java basics @ mlab, 15-19 Nov 1999, juhuu@katastro.fi



 programming languages? 
 




 
  java / javascript ?










 
  human                                                      processor (cpu)
                              
  source code                >>>>                   assembly language / machine language
                                     compile











	scripting 			 compiling


        perl    director                        	               c           c++       	   
					
         tcl      basic		         	   Pascal           	Visual Basic
		
					Delphi

	



			     java





  java source                                               java bytecode

  .java                                >>>>                 .class




                                                            java virtual machine (Java VM)
 
                                                            virtual processor, same program runs on all platforms