Eclipse not starting in RHEL4

[Ashik Uzzaman]

I am using Redhat Linux Enterprise 4 that has Java version 1.4.2 installed. I downloaded the eclipse-java-galileo-SR1-linux-gtk.tar.gz file from Eclipse site and decompressed and put it into /us/local/eclipse location. But when I try to run it using ./eclipse & I see it gives me the error below. Any idea why and how I can resolve any library dependency issue that may be here?

[ashikuzzaman@auzzaman-lnx eclipse]$ Warning: -XX:MaxPermSize=256m not understood. Ignoring.
Warning: -Xms40m not understood. Ignoring.
Warning: -Xmx256m not understood. Ignoring.
Warning: -jar not understood. Ignoring.
Exception in thread "main" java.lang.NoClassDefFoundError: .usr.local.eclipse.plugins.org.eclipse.equinox.launcher_1.0.201.R35x_v20090715.jar
   at gnu.gcj.runtime.FirstThread.run() (/usr/lib/libgcj.so.5.0.0)
   at _Jv_ThreadRun(java.lang.Thread) (/usr/lib/libgcj.so.5.0.0)
   at _Jv_RunMain(java.lang.Class, byte const, int, byte const, boolean) (/usr/lib/libgcj.so.5.0.0)
   at __gcj_personality_v0 (/usr/local/eclipse/java.version=1.4.2)
   at __libc_start_main (/lib/tls/libc-2.3.4.so)
   at _Jv_RegisterClasses (/usr/local/eclipse/java.version=1.4.2)

[Freddy Wong]

It seems that you're using GCJ and not Sun JDK. To use Eclipse Galileo, it's recommended to use JDK 5 above.