actually installed ISC 6.0.1.1 ; AC 5.4 ; TSM 5.4.1 ; Java 1.4.2 64bit found in AC 5.5 Release notes :
Java Runtime Environment required version To install the Integrated Solutions Console Version 6.0.1.1 and the Administration Center Version 5.5, you must have the 32-bit version of IBM or Sun Java version 1.4.2 or higher installed on your system. Do not use a 64-bit Java Runtime Environment. The directory where the Java executable files are installed must be included in your PATH environment variable.