Posted on 04 Jun 2015
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下载并解压JDK
http://www.oracle.com/technetwork/cn/java/javase/downloads/index.html
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移动JDK
# mv jdk1.8.0_20 /usr/local
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设置JDK环境变量
# vi /etc/profile export JAVA_HOME=/usr/local/jdk1.8.0_20 export JRE_HOME=${JAVA_HOME}/jre export CLASSPATH=.:{$JAVA_HOME}/lib:{$JRE_HOME}/lib export PATH=${JAVA_HOME}/bin:$PATH # source /etc/profile # 立即生效
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设置默认
sudo update-alternatives --install /usr/bin/java java /usr/local/jdk1.8.0_20/bin/java 300 sudo update-alternatives --install /usr/bin/javac javac /usr/local/jdk1.8.0_20/bin/javac 300
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验证
sudo update-alternatives --display java # 查看信息默认的jdk信息