liunx下jdk1.7降级到jdk1.6
相信大家平时对安装软件只有升级很少有降级的吧,我今天就遇到公司要求把本来安装好的jdk1.7降级成1.6....
系统:centos 5.5
需要的软件包:jdk-7u3-linux-i586.rpm jdk-6u32-linux-i586.bin
1.下载jdk
wget http://download.slogra.com/java/jdk-6u32-linux-i586.bin
wget http://download.slogra.com/java/jdk-7u3-linux-i586.rpm
2.安装jdk1.7
当然这步是为了模拟服务器先安装了jdk1.7才做的,如果要直接安装jdk1.6,可以去看这篇文章centos安装jdk1.6
rpm -ivh jdk-7u3-linux-i586.rpm
![点击查看原图](/content/plugins/kl_album/upload/201208/9c15d4b3de3fc9c7555eeb10f189d43e201208311727481063780462.jpg)
然后进行验证
java -version
![点击查看原图](/content/plugins/kl_album/upload/201208/b11e810843bd0a7de52c419a8695a34c20120831172724640725217.jpg)
可以看到已经是java1.7的了.
3.把java1.7降级为java1.6
chmod +x jdk-6u32-linux-i586.bin
./jdk-6u32-linux-i586.bin
![点击查看原图](/content/plugins/kl_album/upload/201208/64906e6ff7d4990c64d113cec0344bfb20120831172735740273693.jpg)
mv jdk1.6.0_32/ /usr/java/
cd /usr/java/
rm -fr latest
![点击查看原图](/content/plugins/kl_album/upload/201208/062669db401202898e98433b76bcb43b20120831172739622380665.jpg)
ln -s jdk1.6.0_32/ latest
![点击查看原图](/content/plugins/kl_album/upload/201208/111b94836e23d110711c101bb255c9f42012083117274458094295.jpg)
vi /etc/profile
source /etc/profile
java -version
![点击查看原图](/content/plugins/kl_album/upload/201206/61b5c34a5b00a79b2417e31b6622992f2012060417374639270940.jpg)
可以看到jdk的版本是1.6了,降级成功.
系统:centos 5.5
需要的软件包:jdk-7u3-linux-i586.rpm jdk-6u32-linux-i586.bin
1.下载jdk
wget http://download.slogra.com/java/jdk-6u32-linux-i586.bin
wget http://download.slogra.com/java/jdk-7u3-linux-i586.rpm
2.安装jdk1.7
当然这步是为了模拟服务器先安装了jdk1.7才做的,如果要直接安装jdk1.6,可以去看这篇文章centos安装jdk1.6
rpm -ivh jdk-7u3-linux-i586.rpm
![点击查看原图](/content/plugins/kl_album/upload/201208/9c15d4b3de3fc9c7555eeb10f189d43e201208311727481063780462.jpg)
然后进行验证
java -version
![点击查看原图](/content/plugins/kl_album/upload/201208/b11e810843bd0a7de52c419a8695a34c20120831172724640725217.jpg)
可以看到已经是java1.7的了.
3.把java1.7降级为java1.6
chmod +x jdk-6u32-linux-i586.bin
./jdk-6u32-linux-i586.bin
![点击查看原图](/content/plugins/kl_album/upload/201208/64906e6ff7d4990c64d113cec0344bfb20120831172735740273693.jpg)
mv jdk1.6.0_32/ /usr/java/
cd /usr/java/
rm -fr latest
![点击查看原图](/content/plugins/kl_album/upload/201208/062669db401202898e98433b76bcb43b20120831172739622380665.jpg)
ln -s jdk1.6.0_32/ latest
![点击查看原图](/content/plugins/kl_album/upload/201208/111b94836e23d110711c101bb255c9f42012083117274458094295.jpg)
vi /etc/profile
export JAVA_HOME=/usr/java/default export CLASSPATH=.:$JAVA_HOME/jre/lib/rt.jar:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar export PATH=$PATH:$JAVA_HOME/bin
source /etc/profile
java -version
![点击查看原图](/content/plugins/kl_album/upload/201206/61b5c34a5b00a79b2417e31b6622992f2012060417374639270940.jpg)
可以看到jdk的版本是1.6了,降级成功.
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