With Mac OS 10.7 (Lion) and later, the Java runtime is no longer installed automatically as part of the OS installation. Follow any of the methods below to install Java runtime.

The Java Development Kit (JDK) 7 – also known as Java SE 7 Update 1 had been released on 18 October last month. The new release comes with some enhancements and bug fixes. You can find the release notes at the website.

This article shows you on how to install Java SE 7 (JDK 1.7) on Microsoft Windows 7 Ultimate64-bit architecture.

Here is the step by step:

Go to Java SE Downloads page.

Select the JDK Download. Note that you must have a copy of the JRE (Java Runtime Environment) on your system to run Java applications and applets. To develop Java applications and applets, you need the JDK (Java Development Kit), which includes the JRE.

Accept the License Agreement by clicking the radio button of it.

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Select the ‘Windows x64‘ file which the file name is ‘jdk-7u1-windows-x64.exe‘ with the file size is about 80.24 MB.

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Once you download the file, run it and follow the onscreen instructions.

If you successfully install it, check that the JDK 1.7 was in your system by issuing ‘java -version’ in the command prompt. The result should be similar like below:

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Viola. The Java SE 7 has been successfully installed in the system.