abstract class base { public int age=getNumber(100); static { System.out.println("base static block"); } { System.out.println("base nonstatic block"); } static int sage=getNumber(50); base() { System.out.println(age); System.out.println("base start"); draw();//会调用子类覆盖后的方法 System.out.println("base end"); } static int getNumber(int base) { System.out.println("base.getNumber int"+base); return base; } public void draw() { System.out.println("base.draw"); } } public class initializeOrder extends base{ public int age=getNumber(1001); private int _radius=getNumber(10); static int sage=getNumber(250); static { System.out.println("subclass static block"); } { System.out.println("subclass nonstatic block"); } initializeOrder(int radius) { _radius=radius; System.out.println(age); System.out.println("initializeOrder initialized"); } public void draw() { System.out.println("initializeOrder.draw "+_radius); } /** *//** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub new initializeOrder(1000); } }
运行结果:
C:\java>java initializeOrder
base static block
base.getNumber int50
base.getNumber int250
subclass static block
base.getNumber int100
base nonstatic block
100
base start
initializeOrder.draw 0
base end
base.getNumber int1001
base.getNumber int10
subclass nonstatic block
1001
initializeOrder initialized
C:\java>
总结:</td> </tr> <tr> <td height="20" colspan="2">
↑返回目录
前一篇: 审查Java代码的十一种常见错误
后一篇: 简单的计算器源码