All entries for Friday 12 April 2013

Chrome Java plugin

On my ubuntu box, there are two versions of JDK installed: OpenJDK and Sun JDK.

The latest version OpenJDK I can get now is openjdk-7-jdk.

root> java -version
java version "1.7.0_15" 
OpenJDK Runtime Environment (IcedTea7 2.3.7) (7u15-2.3.7-0ubuntu1~12.04.1)
OpenJDK 64-Bit Server VM (build 23.7-b01, mixed mode)

With OpenJDK, you can install package “icedtea-7-plugin” to install the java plugin for Chrome. You can go “http://www.java.com/” and click “Do I have Java” to verify the Java version. The verification page display a blank page even after I accepted the security warning. However, I can succesfully verify in http://javatester.org/enabled.html
Somehow, the IcedTea crashed often.

I downloaded the binary version of Sun JDK and installed the software by unzip the binaries:

root>  java -version
java version "1.7.0_17" 
Java(TM) SE Runtime Environment (build 1.7.0_17-b02)
Java HotSpot(TM) 64-Bit Server VM (build 23.7-b01, mixed mode)

To make Chrome use the jre plugins:

cd ~/.mozilla/plugins
 ln -s /apps/jdk1.7.0_17/jre/lib/amd64/libnpjp2.so

Go “http://www.java.com/” and click “Do I have Java” to verify the java successfully.

Type “chrome://plugins” in the address bar, you can see both “IcedTea-Web Plugin” and “Java™ – Version: 1.7.0_17” are enabled. The latter takes precedence.

You can also use http://www.java.com/en/download/testjava.jsp to test the Java plugin.

In the end, I chose to use OpenJDK + IcedTea. Don’t want to manually download and install Sun JDK every time I need to upgrade.

Hongfeng Sun : 12 Apr 2013 13:41 |  Tags: Java |  Comments (0) |  Close comments |  Report a problem