修改/更新 Linux下原有的JDK/JRE
从官网下载的JDK是1.7x的。不过我的fedora15里默认安装的JRE是1.6x。结果导致使用JDK1.7x编译的class文件在JRE1.6x上无法解释。具体原因没有去考证。所以简单的解决这个问题，将JRE也更新到JRE1.7x。
其实JDK中也包含解释环境，所以没有必要再下载一个JRE，直接用JDK自带得java解释器就好。
于是乎，改/etc/profile啊之类的，加JAVA_HOME等都没有解决问题～
得，来个狠的。直接用自己安转的代替原有的。
# cd /usr/bin
# ln -s -f /opt/jdk1.7.0_03/bin/java
# ln -s -f /opt/jdk1.7.0_03/bin/javac
java -version确认一下～OK
技术还真是不碰就忘得一干二净……
2012年2月27日 01:35
其实Fedora不是打包了1.7的OpenJDK了么？。。。
sudo yum install java-1.7.0-openjdk
2012年2月27日 15:26
@Mike: 恩～不过还是喜欢瞎折腾，不喜欢用openJDK
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