java题：就是点击发送按钮就把信息从单行文本框发送到多行文本框，然后再清除单行文本框的信息，求帮助！

显示全部楼层 · 2011-5-21 11:48:57

importjava.awt.*;
importjava.awt.event.*;
publicclassying
{
publicstaticvoidmain(String[]args)
{
Framef=newFrame(\"QQ\");
f.setLayout(null);
f.setSize(600,600);

TextAreata=newTextArea(\"\");
ta.setBounds(50,50,350,200);

TextFieldtf=newTextField(\"\");
tf.setBounds(50,300,350,50);

Buttonb1=newButton(\"发送\");
b1.setBounds(400,300,50,50);

Buttonb2=newButton(\"关闭\");
b2.setBounds(460,300,50,50);

shuyi=newshu();
b1.addActionListener(yi);

jieer=newjie();
b2.addActionListener(er);

f.add(ta);
f.add(tf);
f.add(b1);
f.add(b2);
f.setVisible(true);
}
}

classshuimplementsActionListener
{
publicvoidactionPerformed(ActionEvente)
{
ta.append(tf.setText()\"\");
tf.setText(\"\");
}
}
classjieimplementsActionListener
{
publicvoidactionPerformed(ActionEvente)
{System.exit(1);}
}

千问 · 2011-5-21 11:48:57

importjava.awt.Button;
importjava.awt.Frame;
importjava.awt.TextArea;
importjava.awt.TextField;
importjava.awt.event.ActionEvent;
importjava.awt.event.ActionListener;
importjava.awt.event.WindowAdapter;
importjava.awt.event.WindowEvent;

publicclassyingextendsFrame{
//定义在外面
TextAreata;
TextFieldtf;

publicying(){//用构造函数初始化
ta=newTextArea(\"\");
ta.setBounds(50,50,350,200);

tf=newTextField(\"\");
tf.setBounds(50,300,350,50);

Buttonb1=newButton(\"发送\");
b1.setBounds(400,300,50,50);

Buttonb2=newButton(\"关闭\");
b2.setBounds(460,300,50,50);

add(ta);
add(tf);
add(b1);
add(b2);

//shuyi=newshu();
b1.addActionListener(newActionListener(){

@Override
publicvoidactionPerformed(ActionEvente){
//TODOAuto-generatedmethodstub
ta.append(tf.getText()\"\\n\");
tf.setText(\"\");
}
});

jieer=newjie();
b2.addActionListener(er);

addWindowListener(newWindowAdapter(){
publicvoidwindowClosing(WindowEventee){
System.exit(0);
}
});
}

publicstaticvoidmain(String[]args){
// Framef=newFrame(\"QQ\");
yingf=newying();
f.setLayout(null);
f.setTitle(\"QQ\");
f.setSize(600,600);
f.setVisible(true);
}

classjieimplementsActionListener{
publicvoidactionPerformed(ActionEvente){
System.exit(0);//不是1
}

}
}

你的重新布局一下

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