understand java object/how to creat them

understand java object/how to creat them

1. attributes(fields) and actions(methods)

2. blueprints to creat java object: classes

   • classes are blueprints to creat same type of object
   • 1.name of classes
     • 2.list of fields
       • 3.list of methods
         • methods define actions that the object could do
         • has declaration part and a body
           • return value,the method name and a list of arguments
           • the code that perform the action
       • fields are the varibles of the object
   • constructor method

3. new keyword