Lrwxrwxrwx 1 root root 27 Aug 26 20:05 /usr/bin/javac -> /usr/java/default/bin/javac Lrwxrwxrwx 1 root root 26 Aug 26 20:05 /usr/bin/java -> /usr/java/default/bin/java Lrwxrwxrwx 1 root root 4 Sep 2 10:55 latest -> jdk7 As a working example, here is my installation (note that for my purposes I needed both the 64-bit AND 32-bit versions of both the Java 7 AND Java 6 JDKs, so there's a lot): # ls -al /usr/java/ĭrwxr-xr-x 6 root root 4096 Sep 2 11:02. Obviously, you'll have to fill in some blanks here, but you should get the picture.
# ln -s /usr/java/default/bin/javaws /usr/bin/javaws. # ln -s /usr/java/default/bin/javadoc /usr/bin/javadoc. # ln -s /usr/java/default/bin/javah /usr/bin/javah. # ln -s /usr/java/default/bin/javac /usr/bin/javac. # ln -s /usr/java/default/bin/java /usr/bin/java. # ln -s /usr/java/latest /usr/java/default. # ln -s /usr/java/jdkx /usr/java/latest. # ln -s /usr/java/jdkx.x.x_xx /usr/java/jdkx. # mv jdkx.x.x_xx /usr/java (or, if JRE, this will be the extracted JRE directory). 
# tar -xzvf jdk-xxx-linux-圆4.tar.gz (or whichever one you downloaded). Perform the following as root or using sudo:. 
For the JDK, get jdk-xxx-linux-圆4.tar.gz if you have a 64-bit machine or if 32-bit. For the JRE, get jre-xxx-linux-圆4.tar.gz if you have a 64-bit machine or if 32-bit. How to install openjdk 7 on linux download#
Download JRE 7 (or JDK 7 if you want to develop) from. They are more trouble than they're worth, and always way behind the latest updates. Ignore (and uninstall) any JREs or JDKs bundled with / shipped with your distribution. I recently had to install Java 7 on CentOS, openSUSE and Ubuntu, and after much fretting and research, finally settled on this, which works on all three flavors:
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