![\"\"](\"https:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2022\/07\/Eclipse-tutorial-1024x576.jpg\")
<\/a>The following table shows an overview of the entire article:<\/p>\n
Table of Contents<\/h3>\n\n- 1. Introduction<\/a><\/dt>\n
- 2. Requirements<\/a><\/dt>\n
- 3. Eclipse Java Download Tutorial<\/a><\/dt>\n
- 4. Installation<\/a><\/dt>\n
- 5. Tool Overview<\/a><\/dt>\n
- 6. Tool Configuration<\/a><\/dt>\n
- 7. Eclipse Java Download – Hello World Example<\/a><\/dt>\n
- \n
\n- 7.1 Writing Your First Program<\/a><\/dt>\n
- 7.2 Executing Your First Program<\/a><\/dt>\n
- 7.3 Debugging Your First Program<\/a><\/dt>\n<\/dl>\n<\/dd>\n
- 8. Useful Features<\/a><\/dt>\n
- \n
\n- 8.1 Code Formatting<\/a><\/dt>\n
- 8.2 Refactoring<\/a><\/dt>\n
- 8.3 Call Hierarchy<\/a><\/dt>\n
- 8.4 Local History for Files<\/a><\/dt>\n<\/dl>\n<\/dd>\n
- 9. Download the Source Code<\/a><\/dt>\n<\/dl>\n<\/div>\n
<\/a>1. Introduction<\/h2>\nEclipse is a well-known and respected Integrated Development Environment (IDE) developed by the Eclipse Foundation. Eclipse is beneficial to programmers because it aids in the development process by providing the following key features:<\/p>\n
\n- An easy to use graphical user interface that navigates through your code hierarchy.<\/li>\n
- Syntax highlighting that displays source code in a color code format to improve readability.<\/li>\n
- Code completion that makes recommendations on methods and parameters as you type.<\/li>\n
- Recommendations on how to fix errors and automatic error correction.<\/li>\n
- A graphical debugger that allows for line-by-line code inspection.<\/li>\n
- Single key compilation and execution of a program.<\/li>\n
- Automatic code generation for commonly used patterns.<\/li>\n
- Integration with source code version control repositories.<\/li>\n<\/ul>\n
There are several benefits to the experienced programmer; however, novice programmers should use IDEs cautiously. Oftentimes, novice programmers become dependent on IDEs without really understanding what is going on behind the scenes, especially as it relates to code generation. Once a programmer understands the basics of writing code from scratch, an IDE is a powerful tool to speed up application development.<\/p>\n
<\/a>2. Requirements<\/h2>\nLet’s see some requirements for the Eclipse Java Download. In order to use the Mars release of Eclipse IDE for Java Developers, at a minimum, Java Development Kit (JDK) 7 is needed. The JDK includes the Java Runtime Environment (JRE), Java Virtual Machine (JVM), and all other tools needed to write, compile, and execute Java programs. If you already have JDK 7 or higher, you do not need to re-install it. However, if you do not have a JDK or an outdated version, go to Oracle<\/a> and download the JDK.<\/p>\n<\/a>3. Eclipse (IDE) Java Download Tutorial<\/h2>\nThere are several versions of Eclipse that cover several different programming languages. Specifically, for this tutorial, we will cover the Mars release of Eclipse for Java Developers. To download Eclipse, go to the Eclipse IDE for Java Developers website<\/a>. When you go to the website, you should see a page similar to what\u2019s shown below.<\/p>\n\n![\"eclipse](\"http:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2016\/03\/Screen-Shot-2.jpg\")
<\/a>Eclipse IDE for Java Developers website<\/figcaption><\/figure>\n<\/div>\nClick on \u201cMars Packages\u201d in the upper right hand corner, which will bring you to a screen similar to what\u2019s shown below.<\/p>\n
\n![\"eclipse](\"http:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2016\/03\/Screen-Shot-3a.jpg\")
<\/a>Eclipse Mars<\/figcaption><\/figure>\n<\/div>\n
<\/a>As mentioned, there are various versions of Eclipse IDE for several languages. This tutorial covers the Eclipse IDE for Java Developers. The version to download is the operating system and JDK version dependent, so make sure you download the version appropriate for your operating system and Java installation. For example, I am using a Mac with a 64-bit installation of Java, so I selected the \u201c64-bit\u201d link next to \u201cMac Cocoa\u201d from the right-hand side of the screen.<\/p>\n\n![\"eclipse](\"http:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2016\/03\/Screen-Shot-4.jpg\")
