package chapter3.item8;

/**
 * Copyright [2017$] [Wuxinshui]
 * <p>
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * <p>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p>
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/**
 * Created by wuxinshui on 2017/2/13.
 */
public class Point {
	private final int x;
	private final int y;

	public Point(int x, int y) {
		this.x = x;
		this.y = y;
	}

	@Override
	public boolean equals(Object obj) {
//		if (!(obj instanceof Point)) {
//			return false;
//		}
		//getClass测试代替instanceof 测试
		//只有当对象有相同的实现时，才能使对象等同
		if (obj==null || this.getClass()!=obj.getClass()) return false;
		Point p = (Point) obj;
		return p.x == x && p.y == y;
	}
}

@@ -848,18 +848,16 @@
  obj) %7B%0A
-//
 %09%09if (!(
@@ -881,18 +881,16 @@
 int)) %7B%0A
-//
 %09%09%09retur
@@ -898,18 +898,16 @@
  false;%0A
-//
 %09%09%7D%0A%09%09//
@@ -959,16 +959,18 @@
 %E4%BD%BF%E5%AF%B9%E8%B1%A1%E7%AD%89%E5%90%8C%0A%09%09
+//
 if (obj=

//if (obj==null || this.getClass()!=obj.getClass()) return false;