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Method <type> <name> requires a method body. Otherwise declare it abstract.

If you want there to be a method body, and there is, your problem will be a rogue semicolon:

public int doSomething(int whatWith); Remove this semicolon
return whatWith*3;
NOTE: The Java section is mostly in maintenence mode. I don't have time to work on it right now. Errors will be corrected if pointed out, but they are not actively being searched for. Newer site features, like alternate stylesheets, may cause problems with these pages.