<\/a>Eclipse Java Download<\/figcaption><\/figure>\n<\/div>\nAfter clicking the link, you should see a screen that is similar to what\u2019s shown below:<\/p>\n
\n![\"eclipse](\"http:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2016\/03\/Screen-Shot-5.jpg\")
<\/a>Mirror Sites<\/figcaption><\/figure>\n<\/div>\nYou should scroll down to view the mirror sites that are available in the \u201cChoose a mirror close to you\u201d section. Select the mirror that is closest to you in the list in order to speed up your download of the tool. Columbia University is the mirror closest to my location; therefore, I clicked on the Columbia University link, which displayed the screen below and started the download process.<\/p>\n
\n![\"eclipse](\"http:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2016\/03\/Screen-Shot-5a.jpg\")
<\/a>Download Success<\/figcaption><\/figure>\n<\/div>\n<\/a>4. Installation<\/h2>\nOnce your download completes, double click the file you downloaded to extract it to your chosen directory. After the compressed file is extracted, no further work is required to install Eclipse apart from making sure you have installed a JDK, which we covered in a previous step. If you are on a Mac, click on the \u201ceclipse\u201d icon file located in the folder where you extracted the file or if you are on Windows, double-click \u201ceclipse.exe\u201d to launch the application.<\/p>\n
Tip<\/strong>
You may see startup errors if you have downloaded a version that doesn\u2019t coincide with your operating system and\/or Java installation version.<\/div>\nThe Workspace Launcher dialog displays:<\/p>\n
\n![\"eclipse](\"http:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2016\/03\/laucher.jpg\")
<\/a>Launcher Dialog<\/figcaption><\/figure>\n<\/div>\nAn Eclipse workspace stores your Eclipse configuration and workspace data. Determine a directory where you would like the workspace to reside, enter a name for the workspace, and click “OK”. For your information, a \u201cworkspace\u201d just represents the physical location on your computer where your files will be stored. After clicking “OK”, the \u201cWelcome to the Eclipse IDE for Java Developers\u201d screen displays. In the upper right hand corner, click on “Workbench”.<\/p>\n
\n![\"eclipse](\"http:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2016\/03\/Screen-Shot-7.jpg\")
<\/a>Workbench<\/figcaption><\/figure>\n<\/div>\n<\/a>5. Tool Overview<\/h2>\nAfter clicking on Workbench, the following screen displays:<\/p>\n
\n![\"Tool](\"http:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2016\/03\/Screen-Shot-9.jpg\")
<\/a>Tool Overview<\/figcaption><\/figure>\n<\/div>\nWhen Eclipse initially launches, it defaults to a view of the \u201cJava Perspective\u201d, which appears in the upper right-hand corner.<\/p>\n
\n![\"Java](\"http:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2016\/03\/current-persp.jpg\")
<\/a>Java Perspective<\/figcaption><\/figure>\n<\/div>\nIn Eclipse, a Perspective is a grouping of related windows and features that allows for a developer to perform a specific set of tasks. The Java Perspective offers views and editors for creating and executing Java applications.<\/p>\n
By default, the main window of the Eclipse IDE includes the following sections:<\/p>\n
\n- Section A – Package Explorer<\/li>\n
- Section B – Editor<\/li>\n
- Section C – Task List<\/li>\n
- Section D – Tabbed Views Pane<\/li>\n<\/ul>\n
The Package Explorer allows you to navigate all of the files associated within a project.<\/p>\n
\n![\"Package](\"http:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2016\/03\/packexp1.jpg\")
<\/a>Package Explorer<\/figcaption><\/figure>\n<\/div>\nYou may open a file by double-clicking on it; the opened file appears in the Editor window.<\/p>\n
