change Java on Ubuntu Kylin 15.04

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1. remove OpenJDK

apt-get purge openjdk*

2. remove jayatana

ubuntu 15.04 Picked up JAVA_TOOL_OPTIONS: -javaagent:/usr/share/java/jayatanaag.jar 问题解决

sudo apt-get remove jayatana

unset JAVA_TOOL_OPTIONS

http://www.linuxdiyf.com/linux/12253.html

3. install sun JDK

a. download the latest JDK 6 from http://www.oracle.com/technetwork/java/javase/downloads/jd

k6downloads-1902814.html
b. decompress downloaded bin file
$./jdk-6u <version>-linux-x64.bin
c. move it to a proper directory,for example :/usr/lib/jvm/
d. install alternative options:(update-alternative --install <link> <name> <path> <priority>)
sudo update-alternatives --install /usr/bin/jar jar /usr/lib/jvm/jdk1.6.0_<version>/bin/jar 60
sudo update-alternatives --install /usr/bin/java java /usr/lib/jvm/jdk1.6.0_<version>/bin/java 60
sudo update-alternatives --install /usr/bin/javac javac /usr/lib/jvm/jdk1.6.0_<version>/bin/javac
60
sudo update-alternatives --install /usr/bin/javap javap /usr/lib/jvm/jdk1.6.0_<version>/bin/javap
60
sudo update-alternatives --install /usr/bin/javadoc javadoc /usr/lib/jvm/jdk1.6.0_<version>/bin/j
avadoc 60
e. select jdk by hand
sudo update-alternatives --config jar
sudo update-alternatives --config java
sudo update-alternatives --config javac
sudo update-alternatives --config javap
sudo update-alternatives --config javadoc

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