I've tried to install java 1.4 for an old program and download it from Oracle official web site. But the content directory structure of the tar.Z file are a bit messy, and I try to put it in Eclipse(via >Window>Preferences>Installed JRE> ) but it didn't work.
The directories inside jdk 1.4:
That was the folder structure from the download version and it's very diferent from the original one's. For example, in 'SUNWj3rt' there is a java exec in SUNJ3rt>reloc>j2se>bin folder, and another folder SUNJ3rt>reloc>j2se>jre>bin as well and the SDK apparently is in SUNWj3dev>reloc/j2se/bin (javac and others), but I tried in many ways to put it in Eclipse but didn't recognize via 'JRE_home' or via 'Extenal JARs' options. Anyone else knows how to deal with it or if there is another way to install jdk 1.4 instead of ORACLE website?
I suspect that you downloaded a tar containing a version of the JDK 1.4 for Solaris instead of Linux.
Note that if the old Java 1.4 distribution will run correctly in a much newer Linux distribution is up to you to test.