The Editor window allows you to modify Java source code or text-based files. You may have more than one Editor window opened at once, each displaying a different file. The example below shows one file called, \u201cHelloWorld.java\u201d.<\/p>\n
\n![\"Editor](\"http:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2016\/03\/editorwin.jpg\")
<\/a>Editor Window<\/figcaption><\/figure>\n<\/div>\nThe Task List links to external bug tracking systems and displays assigned tasks. To learn more about the Task List, read about Eclipse Mylyn.<\/a><\/p>\n\n![\"Task](\"http:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2016\/03\/tasklist.jpg\")
<\/a>Task List<\/figcaption><\/figure>\n<\/div>\nThe Task List view is not to be confused with the \u201cTasks\u201d view. The \u201cTasks\u201d view is discussed in section the Tabbed Views Pane below.<\/p>\n
The Outline window displays the structure of the file currently selected in the Editor window.<\/p>\n
\n![\"Outline](\"http:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2016\/03\/outline.jpg\")
<\/a>Outline View<\/figcaption><\/figure>\n<\/div>\nThe Tabbed Views Pane is located at the bottom of the screen and houses various views that can be hidden or shown based on developer preference. The default views that display within the tabbed pane are Problems, JavaDoc, and Declarations.<\/p>\n
The Problems view shows any error messages or warnings associated with source code found in your project.<\/p>\n
\n![\"Problems](\"http:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2016\/03\/problems.jpg\")
<\/a>Problems View<\/figcaption><\/figure>\n<\/div>\nThe JavaDoc window shows the documentation for an item selected in the Editor window.<\/p>\n
\n![\"JavaDoc](\"http:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2016\/03\/javadoc2.jpg\")
<\/a>JavaDoc View<\/figcaption><\/figure>\n<\/div>\nThe Declarations window tells you about the declaration of the Java object currently selected in the Editor.<\/p>\n
\n![\"Declaration](\"http:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2016\/03\/declarations.jpg\")
<\/a>Declaration View<\/figcaption><\/figure>\n<\/div>\nYou may add additional views to the bottom tabbed pane by clicking on “Window->Show View” and selecting what you want to see.<\/p>\n
\n![\"Show](\"http:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2016\/03\/showview.jpg\")
<\/a>Show View<\/figcaption><\/figure>\n<\/div>\nAt a minimum, add the \u201cConsole\u201d and \u201cTask\u201d tabs as they are very useful during development.
<\/div> <\/div><\/p>\nThe \u201cConsole\u201d view displays your program\u2019s output or any runtime exceptions produced by your code.<\/p>\n
\n![\"Console](\"http:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2016\/03\/console.jpg\")
<\/a>Console View<\/figcaption><\/figure>\n<\/div>\nThe \u201cTasks\u201d view displays markers, such as, \u201c\/\/TODO\u201d that you have placed in your source code as a reminder to yourself to do something.<\/p>\n
\n![\"Tasks](\"http:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2016\/03\/tasksview.jpg\")
<\/a>Tasks View<\/figcaption><\/figure>\n<\/div>\n<\/a>6. Tool Configuration<\/h2>\nBefore starting the first example, ensure that Eclipse is properly configured to your development preferences. From the Eclipse menu bar, select Eclipse->Preferences to open the Preferences dialog box.<\/p>\n
\n![\"Preferences\"](\"http:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2016\/03\/Screen-Shot-13.jpg\")
<\/a>Preferences<\/figcaption><\/figure>\n<\/div>\n\n![\"Preferences\"](\"http:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2016\/03\/Screen-Shot-14.jpg\")
<\/a>Preferences<\/figcaption><\/figure>\n<\/div>\nIn the Preferences dialog, you can setup the configuration information for your workspace and set your own development preferences. Expand the \u201cJava\u201d category and select the “Installed JREs” option.<\/p>\n
