J2EE Environment Setup

JDK 11

• Downloading and installing Java is easy and free. Download latest version of JDK from the Java website www.java.com and install it from an executable file.

• By default, JDK is installed in “C:\Program Files\Java\jdk11.x.xx” folder in the windows environment. This folder has subfolder .\bin that has javac.exe to compile a java program and java.exe to execute a java class.

• You can verify your java installation by executing the following command.

C:\>java –version

• If you get the following output text then congratulations your java has been successfully installed.

java version "11.x"

Troubleshooting

• If java –version command does not work then check environment variable PATH. It should contain java executable folder “C:\Program Files\Java\jdk11.x\bin”.

• If path does not contain JDK executable folder then edit PATH and append it by following command.

• SET PATH = %PATH%; C:\Program Files\Java\jdk11.x\bin

Set JAVA_HOME

Many JAVA Servers ( TOMCAT, JBoss ) and Java Tools use the JAVA_HOME environment variable to locate java.exe to execute class files. It is advisable for you to set JAVA_HOME environment variable to execute java based servers and tools.

JAVA_HOME contains the installation path of JAVA.

Set environment variable JAVA_HOME to installation path C:\Program Files\java\ jdk-11.x using following steps

1. Right Click on My Computer->Properties-> Advanced->Environment Variables ->User Variables -> New

2. Set JAVA_HOME to value C:\Program Files\java\ jdk-11.x

Set PATH

In order to run Java from a command prompt, you need to set JAVA_HOME\bin folder in PATH environment variable.

Use the following command at Command Prompt to set PATH.

Set PATH environment variable to %PATH%;%JAVA_HOME%\bin.

Or you can set it from the Environment Variable popup window.

See Video