The required JDK for this installation is version : 1.6.0 The JDK currently you are running with version:1.4.2

Whenever we install operating system default java is installed with it.

[fusion@wlsadmin jdk1.7.0_45]$ which java
/usr/bin/java
[fusion@wlsadmin jdk1.7.0_45]$ /usr/bin/java -version
java version "1.4.2"
gij (GNU libgcj) version 4.1.2 20080704 (Red Hat 4.1.2-48)

Copyright (C) 2006 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
[fusion@wlsadmin jdk1.7.0_45]$ export JAVA_HOME=/u01/jdk1.7.0_45
[fusion@wlsadmin jdk1.7.0_45]$ export PATH=$JAVA_HOME/bin:$PATH
[fusion@wlsadmin jdk1.7.0_45]$ which java
/u01/jdk1.7.0_45/bin/java
[fusion@wlsadmin jdk1.7.0_45]$

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Now start weblogic server  installation.
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Demonstration With Screenshot
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