\n![\"Installed](\"http:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2016\/03\/Screen-Shot-15.jpg\")
<\/a>Installed JREs<\/figcaption><\/figure>\n<\/div>\nEclipse is smart enough to locate the JREs already installed on your computer. If you have more than one, select the appropriate JRE based on your preferences. If your JRE does not appear in the list, you may add it by clicking \u201cAdd\u201d. Next, under the “Java” category, select the “Compiler” option and set the “Compiler Compliance” Level to the corresponding version of the JDK version you are using.<\/p>\n
\n![\"Compiler](\"http:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2016\/03\/Screen-Shot-16.jpg\")
<\/a>Compiler Options<\/figcaption><\/figure>\n<\/div>\nNext, set your preferences for source code formatting by selecting “Java->Code Style->Formatter”.<\/p>\n
\n![\"Code](\"http:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2016\/03\/Screen-Shot-17.jpg\")
<\/a>Code Formatter<\/figcaption><\/figure>\n<\/div>\nThe \u201cFormatter\u201d section contains workspace preferences for formatting source code. Under the “Active Profile Option”, select the \u201cJava Conventions [built-in]\u201d option for the profile and click “Apply” and then “OK”.<\/p>\n
\n![\"Java](\"http:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2016\/03\/Screen-Shot-18.jpg\")
<\/a>Java Conventions<\/figcaption><\/figure>\n<\/div>\nNow, you are ready to start coding in the Eclipse IDE!<\/p>\n
<\/a>7. Eclipse Java Download – Hello World Example<\/h2>\n<\/a>7.1 Writing Your First Program<\/h3>\nTo begin developing a Java program using Eclipse, create a new project. A project groups source code, configuration settings, and other files into a deployable unit. From the “File” menu, select “New->Java” Project.<\/p>\n
\n![\"New](\"http:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2016\/03\/Screen-Shot-19.jpg\")
<\/a>New Java Project<\/figcaption><\/figure>\n<\/div>\nWhen the \u201cNew Java Project\u201d wizard is displayed, enter a name for your new project; accept all defaults when stepping through the rest of the wizard and click \u2018Finish\u2019.<\/p>\n
\n![\"Create](\"http:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2016\/03\/Screen-Shot-20.jpg\")
<\/a>Create A Java Project<\/figcaption><\/figure>\n<\/div>\nAn empty project displays, as shown below.<\/p>\n
\n![\"Empty](\"http:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2016\/03\/Screen-Shot-21.jpg\")
<\/a>Empty Project<\/figcaption><\/figure>\n<\/div>\nTo add a class to your workspace, right click on your class name and select “New->Class”. In my example, my project name is “HelloWorld” as shown below:<\/p>\n
\n![\"HelloWorld](\"http:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2016\/03\/Screen-Shot-22.jpg\")
<\/a>HelloWorld Class<\/figcaption><\/figure>\n<\/div>\nRight click the name of your newly created package in the Package Explorer and click “New->Class”. The New Java Class dialog displays.<\/p>\n
\n![\"Class](\"http:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2016\/03\/Screen-Shot-23.jpg\")
<\/a>Class Dialog<\/figcaption><\/figure>\n<\/div>\n\n![\"Hello](\"http:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2016\/03\/Screen-Shot-24.jpg\")
<\/a>Hello World Class<\/figcaption><\/figure>\n<\/div>\nEnter a \u201cPackage\u201d and \u201cName\u201d for your class following the example below.<\/p>\n
Under the \u201cWhich method stubs would you like to create?\u201d, leave the default of \u201cInherited abstract methods\u201d and also select \u201cpublic static void main(String[] args)\u201d and click \u201cFinish\u201d.<\/p>\n
- \n
- 7.1 Writing Your First Program<\/a><\/dt>\n
- 7.2 Executing Your First Program<\/a><\/dt>\n
- 7.3 Debugging Your First Program<\/a><\/dt>\n<\/dl>\n<\/dd>\n
- 8. Useful Features<\/a><\/dt>\n
- \n
- \n
- 8.1 Code Formatting<\/a><\/dt>\n
- 8.2 Refactoring<\/a><\/dt>\n
- 8.3 Call Hierarchy<\/a><\/dt>\n
- 8.4 Local History for Files<\/a><\/dt>\n<\/dl>\n<\/dd>\n
- 9. Download the Source Code<\/a><\/dt>\n<\/dl>\n<\/div>\n
