public class B { static int a=100; class C { int a=52; void print_out() { System.out.print
public class B { static int a=100; class C { int a=52; void print_out() { System.out.println("a="+a); System.out.println("B.a="+B.a); System.out.println("this.a="+this.a); } } public static void main(String args[]) { B.C c=new B().new C(); c.print_out(); } } 执行结果是: