Changing Java Version for a Specific Program

Question

If I have more than one version of Java installed can I specify the version I want to kick a program off with via batch file, or do I have to change my environment variable? If

Answer 1

If your batch file executes the Java program as:

java  com.stackexchange.MyProgram  argument1 argument2 etc

You can change it to execute it using a specific Java installation as:

"C:\Program Files\Java\jdk1.6.0_20\bin\java.exe"  com.stackexchange.MyProgram  argument1 argument2 etc

Or you can declare a variable and use it (this is useful if you have a master batch file that sets up the environment for your mini batch files):

:: In master batch ::
SET JAVA_HOME=C:\Program Files\Java\jdk1.6.0_20\bin

:: In mini batch ::
"%JAVA_HOME%\java.exe"  com.stackexchange.MyProgram  argument1 argument2 etc