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An OPM is a method that projects a large eigenvalue problem on a smaller subspace . " Anyone who has been a journalist , anyone who has worked a beat , " has used the methods that is required to learn what you need to learn on the job to do writing . You cannot use any method that depends on the current state of the game - - for example , you ca n't say " whoever has the highest Attack card goes next " . The first is its init ( ) , which for those who've skipped the beginning lessons in applet creation , is the method that executes first ( and only once ) when the applet comes into being on your web page . The simple mechanism that makes this work is as follows : Every method that throws an exception must either also catch the exception , or indicate explicitly that its exception will continue up the call stack to the invoking method .