How to Download JDK 6 for Windows
If you want to develop applications for Java, you need a Java Development Kit (JDK). The JDK includes a compiler, libraries, and tools that help you create Java programs. In this article, you will learn how to download JDK 6 for Windows, which is an older version of Java that some applications may still require.
Introduction
What is JDK 6 and why you might need it
JDK 6 is the sixth major release of the Java Platform, Standard Edition (Java SE). It was released in December 2006 and introduced new features such as scripting language support, performance improvements, JDBC 4.0, Java Compiler API, JAXB 2.0, and more.
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Although JDK 6 is no longer supported by Oracle, some applications may still depend on it or run better with it. For example, if you are working with legacy code or using third-party libraries that are compatible only with JDK 6, you may need to install it on your Windows machine.
What are the system requirements and compatibility issues
To install JDK 6 on Windows, you need a system running Windows XP or later with administrator privileges. You also need a network connection to download the installer file.
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JDK 6 is expected to be binary backwards-compatible with J2SE 5.0, which means that class files compiled with J2SE 5.0 or earlier should run on JDK 6 without modification. However, there may be some minor incompatibilities that affect rare cases or corner cases. You can check the page for more details.
Downloading the JDK Installer
How to access the Oracle Java Archive page
To download JDK 6 for Windows, you need to visit the Oracle Java Archive page, which offers self-service access to some of the historical Java releases.
Using your preferred web browser, navigate to . You will see a list of files for different platforms and versions of JDK 6.
How to accept the license agreement and choose the right version
Before you can download any file from the Oracle Java Archive page, you need to accept the license agreement. The license agreement is the Oracle Binary Code License Agreement for Java SE, which specifies the terms and conditions for using the software.
To accept the license agreement, click on the radio button next to Accept License Agreement. You will then be able to download any file from the page.
To choose the right version of JDK 6 for Windows, you need to consider whether your system is 32-bit or 64-bit. You can check this by right-clicking on My Computer or This PC and selecting Properties. You will see a System type field that indicates whether your system is 32-bit or 64-bit.
If your system is 32-bit, you need to download the file jdk-6u45-windows-i586.exe , which is about 69.85 MB in size. If your system is 64-bit, you need to download the file jdk-6u45-windows-x64.exe, which is about 69.97 MB in size.
Running the JDK Installer
How to start the installation wizard and follow the instructions
Once you have downloaded the JDK installer file, you need to run it to start the installation process. To do this, double-click on the file or right-click on it and select Run as administrator.
You will see a welcome screen that asks you to confirm that you want to install JDK 6. Click Next to continue.
You will then see a screen that asks you to choose the features that you want to install. By default, all features are selected, including Development Tools, Source Code, Public JRE, and Java DB. You can uncheck any feature that you don't need or leave them as they are. Click Next to continue.
How to choose the destination folder and wait for the installation to complete
You will then see a screen that asks you to choose the destination folder for JDK 6. By default, the folder is C:\Program Files\Java\jdk1.6.0_45 . You can change it by clicking on Change or leave it as it is. Click Next to continue.
You will then see a progress bar that shows the status of the installation. Wait for the installation to complete, which may take a few minutes depending on your system speed and network connection.
When the installation is complete, you will see a screen that confirms that JDK 6 has been successfully installed on your system. Click Finish to exit the installer.
Setting Environmental Variables in Java
How to add Java to system variables and create JAVA_HOME variable
To use JDK 6 on your system, you need to set some environmental variables in Java. These variables tell your system where to find Java and how to use it.
To set these variables, you need to access the System Properties window. To do this, right-click on My Computer or This PC and select Properties. Then click on Advanced system settings or Advanced tab. Then click on Environment Variables.
You will see two lists of variables: User variables and System variables. You need to modify the System variables list.
To add Java to system variables, you need to edit the Path variable. This variable tells your system where to look for executable files. To edit it, select it from the list and click on Edit. You will see a text box that contains the current value of the Path variable.
