Linux下Java开发环境安装

Linux下JDK二进制安装

先下载对应得oracle_jdk版本,在下载得目录下执行以下命令

#!/bin/bash
jdkFileName=`ls -1 | grep jdk.*tar.gz | head -1`
if [ ! -f $jdkFileName ]; then
  echo "jdk is not exist,plz check!"
  exit 1
else
  echo "jdk file name is $jdkFileName"
fi
mkdir -p /opt/java
tar -xzvf $jdkFileName -C /opt/java
jdkTarDir=`ls -1 /opt/java/ | grep -w jdk1.8`

cat >> /etc/profile << EOF
export JAVA_HOME=/opt/java/$jdkTarDir
export JRE_HOME=\${JAVA_HOME}/jre
export CLASSPATH=.:\${JAVA_HOME}/lib:\${JRE_HOME}/lib
export PATH=\${JAVA_HOME}/bin:\$PATH
EOF

source /etc/profile
rm -f /usr/bin/java && ln -s /opt/java/$jdkTarDir/bin/java /usr/bin/java
java -version