Local Variables and Passed Parameters 

class MyClass {

     public int x;      // These are local variables 
     private int y;     // -- local to MyClass

     public int method1(int xx, int yy) {  // These are parameters passed to method1
        
          x = xx;
          y = yy;
          return (method2(x,y));    
       }

     private int method2(int xx,yy) {

         int z;            // z is local to method2
         z = xx+yy ;   
         return z;
     }
}