Java开发网 - 求助！！Java GUI问题：在按下Button后，如何调用TextField中的值？

Topic: 求助！！Java GUI问题：在按下Button后，如何调用TextField中的值？

1.求助！！Java GUI问题：在按下Button后，如何调用TextField中的值？

Posted by: hyzou
Posted on: 2007-05-15 11:47

希望能在按下Button后，调用TextField中的值，并修改Button上显示的名字，但不知如何处理。

程序如下：

import java.awt.*;

public class myButtons {

public static void main(String[] args) {
Frame f=new Frame("SoftPhone");
f.setLayout(new FlowLayout());
TextField tf1=new TextField("Tserver IP",30);
TextField tf2=new TextField("Tserver Port",20);
TextField tf3=new TextField("PlaceID",20);
TextField tf4=new TextField("AgentID",20);
TextField tf5=new TextField("PhoneNumber",20);
ConnectButton button0=new ConnectButton("Connect");
Button button1=new Button("Login");
Button button2=new Button("Ready");
Button button3=new Button("Make call");
Button button4=new Button("Release call");
MyButton button5=new MyButton("sub test");

f.add(tf1);
f.add(tf2);
f.add(button0);
f.add(tf3);
f.add(tf4);
f.add(button1);
f.add(button2);
f.add(tf5);
f.add(button3);
f.add(button4);
f.add(button5);
f.setSize(550,150);
f.setVisible(true);
}
}

class ConnectButton extends Button{

ConnectButton(String lable){
super(lable);
}
public boolean action(Event e,Object arg){
//String s=tf1.getText;
System.out.println("Pressed ConnectButton: "+arg);
System.out.println("Event: "+e);
return true;
}
}

class MyButton extends Button{

MyButton(String lable){
super(lable);
}
public boolean action(Event e,Object arg){
System.out.println("Pressed Button: "+arg);
System.out.println("Event: "+e);;
return true;
}
}

2.Re:求助！！Java GUI问题：在按下Button后，如何调用TextField中的值？ [Re: hyzou]	Copy to clipboard
Posted by: hyzou Posted on: 2007-05-15 12:02 自己顶一个！

3.Re:求助！！Java GUI问题：在按下Button后，如何调用TextField中的值？ [Re: hyzou]	Copy to clipboard
Posted by: hyzou Posted on: 2007-05-15 12:33

4.Re:求助！！Java GUI问题：在按下Button后，如何调用TextField中的值？ [Re: hyzou]	Copy to clipboard
Posted by: kkkrnm Posted on: 2007-05-15 20:51 你得利用动作事件才能产生按下Button后的动作比如写个这样的方法 public void actionPerfomed(ActionEvent e) { .......//此处写你的方法 }

5.Re:求助！！Java GUI问题：在按下Button后，如何调用TextField中的值？ [Re: hyzou]

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Posted by: glqky
Posted on: 2007-05-28 00:28

改了一下您的程序，您看这个行不行

import java.awt.*;
import java.awt.event.*;

public class myButtons{

Frame f = null;
Button button0, button1, button2, button3, button4, button5;
TextField tf1, tf2, tf3, tf4, tf5;

public myButtons()
{
f=new Frame("SoftPhone");
f.setLayout(new FlowLayout());
tf1=new TextField("Tserver IP",30);
tf2=new TextField("Tserver Port",20);
tf3=new TextField("PlaceID",20);
tf4=new TextField("AgentID",20);
tf5=new TextField("PhoneNumber",20);

button0=new Button("Connect");
button1=new Button("Login");
button2=new Button("Ready");
button3=new Button("Make call");
button4=new Button("Release call");
button5=new Button("sub test");

button0.addActionListener(new ActionListener(){
    public void actionPerformed(ActionEvent ae){
    System.out.println("Tserver IP: "+ gettf1());
    button0.setLabel("conneted");
    }
});

f.add(tf1);
f.add(tf2);
f.add(button0);
f.add(tf3);
f.add(tf4);
f.add(button1);
f.add(button2);
f.add(tf5);
f.add(button3);
f.add(button4);
f.add(button5);

f.addWindowListener(new WindowAdapter(){
  public void windowClosing(WindowEvent e)
  { System.exit(0);}
});

f.setSize(550,150);
f.setVisible(true);
}

String gettf1()
{return tf1.getText();}

public static void main(String[] args)
{
myButtons obj = new myButtons();
}
}

6.Re:求助！！Java GUI问题：在按下Button后，如何调用TextField中的值？ [Re: hyzou]

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Posted by: 胡嘉惠
Posted on: 2007-06-26 10:32

import java.awt.*;
import java.awt.event.*;

public class myButtons{

Frame f = null;
Button button0, button1, button2, button3, button4, button5;
TextField tf1, tf2, tf3, tf4, tf5;

public myButtons()
{
f=new Frame("SoftPhone");
f.setLayout(new FlowLayout());
tf1=new TextField("Tserver IP",30);
tf2=new TextField("Tserver Port",20);
tf3=new TextField("PlaceID",20);
tf4=new TextField("AgentID",20);
tf5=new TextField("PhoneNumber",20);

button0=new Button("Connect");
button1=new Button("Login");
button2=new Button("Ready");
button3=new Button("Make call");
button4=new Button("Release call");
button5=new Button("sub test");

button0.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent ae){
System.out.println("Tserver IP: "+ gettf1());
button0.setLabel("conneted");
}
});

f.add(tf1);
f.add(tf2);
f.add(button0);
f.add(tf3);
f.add(tf4);
f.add(button1);
f.add(button2);
f.add(tf5);
f.add(button3);
f.add(button4);
f.add(button5);

f.addWindowListener(new WindowAdapter(){
public void windowClosing(WindowEvent e)
{ System.exit(0);}
});

f.setSize(550,150);
f.setVisible(true);
}

String gettf1()
{return tf1.getText();}

public static void main(String[] args)
{
myButtons obj = new myButtons();
}
}
编译错误.....