November 21, 2009
http://www.java.com/download/help/5000011800.xml

Was my version of Java installed with RPM?

This article applies to:
  • Platform(s): Sun Java Desktop System ,  Red Hat Linux ,  SUSE Linux
  • Browser(s): Netscape 6.2x ,  Netscape 7 ,  Mozilla 1.4+
  • Java version(s): All JRE Versions
If a version of Java Runtime Enviornment(JRE) is installed on the system, but is not listed by the RPM query, then it is not an RPM installation. The RPM database can be queried to determine what packages have been installed. This command will try to locate any JRE on the system.
  1. Open new Terminal Window
  2. Type following command: rpm -qf /usr/java/jre1.5.0
    (This command is used to find the installation of JRE 1.5.0. Change the version number if you want to find other versions)
 This command will try to locate any Java Development KIT (JDK) and JRE on the system.
  1. Open new Terminal Window
  2. Type: rpm -q jdk jre
 This command will give the directory name of any JRE installation on the system.
  1. Open new Terminal Window
  2. Type: rpm -q --list jre | grep "bin/java"