java PPT 详细
Computerprograms,knownassoftware,areinstructionstothecomputer.Youtellacomputerwhattodothroughprograms.Withoutprograms,acomputerisanemptymachine.Computersdonotunderstandhumanlanguages,soyouneedtousecomputerlanguagestocommunicatewiththem.Programsarewrittenusingprogramminglanguages
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