class2.java

针对越来越多的用户喜欢JAVA

public class Class2
 {
 public static void main(String[] args)
{
  A a1 = new A();     a1.printa();
  B b1 = new B();     b1.printb();     b1.printa();    
  }
}
class A
{
  int x = 1;
  void printa(){System.out.println(x);}
}
class B extends A
{
   int x=100;
   void printb(){
   super.x = super.x +10 ;
   System.out.println("super.x= " + super.x + "  x= " + x);
 }
}