<\/a>1. Introduction<\/h2>\n
Eclipse is a well-known and respected Integrated Development Environment (IDE) developed by the Eclipse Foundation. Eclipse is beneficial to programmers because it aids in the development process by providing the following key features:<\/p>\n
- \n
- An easy to use graphical user interface that navigates through your code hierarchy.<\/li>\n
- Syntax highlighting that displays source code in a color code format to improve readability.<\/li>\n
- Code completion that makes recommendations on methods and parameters as you type.<\/li>\n
- Recommendations on how to fix errors and automatic error correction.<\/li>\n
- A graphical debugger that allows for line-by-line code inspection.<\/li>\n
- Single key compilation and execution of a program.<\/li>\n
- Automatic code generation for commonly used patterns.<\/li>\n
- Integration with source code version control repositories.<\/li>\n<\/ul>\n
There are several benefits to the experienced programmer; however, novice programmers should use IDEs cautiously. Oftentimes, novice programmers become dependent on IDEs without really understanding what is going on behind the scenes, especially as it relates to code generation. Once a programmer understands the basics of writing code from scratch, an IDE is a powerful tool to speed up application development.<\/p>\n
<\/a>2. Requirements<\/h2>\n
Let’s see some requirements for the Eclipse Java Download. In order to use the Mars release of Eclipse IDE for Java Developers, at a minimum, Java Development Kit (JDK) 7 is needed. The JDK includes the Java Runtime Environment (JRE), Java Virtual Machine (JVM), and all other tools needed to write, compile, and execute Java programs. If you already have JDK 7 or higher, you do not need to re-install it. However, if you do not have a JDK or an outdated version, go to Oracle<\/a> and download the JDK.<\/p>\n
<\/a>3. Eclipse (IDE) Java Download Tutorial<\/h2>\n
There are several versions of Eclipse that cover several different programming languages. Specifically, for this tutorial, we will cover the Mars release of Eclipse for Java Developers. To download Eclipse, go to the Eclipse IDE for Java Developers website<\/a>. When you go to the website, you should see a page similar to what\u2019s shown below.<\/p>\n
\n<\/a>Eclipse IDE for Java Developers website<\/figcaption><\/figure>\n<\/div>\n Click on \u201cMars Packages\u201d in the upper right hand corner, which will bring you to a screen similar to what\u2019s shown below.<\/p>\n
\n<\/a>Eclipse Mars<\/figcaption><\/figure>\n<\/div>\n
<\/a>As mentioned, there are various versions of Eclipse IDE for several languages. This tutorial covers the Eclipse IDE for Java Developers. The version to download is the operating system and JDK version dependent, so make sure you download the version appropriate for your operating system and Java installation. For example, I am using a Mac with a 64-bit installation of Java, so I selected the \u201c64-bit\u201d link next to \u201cMac Cocoa\u201d from the right-hand side of the screen.<\/p>\n\n<\/a>Eclipse Java Download<\/figcaption><\/figure>\n<\/div>\n After clicking the link, you should see a screen that is similar to what\u2019s shown below:<\/p>\n
\n<\/a>Mirror Sites<\/figcaption><\/figure>\n<\/div>\n You should scroll down to view the mirror sites that are available in the \u201cChoose a mirror close to you\u201d section. Select the mirror that is closest to you in the list in order to speed up your download of the tool. Columbia University is the mirror closest to my location; therefore, I clicked on the Columbia University link, which displayed the screen below and started the download process.<\/p>\n
\n<\/a>Download Success<\/figcaption><\/figure>\n<\/div>\n <\/a>4. Installation<\/h2>\n