To add Java to this value, you need to append the path of the bin folder of JDK 6 at the end of the text box, separated by a semicolon (;). For example, if your JDK 6 folder is C:\Program Files\Java\jdk1.6.0_45 , you need to add ;C:\Program Files\Java\jdk1.6.0_45\bin at the end of the text box. Click OK to save the changes.
To create JAVA_HOME variable, you need to create a new variable in the System variables list. This variable tells your system where your JDK 6 folder is located. To create it, click on New and enter JAVA_HOME as the variable name and C:\Program Files\Java\jdk1.6.0_45 as the variable value (or whatever your JDK 6 folder is). Click OK to save the changes.
How to test the Java installation by writing and compiling a test script
To test if JDK 6 is working properly on your system, you can write and compile a simple Java program using Notepad and Command Prompt.
To write a Java program, open Notepad and type the following code:
public class HelloWorld public static void main(String[] args) System.out.println("Hello World!");
Save this file as HelloWorld.java in any folder of your choice.
To compile this program, open Command Prompt and navigate to the folder where you saved HelloWorld.java . To do this, use cd command followed by the folder path. For example, if you saved HelloWorld.java in C:\Users\YourName\Desktop , type cd C:\Users\YourName\Desktop and press Enter.
Then type javac HelloWorld.java and press Enter. This will compile your program and create a file called HelloWorld.class in the same folder.
To run this program, type java HelloWorld and press Enter. You should see Hello World! printed on the screen.
Conclusion
In this article, you learned how to download JDK 6 for Windows and install it on your system. You also learned how to set the environmental variables in Java and test the Java installation by writing and compiling a test script. By following these steps, you can use JDK 6 to develop and run Java applications on your Windows machine.
JDK 6 is an older version of Java that may still be useful for some applications or projects. However, if you want to use the latest features and security updates of Java, you should consider downloading and installing a newer version of JDK, such as JDK 11 or JDK 17.
FAQs
What is the difference between JDK and JRE?
JDK stands for Java Development Kit, which is a software package that contains the tools and libraries needed to create and run Java programs. JRE stands for Java Runtime Environment, which is a software package that contains only the components needed to run Java programs. JRE is a subset of JDK, which means that JDK includes JRE. If you want to develop Java applications, you need JDK. If you only want to run Java applications, you need JRE.
How do I uninstall JDK 6 from Windows?
To uninstall JDK 6 from Windows, you need to use the Add or Remove Programs feature in the Control Panel. To do this, open the Control Panel and click on Add or Remove Programs or Programs and Features. Then find Java SE Development Kit 6 Update 45 (or whatever update number you have) in the list of programs and click on Remove or Uninstall. Follow the instructions to complete the uninstallation process.
How do I update JDK 6 to a newer version?
To update JDK 6 to a newer version, you need to download and install the newer version of JDK from the Oracle website. You can choose from different versions of JDK, such as JDK 11 or JDK 17, depending on your needs and preferences. You can also keep JDK 6 on your system if you want to use it for some applications or projects.
How do I switch between different versions of JDK on Windows?
To switch between different versions of JDK on Windows, you need to change the value of the JAVA_HOME variable in the System variables list. This variable tells your system which version of JDK to use by default. To change it, open the System Properties window and click on Environment Variables. Then find JAVA_HOME in the System variables list and click on Edit. Change the value to the path of the JDK folder that you want to use. For example, if you want to use JDK 11, change the value to C:\Program Files\Java\jdk-11 . Click OK to save the changes.
How do I check which version of JDK I have on Windows?
To check which version of JDK you have on Windows, you can use the Command Prompt and type java -version . This will display the version number and other information about your Java installation. For example, if you have JDK 6 Update 45, you will see something like this:
java version "1.6.0_45" Java(TM) SE Runtime Environment (build 1.6.0_45-b06) Java HotSpot(TM) Client VM (build 20.45-b01, mixed mode) 44f88ac181
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