以下程序的输出结果为 ( ) 。 class A{ private int privateVar; A(int _privateVar){ privateVar=_privateVar; } boolean isEqualTo(A anotherA){ if(this.privateVar == anotherA.privateVar) return true; else return false; } } public class B{ public static void main(String args[]){ A a = new A(1); A b = new A(2); System.out.println(a.isEqualTo(b)); } }