Linux上更改机器JDK

1. Remove the old empty java environment(删除旧版本)
# rm -f /usr/bin/java
# rm -f /usr/bin/javac
# rm -f /etc/alternatives/java
# rm -f /etc/alternatives/javac

2.# cd /usr/bin
#   ln -s -f /usr/jdk5/jre/bin/java
#    ln -s -f /usr/jdk5/bin/javac

java -version 就可看到更换后的JDK版本

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转载自zhangch-fnst.iteye.com/blog/2238703