Once your download completes, double click the file you downloaded to extract it to your chosen directory. After the compressed file is extracted, no further work is required to install Eclipse apart from making sure you have installed a JDK, which we covered in a previous step. If you are on a Mac, click on the \u201ceclipse\u201d icon file located in the folder where you extracted the file or if you are on Windows, double-click \u201ceclipse.exe\u201d to launch the application.<\/p>\n
Tip<\/strong>
You may see startup errors if you have downloaded a version that doesn\u2019t coincide with your operating system and\/or Java installation version.<\/div>\nThe Workspace Launcher dialog displays:<\/p>\n
\n<\/a>Launcher Dialog<\/figcaption><\/figure>\n<\/div>\n An Eclipse workspace stores your Eclipse configuration and workspace data. Determine a directory where you would like the workspace to reside, enter a name for the workspace, and click “OK”. For your information, a \u201cworkspace\u201d just represents the physical location on your computer where your files will be stored. After clicking “OK”, the \u201cWelcome to the Eclipse IDE for Java Developers\u201d screen displays. In the upper right hand corner, click on “Workbench”.<\/p>\n
\n<\/a>Workbench<\/figcaption><\/figure>\n<\/div>\n <\/a>5. Tool Overview<\/h2>\n
After clicking on Workbench, the following screen displays:<\/p>\n
\n<\/a>Tool Overview<\/figcaption><\/figure>\n<\/div>\n When Eclipse initially launches, it defaults to a view of the \u201cJava Perspective\u201d, which appears in the upper right-hand corner.<\/p>\n
\n<\/a>Java Perspective<\/figcaption><\/figure>\n<\/div>\n In Eclipse, a Perspective is a grouping of related windows and features that allows for a developer to perform a specific set of tasks. The Java Perspective offers views and editors for creating and executing Java applications.<\/p>\n
By default, the main window of the Eclipse IDE includes the following sections:<\/p>\n
- \n
- Section A – Package Explorer<\/li>\n
- Section B – Editor<\/li>\n
- Section C – Task List<\/li>\n
- Section D – Tabbed Views Pane<\/li>\n<\/ul>\n
The Package Explorer allows you to navigate all of the files associated within a project.<\/p>\n
\n<\/a>Package Explorer<\/figcaption><\/figure>\n<\/div>\n You may open a file by double-clicking on it; the opened file appears in the Editor window.<\/p>\n
The Editor window allows you to modify Java source code or text-based files. You may have more than one Editor window opened at once, each displaying a different file. The example below shows one file called, \u201cHelloWorld.java\u201d.<\/p>\n
\n<\/a>Editor Window<\/figcaption><\/figure>\n<\/div>\n The Task List links to external bug tracking systems and displays assigned tasks. To learn more about the Task List, read about Eclipse Mylyn.<\/a><\/p>\n
\n<\/a>Task List<\/figcaption><\/figure>\n<\/div>\n The Task List view is not to be confused with the \u201cTasks\u201d view. The \u201cTasks\u201d view is discussed in section the Tabbed Views Pane below.<\/p>\n
The Outline window displays the structure of the file currently selected in the Editor window.<\/p>\n
\n<\/a>Outline View<\/figcaption><\/figure>\n<\/div>\n The Tabbed Views Pane is located at the bottom of the screen and houses various views that can be hidden or shown based on developer preference. The default views that display within the tabbed pane are Problems, JavaDoc, and Declarations.<\/p>\n
The Problems view shows any error messages or warnings associated with source code found in your project.<\/p>\n
\n<\/a>Problems View<\/figcaption><\/figure>\n<\/div>\n The JavaDoc window shows the documentation for an item selected in the Editor window.<\/p>\n
\n<\/a>JavaDoc View<\/figcaption><\/figure>\n<\/div>\n The Declarations window tells you about the declaration of the Java object currently selected in the Editor.<\/p>\n
\n<\/a>Declaration View<\/figcaption><\/figure>\n<\/div>\n You may add additional views to the bottom tabbed pane by clicking on “Window->Show View” and selecting what you want to see.<\/p>\n
\n<\/a>Show View<\/figcaption><\/figure>\n<\/div>\n At a minimum, add the \u201cConsole\u201d and \u201cTask\u201d tabs as they are very useful during development.
