I have a Java jar file that when i click on it in Win XP , it run without any problem . Recently i installed winrar program and it associated .jar extension with itself . I know how to change this association in WinXP but i don't know what executable file of JRE should obtain this association . There are some executables in JRE and JDK and i don't know which of them should obtain this association for executing JARs . Please tell me .