Topic: panel求助 |
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1.panel求助 | Copy to clipboard |
Posted by: SWandCC Posted on: 2006-04-15 14:57 //容器的嵌套 import java.awt.*; import java.applet.Applet; public static class PanelExample extends Applet { public void init() { Panel p=new Panel(); p.setBackground(Color.yellow); p.add(new Label("hello")); MyPanel mp=new MyPanel; mp.setBackground(Color.red); add(mp); } public class MyPanel extends Panel //这个方法是在tp里嵌套一个mpc吗? { Panel tp; public MyPanel(Panel mpc) { tp=mpc; //这里为什么要让tp=mpc? add(mpc); } } } 小弟刚学JAVA,希望大家能帮帮我,谢谢了 |
2.Re:panel求助 [Re: SWandCC] | Copy to clipboard |
Posted by: scwfeng Posted on: 2006-04-15 18:29 我也是初学者,我认为其目的是把mpc这个对象的指引传给tp |
3.Re:panel求助 [Re: SWandCC] | Copy to clipboard |
Posted by: JavaandC Posted on: 2006-04-16 09:26 Panel tp; 和 tp=mpc; 这两句代码是废话,可以不要。 |
4.Re:panel求助 [Re: SWandCC] | Copy to clipboard |
Posted by: SWandCC Posted on: 2006-04-16 20:51 感谢!我一直在想这两句有什么用.......为什么不能直接add(mpc),终于找到答案了啊,哈哈 |
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