caculater

package Caculater;

import java.awt.Button;
import java.awt.Font;
import java.awt.TextArea;

import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JTextArea;
import javax.swing.JTextField;

public class Caculater extends JFrame {
    
    private JTextField resultText = new JTextField("");
    

    
    public Caculater()
    {
        setSize(420, 410);
        setLocation(700, 300);
        setVisible(true);
        setLayout(null);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        
        /*菜单栏*/
        JMenuBar mb=new JMenuBar();
        JMenu m1=new JMenu("编辑");
        JMenuItem mnuCopy=new JMenuItem("复制(C)");
        JMenuItem mnuPaste=new JMenuItem("粘贴(P)");
        setJMenuBar(mb);
        mb.add(m1);
        m1.add(mnuCopy);
        m1.add(mnuPaste);
        
        /*字体*/
        Font font=new Font("", ALLBITS, 20);
        
        /*结果框*/
        resultText.setBounds(0, 0, 400, 50);
        resultText.setFont(font);
        add(resultText);
        
        /*按键 baskpace*/
        Button baskpace=new Button("baskpace");
        baskpace.setBounds(0, 50, 200, 50);
        add(baskpace);
        baskpace.addActionListener(new Funtion(resultText));
        
        Button c=new Button("C");
        c.setBounds(200, 50, 200, 50);
        add(c);
        c.addActionListener(new Funtion(resultText));
        
        Button siven=new Button("7");
        siven.setBounds(0, 100, 100, 50);
        add(siven);
        siven.addActionListener(new Funtion(resultText));
        
        
        Button eight=new Button("8");
        eight.setBounds(100, 100, 100, 50);
        add(eight);
        eight.addActionListener(new Funtion(resultText));
        
        
        Button nine=new Button("9");
        nine.setBounds(200, 100, 100, 50);
        add(nine);
        nine.addActionListener(new Funtion(resultText));
        
        Button div=new Button("/");
        div.setBounds(300, 100, 100, 50);
        add(div);
        div.addActionListener(new Funtion(resultText));
        
        
        
        Button four=new Button("4");
        four.setBounds(0, 150, 100, 50);
        add(four);
        four.addActionListener(new Funtion(resultText));
        
        
        Button fine=new Button("5");
        fine.setBounds(100, 150, 100, 50);
        add(fine);
        
        
        Button six=new Button("6");
        six.setBounds(200, 150, 100, 50);
        add(six);
        
        Button mul=new Button("*");
        mul.setBounds(300, 150, 100, 50);
        add(mul);
        
        
        Button one=new Button("1");
        one.setBounds(0, 200, 100, 50);
        add(one);
        one.addActionListener(new Funtion(resultText));
        
        
        Button two=new Button("2");
        two.setBounds(100, 200, 100, 50);
        add(two);
        
        
        Button three=new Button("3");
        three.setBounds(200, 200, 100, 50);
        add(three);
        
        Button sub=new Button("-");
        sub.setBounds(300, 200, 100, 50);
        add(sub);
        
        
        Button zero=new Button("0");            
        zero.setBounds(0, 250, 100, 50);
        add(zero);
        
        
        Button addsub=new Button("+/-");
        addsub.setBounds(100, 250, 100, 50);
        add(addsub);
        
        
        Button point=new Button(".");
        point.setBounds(200, 250, 100, 50);
        add(point);
        
        Button add=new Button("+");
        add.setBounds(300, 250, 100, 50);
        add(add);
        
        
        Button onex=new Button("1/x");             
        onex.setBounds(0, 300, 100, 50);
        add(onex);
        
        
        Button hund=new Button("%");
        hund.setBounds(100, 300, 100, 50);
        add(hund);
        
        
        Button sqrt=new Button("sqrt");
        sqrt.setBounds(200, 300, 100, 50);
        add(sqrt);
        
        Button result=new Button("=");
        result.setBounds(300, 300, 100, 50);
        add(result);
            
        
    }
    
    
    
    public static void main(String[] args) {
        
        new Caculater();
    }

}

funtion

package Caculater;

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JTextField;

public class Funtion implements ActionListener {

    
    JTextField resultText;
    public Funtion(JTextField resultText){
        this.resultText=resultText;
        
    }
    public void actionPerformed(ActionEvent e) {
        
        if(e.getActionCommand().equals("1"))
        {
            resultText.setText("123456789");
            
        }
    }

}