1 package cn.skyfffire; 2 3 /** 4 * 5 * @author skyfffire 6 * 7 * 按照权限顺序:public, protected, default, private来排序方法和属性, 可以使代码清晰度更高 8 * 9 */ 10 public class Standard { 11 private int width; 12 13 public int getWidth() { 14 return width; 15 } 16 public void setWidth(int _width) { 17 if (is(_width)) { 18 width = _width; 19 } 20 } 21 22 private boolean is(int _width) { 23 return (_width >= 20 && _width <= 300); 24 } 25 }