linux:jdk的安装

1.      下载linux版本的jdk；本例子是：jdk1.7.0_80

2.      在/usr/local/目录下新建名字为java的文件夹；

Mkdir –p java

3.将jdk安装包复制到/usr/local/java目录下：



4.解压此安装包：

 Tar –zxvf jdk-7u80-linux-x64.tar.gz

5.删除此安装包

  Rm –rf   jdk-7u80-linux-x64.tar.gz

6.配置环境变量:vim /etc/profile

export JAVA_HOME=/usr/local/java/jdk1.7.0_80

export JRE_HOME=/usr/local/java/jdk1.7.0_80/jre

export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar:$JRE_HONE/lib/:$CLASSPATH

export PATH=$JAVA_HOME/bin/:$PATH

7.使之生效

 Source /etc/profile

7.查看jdk是否安装成功

 [root@ljf-centossoftpackage0324]# java -version

java version "1.7.0_80"

Java(TM) SE Runtime Environment (build 1.7.0_80-b15)

Java HotSpot(TM) 64-Bit Server VM (build 24.80-b11, mixed mode)

[root@ljf-centos softpackage0324]#

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