Download Java SE 6 Archive - Get Older Versions of Java 6 Update 21
- hartmarina81
- Aug 3, 2023
- 9 min read
Download Java 6 Update 21: Why and How
Java is one of the most popular programming languages and platforms in the world. It allows you to run applications and games on your computer, web browser, mobile device, and more. However, to enjoy the full benefits of Java, you need to keep it updated to the latest version. In this article, we will explain what Java 6 Update 21 is, why you need it, and how to download and install it on your computer.
What is Java 6 Update 21 and why do you need it?
Java 6 Update 21 is a release of the Java SE (Standard Edition) platform that was launched in July 2010. It contains several improvements and bug fixes for the Java runtime environment, the Java virtual machine, and the Java development tools. Some of the main features and benefits of Java 6 Update 21 are:
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Java SE 6 Update 21 features and benefits
It includes version 17.0 of the Java HotSpot Virtual Machine, which offers better performance and stability, as well as new features such as compressed object pointers, escape analysis-based optimization, code cache management, and the Garbage First (G1) garbage collector.
It supports custom loading progress indicators for Java Web Start applications and applets, which allow you to enhance the user experience by showing how much of the application has been downloaded during startup.
It adds support for more system configurations, such as Oracle Enterprise Linux, Red Hat Enterprise Linux, Oracle VM, and Google Chrome.
It updates the Olson time zone data to version 2010i, which reflects the latest changes in daylight saving time and time zone rules around the world.
Java SE 6 Update 21 security and compatibility issues
It is not the latest version of Java SE. As of June 2023, the latest version is Java SE 17, which has more features, security patches, and bug fixes than Java SE 6. Oracle recommends downloading the latest JRE (Java Runtime Environment) and JDK (Java Development Kit) versions for production use.
It may not be compatible with some applications or websites that require a newer version of Java. You may encounter errors or performance issues if you try to run them with Java SE 6 Update 21. You should check with the developers or providers of those applications or websites before downloading Java SE 6 Update 21.
It may raise a warning dialog when you mix signed and unsigned code in a Java Web Start application or applet. This is because mixing signed and unsigned code can pose a security risk for your computer. You should only trust signed code from reputable sources and avoid unsigned code if possible.
It may cause a security exception when you drag-and-drop data from a trusted application or applet to an untrusted one. This is because drag-and-drop can result in a null value being passed instead of the expected data. You should only drag-and-drop data from trusted sources and avoid untrusted ones.
As you can see, Java SE 6 Update 21 has both pros and cons. You should weigh them carefully before deciding whether to download it or not. If you decide to download it, here is how you can do it.
How to download and install Java SE 6 Update 21 on your computer
Downloading and installing Java SE 6 Update 21 on your computer is a simple process that takes only a few minutes. Here are the steps you need to follow:
Step 1: Check your current Java version and system requirements
Before you download Java SE 6 Update 21, you should check if you already have it or a newer version installed on your computer. To do this, you can use the online Java version test tool or the offline Java version command. If you have Java SE 6 Update 21 or a newer version, you do not need to download it again. If you have an older version or no version at all, you should check if your system meets the minimum requirements for Java SE 6 Update 21. These are:
Operating SystemProcessorMemoryDisk Space
Windows XP/Vista/7/8/10 (32-bit or 64-bit)Pentium 2 266 MHz or higher128 MB or higher150 MB or higher
Mac OS X 10.5.8 or higher (Intel-based)Intel Core Duo or higher512 MB or higher80 MB or higher
Linux (32-bit or 64-bit)Pentium 2 266 MHz or higher64 MB or higher98 MB or higher
Solaris (SPARC or x86)UltraSPARC IIi 270 MHz or higher, AMD Opteron/Athlon64/Phenom/Turion/Sempron, Intel Xeon/Core2/Core i3/i5/i7/Pentium/Celeron/Atom128 MB or higher120 MB or higher
If your system meets these requirements, you can proceed to the next step. If not, you may need to upgrade your hardware or software before downloading Java SE 6 Update 21.
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Step 2: Download Java SE 6 Update 21 from a trusted source
The next step is to download Java SE 6 Update 21 from a trusted source. You should always download Java from the official Oracle website or from a reputable third-party provider. You should avoid downloading Java from unknown or suspicious sources, as they may contain malware or viruses that can harm your computer. To download Java SE 6 Update 21 from the Oracle website, you can follow these steps:
Go to the .
Select the "Java Archive" link under the "Additional Resources" section.
Select the "Java SE 6" link under the "Java Platform (JDK) / JRE" section.
Select the "Java SE Runtime Environment (JRE) - Downloads" link under the "Java SE Runtime Environment" section.
Select the "Accept License Agreement" radio button under the "Java SE Runtime Environment 6u21" section.
Select the appropriate download link for your operating system and architecture (32-bit or 64-bit).
