JDK 1.6 Installation:
Step 1:
Download: jdk-6u7-linux-x64-rpm.bin from java.sun.com
Step 2:
Run the bin file from terminal. It will install java version "1.6.0_07".
Step 3:
Remove java from var/lib/alternatives
rm /var/lib/alternatives/java
Step 4:
Change to Root folder
cd /root
Now Java Version command will show the Java which is installed by default with CentOS
java -version
Result:
java version "1.4.2"
gij (GNU libgcj) version 4.1.2 20071124 (Red Hat 4.1.2-42)
Step 5:
Add both Java Version 1.4.2 and Java 1.6.0_07 entries using alternatives command
/usr/sbin/alternatives --install /usr/bin/java java /usr/lib/jvm/jre-1.4.2-gcj/bin/java 1
/usr/sbin/alternatives --install /usr/bin/java java /usr/java/jdk1.6.0_07/bin/java 2
Make jdk1.6.0 as default java version.
/usr/sbin/alternatives --config java
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