also edit the properties of the breakpoints, such as the condition, the hit count, the suspend policy, and the actions.
Run your code in debug mode. To run your code in debug mode, you need to select your debug configuration, and click on the green bug icon in the toolbar, or press F11. This will launch your code in debug mode, and the debugger will stop at the first breakpoint that it encounters. You can also run your code in debug mode by right-clicking on your project, class, or method in the Application Navigator, and selecting Debug.
Control the execution flow of your code. When the debugger stops at a breakpoint, you can control the execution flow of your code, using the following commands:

Resume: This command resumes the execution of the code until the next breakpoint or the end of the program. You can use this command by clicking on the green arrow icon in the toolbar, or pressing F9.
Step Into: This command executes the next line of code, and if the line contains a method call, it steps into the method and pauses at the first line. You can use this command by clicking on the yellow arrow icon in the toolbar, or pressing F7.
Step Over: This command executes the next line of code, and if the line contains a method call, it steps over the method and pauses at the next line. You can use this command by clicking on the blue arrow icon in the toolbar, or pressing F8.
Step Out: This command executes the rest of the current method, and returns to the caller method and pauses at the next line. You can use this command by clicking on the red arrow icon in the toolbar, or pressing Shift+F8.
Run to Cursor: This command resumes the execution of the code until the line where the cursor is located, and pauses at that line. You can use this command by right-clicking on the code editor, and selecting Run to Cursor, or pressing Ctrl+F10.

Inspect and modify the state of the program. When the debugger stops at a breakpoint, you can inspect and modify the state of the program, using the following views:

Variables: This view shows the values of the variables in the current scope, such as the local variables, the fields, and the parameters. You can expand or collapse the variables, and you can modify their values by double-clicking on them, or right-clicking on them and selecting Change Value.
Watches: This view shows the values of the expressions that you want to watch, such as the variables, the methods, or the literals. You can add a watch by right-clicking on the code editor, and selecting Add to Watches, or by clicking on the green plus icon in the Watches view. You can also modify the values of the watches by double-clicking on them, or right-clicking on them and selecting Change Value.
Expressions: This view allows you to evaluate any expression that is valid in the current context, such as the variables, the methods, or the literals. You can evaluate an expression by typing it in the text box, and pressing Enter, or by clicking on the Evaluate button. You can also modify the values of the expressions by double-clicking on them, or right-clicking on them and selecting Change Value.
Threads: This view shows the threads that are running in the program, and their status, such as running, suspended, or terminated. You can switch between the threads by double-clicking on them, or right-clicking on them and selecting Make Current. You can also suspend or resume the threads by right-clicking on them and selecting Suspend or Resume.
Call Stack: This view shows the call stack of the current thread, which is the sequence of methods that have been called to reach the current point of execution. You can navigate through the call stack by double-clicking on the methods, or right-clicking on them and selecting Go to Source.
Memory: This view shows the memory usage of the program, such as the heap size, the used memory, the free memory, and the garbage collection activity. You can also perform a garbage collection by clicking on the trash bin icon in the toolbar.

These are the basic steps and features of using the debugger in JDeveloper IDE. You can also use some advanced features, such as conditional breakpoints, exception breakpoints, data breakpoints, remote debugging, and hotswap debugging. You can learn more about these features in the JDeveloper IDE documentation.

Now that you know how to use the debugger, let’s move on to the code analyzer. How can you use the code analyzer to check and improve the quality and performance of your code in JDeveloper IDE?

8. How to Deploy and Publish Java Applications in JDeveloper IDE

Deployment and publishing are the final steps in the software development process. They involve transferring your Java applications from the development environment to the production environment, where they can be accessed and used by the end users.

JDeveloper IDE provides various tools and features that help you deploy and publish your Java applications in an easy and efficient way. In this section, you will learn how to use some of these tools and features, such as:

The deployment tool that allows you to create, configure, and manage deployment profiles and deployment descriptors for your Java applications.
The deployment targets that allow you to deploy your Java applications to various destinations, such as local, remote, cloud, and embedded devices.
The publishing tool that allows you to publish your Java applications to various platforms, such as web servers, application servers, and web services.

Let’s start with the deployment tool. How can you use the deployment tool to create and configure deployment profiles and deployment descriptors for your Java applications in JDeveloper IDE?

8.1. How to Use the Deployment Tool in JDeveloper IDE

The deployment tool is a tool that allows you to create and configure deployment profiles and deployment descriptors for your Java applications. A deployment profile is a set of parameters that specify how to package and deploy your Java applications, such as the archive type, the archive name, the output directory, the dependencies, and the filters. A deployment descriptor is a file that contains the configuration and metadata of your Java applications, such as the components, the resources, the security, and the properties.

To use the deployment tool in JDeveloper IDE, you need to follow these steps:

Create a deployment profile for your Java project. A deployment profile is a reusable template that defines how to package and deploy your Java project. You can create a deployment profile by right-clicking on your project in the Application Navigator, and selecting Deploy > New Deployment Profile. Then, select the type of deployment profile that matches your project type, such as Java SE, Java EE, Web Services, ADF, or SOA. Give a name to your deployment profile, and click on OK. You can also modify the settings of your deployment profile, such as the archive type, the archive name, the output directory, the dependencies, and the filters.
Create a deployment descriptor for your Java project. A deployment descriptor is a file that contains the configuration and metadata of your Java project. You can create a deployment descriptor by right-clicking on your project in the Application Navigator, and selecting New > Deployment Descriptor. Then, select the type of deployment descriptor that matches your project type, such as web.xml, application.xml, ejb-jar.xml, or weblogic.xml. Give a name to your deployment descriptor, and click on OK. You can also modify the contents of your deployment descriptor, such as the components, the resources, the security, and the properties.
Add the deployment profile and the deployment descriptor to your Java project. To add the deployment profile and the deployment descriptor to your Java project, you need to edit the project properties. You can edit the project properties by right-clicking on your project in the Application Navigator, and selecting Project Properties. Then, go to the Deployment section, and select your deployment profile. Click on Edit, and go to the Deployment Descriptor tab. Check the box that says Use Deployment Descriptor, and select your deployment descriptor from the drop-down list. Click on OK, and then on Apply and OK.

These are the basic steps and features of using the deployment tool in JDeveloper IDE. You can also use some advanced features, such as creating custom deployment profiles and deployment descriptors, using deployment plan files, and using deployment scripts. You can learn more about these features in the JDeveloper IDE documentation.

Now that you know how to use the deployment tool, let’s move on to the deployment targets. How can you deploy your Java applications to various destinations, such as local, remote, cloud, and embedded devices, in JDeveloper IDE?

9. Conclusion

In this tutorial, you have learned how to use JDeveloper IDE for Java development. You have learned how to:

Install and set up JDeveloper IDE on your computer.
Create and run a simple Java project in JDeveloper IDE.
Connect to Oracle database in JDeveloper IDE and perform basic operations.
Use frameworks and libraries in JDeveloper IDE to enhance your Java applications.
Debug and test your Java code in JDeveloper IDE using various tools and techniques.
Deploy and publish your Java applications in JDeveloper IDE using different methods and platforms.

By following this tutorial, you have gained a solid understanding of JDeveloper IDE and its capabilities. You have also seen how JDeveloper IDE is a powerful and comprehensive Java IDE that integrates with Oracle technologies and frameworks. JDeveloper IDE offers a rich set of features and tools that make Java development easier and faster.

We hope that this tutorial has been useful and informative for you. If you have any questions or feedback, please feel free to leave a comment below. We would love to hear from you and help you with your Java development journey.

Thank you for reading this tutorial and happy coding!