<\/div> <\/div><\/p>\nThe \u201cConsole\u201d view displays your program\u2019s output or any runtime exceptions produced by your code.<\/p>\n
\n<\/a>Console View<\/figcaption><\/figure>\n<\/div>\n The \u201cTasks\u201d view displays markers, such as, \u201c\/\/TODO\u201d that you have placed in your source code as a reminder to yourself to do something.<\/p>\n
\n<\/a>Tasks View<\/figcaption><\/figure>\n<\/div>\n <\/a>6. Tool Configuration<\/h2>\n
Before starting the first example, ensure that Eclipse is properly configured to your development preferences. From the Eclipse menu bar, select Eclipse->Preferences to open the Preferences dialog box.<\/p>\n
\n<\/a>Preferences<\/figcaption><\/figure>\n<\/div>\n \n<\/a>Preferences<\/figcaption><\/figure>\n<\/div>\n In the Preferences dialog, you can setup the configuration information for your workspace and set your own development preferences. Expand the \u201cJava\u201d category and select the “Installed JREs” option.<\/p>\n
\n<\/a>Installed JREs<\/figcaption><\/figure>\n<\/div>\n Eclipse is smart enough to locate the JREs already installed on your computer. If you have more than one, select the appropriate JRE based on your preferences. If your JRE does not appear in the list, you may add it by clicking \u201cAdd\u201d. Next, under the “Java” category, select the “Compiler” option and set the “Compiler Compliance” Level to the corresponding version of the JDK version you are using.<\/p>\n
\n<\/a>Compiler Options<\/figcaption><\/figure>\n<\/div>\n Next, set your preferences for source code formatting by selecting “Java->Code Style->Formatter”.<\/p>\n
\n<\/a>Code Formatter<\/figcaption><\/figure>\n<\/div>\n The \u201cFormatter\u201d section contains workspace preferences for formatting source code. Under the “Active Profile Option”, select the \u201cJava Conventions [built-in]\u201d option for the profile and click “Apply” and then “OK”.<\/p>\n
\n<\/a>Java Conventions<\/figcaption><\/figure>\n<\/div>\n Now, you are ready to start coding in the Eclipse IDE!<\/p>\n
<\/a>7. Eclipse Java Download – Hello World Example<\/h2>\n
<\/a>7.1 Writing Your First Program<\/h3>\n
To begin developing a Java program using Eclipse, create a new project. A project groups source code, configuration settings, and other files into a deployable unit. From the “File” menu, select “New->Java” Project.<\/p>\n
\n<\/a>New Java Project<\/figcaption><\/figure>\n<\/div>\n When the \u201cNew Java Project\u201d wizard is displayed, enter a name for your new project; accept all defaults when stepping through the rest of the wizard and click \u2018Finish\u2019.<\/p>\n
\n<\/a>Create A Java Project<\/figcaption><\/figure>\n<\/div>\n An empty project displays, as shown below.<\/p>\n
\n<\/a>Empty Project<\/figcaption><\/figure>\n<\/div>\n To add a class to your workspace, right click on your class name and select “New->Class”. In my example, my project name is “HelloWorld” as shown below:<\/p>\n
\n<\/a>HelloWorld Class<\/figcaption><\/figure>\n<\/div>\n Right click the name of your newly created package in the Package Explorer and click “New->Class”. The New Java Class dialog displays.<\/p>\n
\n<\/a>Class Dialog<\/figcaption><\/figure>\n<\/div>\n \n<\/a>Hello World Class<\/figcaption><\/figure>\n<\/div>\n Enter a \u201cPackage\u201d and \u201cName\u201d for your class following the example below.<\/p>\n
Under the \u201cWhich method stubs would you like to create?\u201d, leave the default of \u201cInherited abstract methods\u201d and also select \u201cpublic static void main(String[] args)\u201d and click \u201cFinish\u201d.<\/p>\n
- 8.2 Refactoring<\/a><\/dt>\n
- 7.2 Executing Your First Program<\/a><\/dt>\n
![\"Method](\"http:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2016\/03\/Screen-Shot-25.jpg\")
<\/a>![\"HelloWorldClass.java\"](\"http:\/\/examples.javacodegeeks.com\/wp-content\/uploads\/2016\/03\/Screen-Shot-27.jpg\")
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