?? 圖形用戶(hù)界面求和3.txt
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import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
class ShowTextFrame extends JFrame implements ActionListener{
JTextField myField1=new JTextField(10);
JTextField myField2=new JTextField(10);
JTextField myField3=new JTextField(20);
JButton okButton=new JButton("求和");
JLabel myLabel1=new JLabel("請(qǐng)輸入兩個(gè)整數(shù): ");
JLabel myLabel2=new JLabel("你所輸入的兩個(gè)整數(shù)的和是: ");
public ShowTextFrame(){
super("顯示文本信息");
setSize(300,150);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
Container pane=getContentPane();
FlowLayout flo=new FlowLayout(FlowLayout.CENTER,10,10);
pane.setLayout(flo);
okButton.addActionListener(this);
pane.add(myLabel1);
pane.add(myField1);
pane.add(myField2);
pane.add(okButton);
pane.add(myLabel2);
pane.add(myField3);
setVisible(true);
setContentPane(pane);
}
public void actionPerformed(ActionEvent e){
if(e.getSource()==okButton){
String str1=myField1.getText();
String str2=myField2.getText();
int x=Integer.parseInt(str1);
int y=Integer.parseInt(str2);
int z=x+y;
String str3=String.valueOf(z);
myField3.setText(str3);
}
}
}
public class TestA3{
public static void main(String arguments[]){
ShowTextFrame myFrame=new ShowTextFrame();
}
}
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