Java

Java

What is Java?
Installing Java
Checking the version of Java installed
Enabling Java in a Web Browser
Checking a Web Browser for Java

Installing Java

under Fedora Core 4 (Linux):

download jre-1_5_0_06-linux-i586-rpm.bin from the www
copy it to /usr/java/
# cd /usr/java
# chmod a+x jre-1_5_0_06-linux-i586-rpm.bin
# ./jre-1_5_0_06-linux-i586-rpm.bin
Java is installed into /usr/java/jre1.5.0_06/
#

Find the /plugins directory in the directory tree where Firefox is installed
# cd /usr/lib/firefox-1.0.4/plugins
Create a link to the java plugin file
# ls -s /usr/java/jre1.5.0_06/plugin/i386/ns7/libjavaplugin_oji.so
#

under Solaris 10 (Unix):

# cd /usr/java/plugin/sparc/ns7
# pwd
/usr/jdk/instances/jre1.5.0_04/plugin/sparc/ns7
#
# cd /usr/sfw/mozilla/plugins
# ls -la
l libjavaplugin_oji.so -> /usr/jdk/instances/jre1.5.0_04/plugin/sparc/ns7/libjavaplugin_oji.so
#

installing JRE on Sun Solaris
$ su root
# cd /usr
# sh j2re-1_4_2_05-solaris-sparc.sh
# ln -s ./j2re1.4.2_05 java
testing
# java -version

Checking the version of Java installed

under Fedora Core 4 (Linux):

# java -version
java version "1.4.2"
gij (GNU libgcj) version 4.0.0 20050519 (Red Hat 4.0.0-8)

Copyright (C) 2005 Free Software Foundation, Inc.
This is free software.....
warranty...
#

or

# java -fullversion
java full version "gcj-1.4.2"
#

under Sun Solaris 10 (Unix):

# java -version
java version "1.5.0_04"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_04-b05)
Java HotSpot(TM) Client VM (build 1.5.0_04=b05, mixed mode, sharing)
#

or

# java -fullversion
java full version "1.5.0_04-b05"
#

under Microsoft Windows Server 2003:

Checking a Web Browser for Java

using the FireFox browser:

1. launch FireFox
2. in address bar, type about:plugins
3. press the <Enter> key, or click <Go>

External web sites with Java version tests:
http://javatester.org/version.html
http://www.cyscape.com/showbrow.asp

a