安装JDK解压版方便些。
注意Linux32和JDK32，Linux64和JDK64 对应。
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linux下如何查看JDK的安装路径
which java
/usr/bin/java
ls -lrt /usr/bin/java
lrwxrwxrwx. 1 root root 22 Aug 17 15:12 /usr/bin/java -> /etc/alternatives/java
ls -lrt /etc/alternatives/java
lrwxrwxrwx. 1 root root 46 Aug 17 15:12 /etc/alternatives/java -> /usr/lib/jvm/jre-1.7.0-openjdk.x86_64/bin/java
cd /usr/lib/jvm
配置java的环境变量
export JAVA_HOME=/usr/lib/jvm/java-1.7.0-openjdk.x86_64
export CLASSPATH=.:$JAVA_HOME/jre/lib/rt.jar:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
export PATH=$PATH:$JAVA_HOME/bin
使环境变量生效
source /etc/profile
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作者：AKUK
来源：CSDN
原文：https://blog.csdn.net/aa635335061/article/details/54313600?utm_source=copy
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