I just downloaded the Java SDK/JDK versions 5 and 6, and I just need the development tools (and some libraries) contained in the installation packages, I don\'t need to perform
You can extract both JDK 1.5 and 1.6 from .exe files, using the Universal Extractor (really a great tool). But don't forget to convert all *.pack files (compressed with Pack200 format) into corresponding *.jar files, in order to obtain a full working environment. You can use the unpack200.exe command provided in the JDK itself.