user-defined packages

[sasimca007]

Hello friends,
With what extension an user-defined package must be saved? and how to use that package in main program? and is there any rule that the package must saved in some path. Please help me my friends....

[r035198x]

Hello friends,
With what extension an user-defined package must be saved? and how to use that package in main program? and is there any rule that the package must saved in some path. Please help me my friends....

Jar files is what you are looking for. Google for Sun's Jar tutorial and read it.