Topic: 关于一个awt程序问题 |
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1.关于一个awt程序问题 | Copy to clipboard |
Posted by: wanqiufeng Posted on: 2007-12-02 17:29 程序如下: import java.awt.*; import java.awt.event.*; class My extends Button implements ActionListener{ String name; TextField text; Container con; My(String s,Container con){ super; this.con=con; text=new TextField; text.addActionListener(this); this.addActionListener(this); con.add(text); con.add(this); } public void actionPerformed(ActionEvent e){ name=text.getText(); this.setLabel(name); con.validate(); } } class Win extends Frame{ My button; Win(){ setLayout(new FlowLayout()); button=new My("确定",this); setBounds(100,200,300,400); add(button);//为什么此处不加这句话也可以? setVisible(true); validate(); } } public class Example6{ public static void main(String df[]){ Win win=new Win(); } } 说明:我自己已经调试过了,程序中的win类中若不要:add(button);这句依然正确,这是为什么呀; 谢谢解答; |
2.Re:关于一个awt程序问题 [Re: wanqiufeng] | Copy to clipboard |
Posted by: kapianzhe Posted on: 2008-01-10 22:26 哪个button是由你的con.add(this)Add进去的 |
3.Re:关于一个awt程序问题 [Re: wanqiufeng] | Copy to clipboard |
Posted by: JiafanZhou Posted on: 2008-01-16 22:12 Should move your topic to GUI. |
4.Re:关于一个awt程序问题 [Re: wanqiufeng] | Copy to clipboard |
Posted by: wanqiufeng Posted on: 2008-01-20 19:53 多谢各位朋友的解答,由于粗心所以当初没发现错误,现在恍然大悟。真的很感谢。 |
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