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
tar xf jdk-7u7-linux-x64.tar.bz2
chown -R root.root /opt/java
chmod ugo+rx -R /opt/java

sudo update-alternatives --install /usr/bin/java java /opt/java/jdk1.7.0_17/bin/java 200 --slave /usr/bin/javac javac /opt/java/jdk1.7.0_17/bin/javac --slave /usr/bin/jstack jstack /opt/java/jdk1.7.0_17/bin/jstack --slave /usr/bin/jps jps /opt/java/jdk1.7.0_17/bin/jps --slave /usr/bin/jmap jmap /opt/java/jdk1.7.0_17/bin/jmap --slave /usr/bin/jstat jstat /opt/java/jdk1.7.0_17/bin/jstat

验证一下安装结果:

update-alternatives --config java
java -version

作者：翁志艺