Table of Contents
Java is a computer programming language that is concurrent, class-based and object-oriented. It was originally developed by James Gosling at Sun Microsystems. Java applications are compiled to bytecode (class file) that can run on any Java virtual machine (JVM) regardless of computer architecture.
Java is currently owned by the Oracle Corporation which acquired Sun Microsystems in 2010. Following tutorial will show you how to setup and configure Java 1.7 on Windows so you can develop and run Java code.
JDK Download & Install #
Java can be obtained from the Oracle Java download page. There are a number of different Java packages available, for this tutorial we will be installing Java Standard Edition (SE) on Windows.
In order to be able to compile Java code, we need the Java Development Kit (JDK) package that comes with a Java compiler. The JDK package also comes with a Java runtime environment (JRE) that is needed to run compiled Java code.
As we are installing an older Java version, you need to scroll all the way down to the bottom of the Oracle Java download page and click on the
Download button in the
Java Archive section. Then look for the
Java SE 6 link and after clicking on it, select the correct operating system under
Java SE Development Kit 6u45.
Here is the direct link to download the jdk1.6.0_45 installer for Windows 32 or 64 bit.
Accept the License Agreement and pick the correct download for your operating system. In this example, we will use the Windows 64 bit version.
Sign in using your Oracle account (or create a new one) and the download should start. Once the download is complete, locate the
jdk-6u45-windows-x64.exe file and double-click to run the installer.
Next and on the following screen optionally change the installation location by clicking on the
Change... button. In the example below the install location was changed to
'C:\Java\jdk1.6.0_45'. From now on we will refer to this directory as:
Next, the installer will present the installation location of the public JRE. We will skip this part of the installer as the JDK installed in the previous step comes with a private JRE that can run developed code. Just press
Cancel and confirm by clicking
Yes in the popup window.
Next and then
Close to finish installing Java.
JDK Configuration #
In order for Java applications to be able to run we need to setup a
JAVA_HOME environment variable that will point to the Java installation directory. In addition, if we want to run Java commands from a command prompt we need to setup the
PATH environment variable to contain the Java bin directory.
When using Windows the above parameters can be configured on the Environment Variables panel. Click on the
Windows Start button and enter
env without quotes as shown below.
Environment variables can be set at account level or at system level. For this example click on
Edit environment variables for your account and following panel should appear.
Click on the
New button and enter
JAVA_HOME as variable name and the
[java_install_dir] as variable value. In this tutorial the installation directory is
OK to to save.
Click on the
New button and enter
PATH as variable name and
%JAVA_HOME%\bin as variable value. Click
OK to save.
Note that in case a
PATHvariable is already present you can add
;%JAVA_HOME%\binat the end of the variable value.
The result should be as shown below. Click
OK to close the environment variables panel.
In order to test the above configuration, open a command prompt by clicking on the Windows Start button and typing
cmd followed by pressing
ENTER. A new command prompt should open in which the following command can be entered to verify the installed Java version:
The result should be as shown below.
This concludes the setting up and configuring JDK 1.6 on Windows.
If you found this post helpful or have any questions or remarks, please leave a comment.