frame1.java~21~

JAVA教学用代码

package jsjexample;

import java.awt.BorderLayout;
import java.awt.Dimension;

import javax.swing.JFrame;
import javax.swing.JPanel;
import java.awt.*;
import javax.swing.JTextField;
import javax.swing.JButton;
import javax.swing.BorderFactory;
import javax.swing.border.Border;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.*;

public class Frame1 extends JFrame {
    boolean flag=false;
    String operand1;
    String operand2;
    int result;
    String action;


    ///
    JPanel contentPane;
    BorderLayout borderLayout1 = new BorderLayout();
    JPanel jPanel1 = new JPanel();
    JPanel jPanel2 = new JPanel();
    JTextField txtresult = new JTextField();
    GridLayout gridLayout1 = new GridLayout();
    JButton btn7 = new JButton();
    JButton bnt9 = new JButton();
    JButton btn8 = new JButton();
    JButton btn4 = new JButton();
    JButton btndivide = new JButton();
    JButton btn5 = new JButton();
    JButton btn6 = new JButton();
    JButton btn3 = new JButton();
    JButton btnminltiply = new JButton();
    JButton btn1 = new JButton();
    JButton btnplus = new JButton();
    JButton btn2 = new JButton();
    JButton btnminus = new JButton();
    JButton btnclear = new JButton();
    JButton btn0 = new JButton();
    Border border1 = BorderFactory.createEmptyBorder(10, 20, 10, 20);
    JButton jButton1 = new JButton();
    public Frame1() {
        try {
            setDefaultCloseOperation(EXIT_ON_CLOSE);
            jbInit();
        } catch (Exception exception) {
            exception.printStackTrace();
        }
    }

    /**
     * Component initialization.
     *
     * @throws java.lang.Exception
     */
    private void jbInit() throws Exception {
        contentPane = (JPanel) getContentPane();
        contentPane.setLayout(borderLayout1);
        setSize(new Dimension(240, 274));
        setTitle("Frame Title");
        jPanel2.setBackground(Color.pink);
        jPanel1.setBackground(Color.orange);
        jPanel1.setBorder(border1);
        jPanel1.setLayout(gridLayout1);
        txtresult.setPreferredSize(new Dimension(200, 22));
        txtresult.setHorizontalAlignment(SwingConstants.RIGHT);
        //  jTextField1.setHorizontalAlignment(SwingConstants.RIGHT);
        btn7.setText("7");
        bnt9.setText("9");
        btn8.setText("8");
        gridLayout1.setColumns(4);
        gridLayout1.setHgap(10);
        gridLayout1.setRows(4);
        gridLayout1.setVgap(10);
        btn4.setText("4");
        btndivide.setText("/");
        btn5.setText("5");
        btn6.setText("6");
        btn3.setText("3");
        btn3.addActionListener(new Frame1_btn3_actionAdapter(this));
        btnminltiply.setText("*");
        btn1.setText("1");
        btn1.addActionListener(new Frame1_btn1_actionAdapter(this));
        btnplus.setText("+");
        btnplus.addActionListener(new Frame1_btnplus_actionAdapter(this));
        btn2.setText("2");
        btn2.addActionListener(new Frame1_btn2_actionAdapter(this));
        btnminus.setText("-");
        btnminus.addActionListener(new Frame1_btnminus_actionAdapter(this));
        btnclear.setText("=");
        btnclear.addActionListener(new Frame1_btnclear_actionAdapter(this));
        btn0.setText("0");
        jButton1.setText("c");
        contentPane.add(jPanel1, java.awt.BorderLayout.CENTER);
        jPanel1.add(btn7);
        jPanel1.add(btn8);
        jPanel1.add(bnt9);
        jPanel1.add(btndivide);
        jPanel1.add(btn4);
        jPanel1.add(btn5);
        jPanel1.add(btn6);
        jPanel1.add(btnminltiply);
        jPanel1.add(btn1);
        jPanel1.add(btn2);
        jPanel1.add(btn3);
        jPanel1.add(btnplus);
        jPanel1.add(btn0);
        jPanel1.add(btnclear);
        jPanel1.add(btnminus);
        jPanel1.add(jButton1);
        contentPane.add(jPanel2, java.awt.BorderLayout.NORTH);
        jPanel2.add(txtresult);
    }


    public void btn1_actionPerformed(ActionEvent e) {
        txtresult.setText(txtresult.getText()+"1");

//        if(flag)
//        {
//            txtresult.setText(btn1.getActionCommand());
//            flag=false;
//        }
//        else
//        {
//            txtresult.setText
//                    (txtresult.getText()+
//                     btn1.getActionCommand());
//
//        }
    }

    public void btn2_actionPerformed(ActionEvent e) {
        txtresult.setText(txtresult.getText()+"2");
    }

    public void btn3_actionPerformed(ActionEvent e) {
        txtresult.setText(txtresult.getText()+"3");
    }

    public void btnplus_actionPerformed(ActionEvent e) {
        action="plus";
        operand1=txtresult.getText();

        txtresult.setText("");


    }

    public void btnminus_actionPerformed(ActionEvent e) {
        action="minus";
        operand1=txtresult.getText();
        txtresult.setText("");
    }

    public void btnclear_actionPerformed(ActionEvent e) {
        operand2=txtresult.getText();

       int result=0;
       if(action.equals("plus"))
       {
           result=Integer.parseInt(operand1)+
                  Integer.parseInt(operand2);

       }
       if(action.equals("minus"))
       {
           result=Integer.parseInt(operand1)-
                  Integer.parseInt(operand2);
       }
       txtresult.setText(result+"");

    }
}


class Frame1_btnclear_actionAdapter implements ActionListener {
    private Frame1 adaptee;
    Frame1_btnclear_actionAdapter(Frame1 adaptee) {
        this.adaptee = adaptee;
    }

    public void actionPerformed(ActionEvent e) {
        adaptee.btnclear_actionPerformed(e);
    }
}


class Frame1_btnplus_actionAdapter implements ActionListener {
    private Frame1 adaptee;
    Frame1_btnplus_actionAdapter(Frame1 adaptee) {
        this.adaptee = adaptee;
    }

    public void actionPerformed(ActionEvent e) {
        adaptee.btnplus_actionPerformed(e);
    }
}


class Frame1_btnminus_actionAdapter implements ActionListener {
    private Frame1 adaptee;
    Frame1_btnminus_actionAdapter(Frame1 adaptee) {
        this.adaptee = adaptee;
    }

    public void actionPerformed(ActionEvent e) {
        adaptee.btnminus_actionPerformed(e);
    }
}


class Frame1_btn3_actionAdapter implements ActionListener {
    private Frame1 adaptee;
    Frame1_btn3_actionAdapter(Frame1 adaptee) {
        this.adaptee = adaptee;
    }

    public void actionPerformed(ActionEvent e) {
        adaptee.btn3_actionPerformed(e);
    }
}


class Frame1_btn2_actionAdapter implements ActionListener {
    private Frame1 adaptee;
    Frame1_btn2_actionAdapter(Frame1 adaptee) {
        this.adaptee = adaptee;
    }

    public void actionPerformed(ActionEvent e) {
        adaptee.btn2_actionPerformed(e);
    }
}


class Frame1_btn1_actionAdapter implements ActionListener {
    private Frame1 adaptee;
    Frame1_btn1_actionAdapter(Frame1 adaptee) {
        this.adaptee = adaptee;
    }

    public void actionPerformed(ActionEvent e) {

        adaptee.btn1_actionPerformed(e);
    }
}