在Debian和Ubuntu上安装官方64位Java

首先去Oracle下载最新的版本

mkdir-p/opt/java/64

cd/opt/java/64

tarxfjdk-7u7-linux-x64.tar.bz2

chown-Rroot.root/opt/java

chmodugo+rx-R/opt/java

sudoupdate-alternatives--install/usr/bin/javajava/opt/java/jdk1.7.0_17/bin/java200--slave/usr/bin/javacjavac/opt/java/jdk1.7.0_17/bin/javac--slave/usr/bin/jstackjstack/opt/java/jdk1.7.0_17/bin/jstack--slave/usr/bin/jpsjps/opt/java/jdk1.7.0_17/bin/jps--slave/usr/bin/jmapjmap/opt/java/jdk1.7.0_17/bin/jmap--slave/usr/bin/jstatjstat/opt/java/jdk1.7.0_17/bin/jstat

验证一下安装结果:

update-alternatives--configjava

java-version

作者：翁志艺