如何安装 JAVA 7 (JDK 7u75) 在 CentOS/RHEL 7/6/5 Fedora
2015-03-07 01:00
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先下载JDK
重开一下终端 env|grep HOME 就可以看见结果了
For 64 Bit:-
# cd /opt/ # wget --no-cookies --no-check-certificate --header "Cookie: gpw_e24=http%3A%2F%2Fwww.oracle.com%2F; oraclelicense=accept-securebackup-cookie" "http://download.oracle.com/otn-pub/java/jdk/7u75-b13/jdk-7u75-linux-x64.tar.gz"
For 32 Bit:-
# cd /opt/ # wget --no-cookies --no-check-certificate --header "Cookie: gpw_e24=http%3A%2F%2Fwww.oracle.com%2F; oraclelicense=accept-securebackup-cookie" "http://download.oracle.com/otn-pub/java/jdk/7u75-b13/jdk-7u75-linux-i586.tar.gz" 解压缩并移动到/opt下
# tar xzf jdk-7u75-linux-x64.tar.gz # mv jdk1.7.0_75 /opt 设置为默认虚拟机
# cd /opt/jdk1.7.0_75/ # alternatives --install /usr/bin/java java /opt/jdk1.7.0_75/bin/java 2 # alternatives --config java
出现以下选项时选择4 There are 4 programs which provide 'java'. Selection Command ----------------------------------------------- * 1 /usr/lib/jvm/jre-1.6.0-openjdk/bin/java + 2 /opt/jdk1.7.0_60/bin/java 3 /opt/jdk1.7.0_72/bin/java 4 /opt/jdk1.7.0_75/bin/java Enter to keep the current selection[+], or type selection number: 4 [Press Enter]
# alternatives --install /usr/bin/jar jar /opt/jdk1.7.0_75/bin/jar 2 # alternatives --install /usr/bin/javac javac /opt/jdk1.7.0_75/bin/javac 2 # alternatives --set jar /opt/jdk1.7.0_75/bin/jar # alternatives --set javac /opt/jdk1.7.0_75/bin/javac 现在可以试一下java的版本了,输出如下
# java -version java version "1.7.0_75" Java(TM) SE Runtime Environment (build 1.7.0_75-b13) Java HotSpot(TM) 64-Bit Server VM (build 24.75-b04, mixed mode) 设置一下环境变量
cat >> /etc/profile.d/java7.sh << EOF export JAVA_HOME=/opt/jdk1.7.0_75 export JRE_HOME=/opt/jdk1.7.0_75/jre export PATH=\$PATH:/opt/jdk1.7.0_75/bin:/opt/jdk1.7.0_75/jre/bin EOF
重开一下终端 env|grep HOME 就可以看见结果了
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