Save the file to your preferred location on your computer.
To download Java SE 6 Update 21 from a third-party provider, you can follow these steps:
Go to a reputable website that offers Java downloads, such as .
Select the "Download" button for Java SE Runtime Environment (JRE) - Downloads.
Select the appropriate download link for your operating system and architecture (32-bit or 64-bit).
Save the file to your preferred location on your computer.
Note that some third-party providers may require you to create an account or sign up for a newsletter before downloading Java. You should read their terms and conditions carefully before agreeing to anything.
Step 3: Run the installer and follow the instructions
Once you have downloaded the Java SE 6 Update 21 file, you can run the installer and follow the instructions to install it on your computer. The installation process may vary slightly depending on your operating system and the source of the download, but generally, you can follow these steps:
Double-click on the downloaded file to launch the installer.
Select the "Install" button to start the installation.
Select the "Next" button to proceed with the installation.
Select the "Custom" option to choose the features and components you want to install. You can also select the "Typical" option to install the default features and components.
Select the "Next" button to continue with the installation.
Select the "Finish" button to complete the installation.
The installer may ask you to restart your computer or browser after the installation. You should do so to ensure that Java SE 6 Update 21 is installed correctly.
Step 4: Verify that Java SE 6 Update 21 is installed correctly
The final step is to verify that Java SE 6 Update 21 is installed correctly on your computer. You can do this by using the online Java version test tool or the offline Java version command. If you see that Java SE 6 Update 21 is detected and enabled, then you have successfully installed it. If not, you may need to troubleshoot the installation or contact Oracle support for assistance.
How to update and uninstall Java SE 6 Update 21 if needed
Now that you have installed Java SE 6 Update 21 on your computer, you may wonder how to update it or uninstall it if needed. Updating and uninstalling Java SE 6 Update 21 are also simple processes that take only a few minutes. Here are the steps you need to follow:
How to update Java SE 6 Update 21 to the latest version
Updating Java SE 6 Update 21 to the latest version is important for keeping your computer secure and compatible with newer applications and websites. To update Java SE 6 Update 21 to the latest version, you can use the online Java update tool or the offline Java update command. To use the online Java update tool, you can follow these steps:
Go to the .
Select the "Update Now" button to start the update process.
Select the "Yes" button to allow Java to check for updates.
Select the "Install" button to install the latest version of Java.
Select the "Finish" button to complete the update process.
To use the offline Java update command, you can follow these steps:
Open a command prompt window on your computer.
Type "java -version" (without quotes) and press Enter. This will show you your current Java version.
Type "java -update" (without quotes) and press Enter. This will check for updates and install them if available.
Type "java -version" (without quotes) and press Enter again. This will show you your updated Java version.
Note that some applications or websites may require you to restart your computer or browser after updating Java. You should do so to ensure that the latest version of Java is working properly.
How to uninstall Java SE 6 Update 21 from your computer
Uninstalling Java SE 6 Update 21 from your computer is a good idea if you no longer need it or if you encounter problems with it. To uninstall Java SE 6 Update 21 from your computer, you can use the online Java uninstall tool or the offline Java uninstall command. To use the online Java uninstall tool, you can follow these steps:
Go to the .
Select the "Uninstall" button to start the uninstall process.
Select the "Yes" button to allow Java to remove itself from your computer.
Select the "Finish" button to complete the uninstall process.
To use the offline Java uninstall command, you can follow these steps:
Open a command prompt window on your computer.
Type "java -uninstall" (without quotes) and press Enter. This will remove Java from your computer.
Note that some applications or websites may require you to restart your computer or browser after uninstalling Java. You should do so to ensure that Java is completely removed from your system.
Conclusion
In this article, we have explained what Java SE 6 Update 21 is, why you need it, and how to download and install it on your computer. We have also shown you how to update and uninstall it if needed. We hope that this article has been helpful and informative for you. If you have any questions or feedback, please feel free to leave a comment below. Thank you for reading!
Summary of the main points
Java SE 6 Update 21 is a release of the Java platform that contains several improvements and bug fixes for the Java runtime environment, the Java virtual machine, and the Java development tools.
Java SE 6 Update 21 offers features and benefits such as better performance and stability, custom loading progress indicators, support for more system configurations, and updated time zone data.
Java SE 6 Update 21 also has security and compatibility issues such as being outdated, incompatible with some applications or websites, raising warning dialogs when mixing signed and unsigned code, and causing security exceptions when drag-and-dropping data.
To download and install Java SE 6 Update 21 on your computer, you need to check your current Java version and system requirements, download Java SE 6 Update 21 from a trusted source, run the installer and follow the instructions, and verify that Java SE 6 Update 21 is installed correctly.
To update and uninstall Java SE 6 Update 21 from your computer, you need to use the online or offline Java update or uninstall tools, and restart your computer or browser if required.
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