Windows计算机功能Java源码

代码如下

import java.awt.Color;
import java.awt.Container;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;

class myWindows extends JFrame implements ActionListener
{
        private static final long serialVersionUID = 1L;
        boolean tag=true;  
       boolean signal=true;
    JTextField text1;
    public myWindows(int w,int h)
    {
        setTitle("计算器程序");
        this.setBounds(100,100,350,300);
        Container con = getContentPane();
        con.setLayout(new GridLayout(3,1));
        JPanel p1 = new JPanel();
        p1.setLayout(new GridLayout(2,1));
        text1 = new JTextField(150);
        text1.setHorizontalAlignment(text1.RIGHT);
        text1.setText("0.");
        JPanel p1_1  = new JPanel();
        p1_1.setLayout(new GridLayout(1,4));
        JButton btn_BackSpace = new JButton("BackSpace");
        btn_BackSpace.setForeground(Color.red);
        btn_BackSpace.addActionListener(this);
        JButton btn_CE = new JButton("CE");
        btn_CE.setForeground(Color.red);
        JButton btn_C = new JButton("C");
        btn_C.setForeground(Color.red);
        btn_C.addActionListener(this);
        p1.add(text1);
        p1_1.add(new JLabel());
        p1_1.add(btn_BackSpace);
        p1_1.add(btn_CE);
        p1_1.add(btn_C);
        p1.add(p1_1);       

        JPanel p2 = new JPanel();
        p2.setLayout(new GridLayout(2,1));
        JPanel p2_1 = new JPanel();
        p2_1.setLayout(new GridLayout(1,6));
        JButton btn_MC = new JButton("MC");
        btn_MC.setForeground(Color.red);
        JButton btn_7 = new JButton("7");
        btn_7.setForeground(Color.BLUE);
        btn_7.addActionListener(this);
        JButton btn_8 = new JButton("8");
        btn_8.setForeground(Color.BLUE);
        btn_8.addActionListener(this);
        JButton btn_9 = new JButton("9");
        btn_9.setForeground(Color.BLUE);
        btn_9.addActionListener(this);
        JButton btn_wind= new JButton("/");
        btn_wind.setForeground(Color.red);
        JButton btn_sqrt = new JButton("sqrt");
        btn_sqrt.setForeground(Color.BLUE);
        p2_1.add(btn_MC); p2_1.add(btn_7);
        p2_1.add(btn_8); p2_1.add(btn_9);
        p2_1.add(btn_wind);p2_1.add(btn_sqrt);
        JPanel p2_2 = new JPanel();
        p2_2.setLayout(new GridLayout(1,6));
        JButton btn_MR = new JButton("MR");
        btn_MR.setForeground(Color.red);
        JButton btn_4 = new JButton("4");
        btn_4.setForeground(Color.BLUE);
        btn_4.addActionListener(this);
        JButton btn_5 = new JButton("5");
        btn_5.setForeground(Color.BLUE);
        btn_5.addActionListener(this);
        JButton btn_6 = new JButton("6");
        btn_6.setForeground(Color.BLUE);
        btn_6.addActionListener(this);
        JButton btn_star= new JButton("*");
        btn_star.setForeground(Color.red);
        JButton btn_mod = new JButton("%");
        btn_mod.setForeground(Color.BLUE);
        p2_2.add(btn_MR);
        p2_2.add(btn_4); p2_2.add(btn_5);
        p2_2.add(btn_6); 
        p2_2.add(btn_star);p2_2.add(btn_mod);
        p2.add(p2_1);p2.add(p2_2);
        
        JPanel p3 = new JPanel();
        p3.setLayout(new GridLayout(2,1));
        JPanel p3_1 = new JPanel();
        p3_1.setLayout(new GridLayout(1,6));
        JButton btn_MS = new JButton("MS");
        btn_MS.setForeground(Color.red);
        JButton btn_1 = new JButton("1");
        btn_1.setForeground(Color.BLUE);
        btn_1.addActionListener(this);
        JButton btn_2 = new JButton("2");
        btn_2.setForeground(Color.BLUE);
        btn_2.addActionListener(this);
        JButton btn_3 = new JButton("3");
        btn_3.setForeground(Color.BLUE);
        btn_3.addActionListener(this);
        JButton btn_sub= new JButton("-");
        btn_sub.setForeground(Color.red);
        JButton btn_reverse = new JButton("1/x");
        btn_reverse.setForeground(Color.BLUE);
        p3_1.add(btn_MS); p3_1.add(btn_1);
        p3_1.add(btn_2); p3_1.add(btn_3);
        p3_1.add(btn_sub);p3_1.add(btn_reverse);
        JPanel p3_2 = new JPanel();
        p3_2.setLayout(new GridLayout(1,6));
        JButton btn_Madd = new JButton("M+");
        btn_Madd.setForeground(Color.red);
        JButton btn_0= new JButton("0");
        btn_0.setForeground(Color.BLUE);
        btn_0.addActionListener(this);
        JButton btn_singal = new JButton("+/-");
        btn_singal.setForeground(Color.BLUE);
        btn_singal.addActionListener(this);
        JButton btn_dot = new JButton(".");
        btn_dot.addActionListener(this);
        JButton btn_add= new JButton("+");
        btn_add.setForeground(Color.red);
        JButton btn_equal = new JButton("=");
        btn_equal.setForeground(Color.red);
        p3_2.add(btn_Madd);
        p3_2.add(btn_0); p3_2.add(btn_singal);
        p3_2.add(btn_dot);
        p3_2.add(btn_add);p3_2.add(btn_equal);
        p3.add(p3_1);p3.add(p3_2);
        con.add(p1);con.add(p2);con.add(p3);
        setVisible(true);
    }
    public void press_dot()
    {
        tag=false;
    }

　　运行结果
<ignore_js_op> 

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