java Boolean 比较
Boolean a= new Boolean(true); Boolean b= new Boolean(true); boolean c= true; Boolean d= true; Boolean e= true; System.out.println(a==b); System.out.println(a==c); System.out.println(a==d); System.out.println(c==d); System.out.println(d==e);
java boolean 的封装类型Boolean实例化后,在比较时,比较的是对象