J2SE 1.4.2_02 is supporting RHL7.3, described in the following URL.

http://java.sun.com/j2se/1.4.2/system-configurations.html

JPI library 'libjavaplugin_oji.so' for Mozilla, Netscape7 or higher
requires libgcc_s.so.1 but RHL7.3 does not have libgcc_s.so.1.
So the following error occurs when running the browser.

# LoadPlugin: failed to initialize shared library /root/j2sdk1.4.2_02/jre/plugin/i386/ns610-gcc32/libjavaplugin_oji.so [libgcc_s.so.1: cannot open shared object file: No such file or directory]
bash: LoadPlugin:: command not found
#

Usually, libgcc_s.so.1 is packed into libgcc-<version>.i386.rpm and
installed under /lib directory, but it seems that the shared lib
is not included in RHL7.3 install media.

FYI:
     version exist rpm-package name supported on J2SE
     --------+-------+-------------------------+-------------------
     RHL7.2 yes libgcc-3.0.1-3.i386.rpm no?
     RHL7.3 no n/a yes
     RHL8.0 yes libgcc-3.2-7.i386.rpm yes
     RHL9 yes libgcc-3.2.2-5.i386.rpm no?