JDK version switching under Linux

Installation in the ubuntu10.10 system, the development environment needs, sometimes need to install JDK5 and JDK6, how to achieve the switch between the two? Use the Update-alternativs command to complete this task

Specific as follows:

1. Check to see if the JDK is in the Ubuntu JDK menu:

Java code

1. Update-alternatives--config Java
2. Update-alternatives--config Javac

2. If not in the menu can be added as follows:

Java code

1. Update-alternatives--install/usr/bin/java Java/usr/lib/jvm/java/jdk1. 6.0_12/bin/java
2. Update-alternatives--install/usr/bin/javac Javac/usr/lib/jvm/java/jdk1. 6.0_12/bin/javac

Note: Different versions of Jdk1.6.0_12 are subject to change

3.sudo Update-alternatives--config Java

Java code

1. sudo update-alternatives--config javac

Select serial number, enter can;
4. Then java-version,javac-version view the current JDK version

JDK version switching under Linux