simplecalculator.java~41~

利用JMC做的简单计算器SimpleCalculator

package simplecalculator;

import java.awt.*;
import javax.swing.*;
import com.borland.jbcl.layout.XYLayout;
import com.borland.jbcl.layout.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

public class SimpleCalculator
    extends JFrame {
  JPanel contentPane;
  JButton jButton1 = new JButton();
  JButton jButton2 = new JButton();
  JButton jButton3 = new JButton();
  JButton jButton4 = new JButton();
  JButton jButton5 = new JButton();
  JButton jButton6 = new JButton();
  JButton jButton7 = new JButton();
  JButton jButton8 = new JButton();
  JButton jButton9 = new JButton();
  JButton jButton10 = new JButton();
  JButton jButton11 = new JButton();
  JButton jButton12 = new JButton();
  JButton jButton13 = new JButton();
  JButton jButton14 = new JButton();
  JButton jButton15 = new JButton();
  JButton jButton16 = new JButton();
  JButton jButton17 = new JButton();
  JButton jButton18 = new JButton();
  JButton jButton19 = new JButton();
  JPanel jPanel1 = new JPanel();
  JPanel jPanel2 = new JPanel();
  JPanel jPanel3 = new JPanel();
  JPanel jPanel4 = new JPanel();
  JPanel jPanel5 = new JPanel();
  JTextField jTextField1 = new JTextField();
  FlowLayout flowLayout1 = new FlowLayout();
  FlowLayout flowLayout2 = new FlowLayout();
  FlowLayout flowLayout3 = new FlowLayout();
  FlowLayout flowLayout4 = new FlowLayout();
  FlowLayout flowLayout5 = new FlowLayout();
  public SimpleCalculator() {
    try {
      setDefaultCloseOperation(EXIT_ON_CLOSE);
      jbInit();
    }
    catch (Exception exception) {
      exception.printStackTrace();
    }
  }

//*—*—添加number(int)方法，为数字按钮事件所调用
   boolean end;//增加的
   String str;//增加的
  public void number(int i)
  {
    String s;//=null;
    s=String.valueOf(i);
    if(end)
    {//如果数字输入结束，则将文本框置零，重新输入
      jTextField1.setText("0");
      end=false;
    }
    if((jTextField1.getText()).equals("0"))
    {//如果文本框的内容为零，则覆盖文本框的内容
      jTextField1.setText(s);
    }
    else
    {//如果文本框的内容不为零，则在内容后添加数字
      String str=jTextField1.getText()+s;//加了String
      jTextField1.setText(str);
    }
  }
  //*—*—添加sign(int s)方法，为运算符按钮事件所调用
   boolean add,sub,mul,div;
   double num1;
   public void sign(int s)
   {
     if(s==1)
     {
       add=true;
       sub=false;
       mul=false;
       div=false;
     }
     else if(s==2)
     {
       add=false;
       sub=true;
       mul=false;
       div=false;
     }
     else if(s==3)
     {
       add=false;
       sub=false;
       mul=true;
       div=false;

     }
     else
     {
       add=false;
       sub=false;
       mul=false;
       div=true;
     }
    num1=Double.parseDouble(jTextField1.getText());// 增加了double
    end=true;
   }
   //=Double.parseDouble(jTextField1.getText());// 增加了double
  /**
   * Component initialization.
   *
   * @throws java.lang.Exception
   */
  private void jbInit() throws Exception {
    contentPane = (JPanel) getContentPane();
    contentPane.setLayout(null);
    contentPane.setBackground(Color.lightGray);//增加
    setSize(new Dimension(245, 300));
    setTitle("一个简单的计算器");
    jButton1.setText("9");
    jButton1.addActionListener(new SimpleCalculator_jButton1_actionAdapter(this));
    jButton2.setText("8");
    jButton2.addActionListener(new SimpleCalculator_jButton2_actionAdapter(this));
    jButton3.setText("7");
    jButton3.addActionListener(new SimpleCalculator_jButton3_actionAdapter(this));
    jButton4.setPreferredSize(new Dimension(39, 25));
    jButton4.setText("/");
    jButton4.addActionListener(new SimpleCalculator_jButton4_actionAdapter(this));
    jButton5.setText("6");
    jButton5.addActionListener(new SimpleCalculator_jButton5_actionAdapter(this));
    jButton6.setText("5");
    jButton6.addActionListener(new SimpleCalculator_jButton6_actionAdapter(this));
    jButton7.setText("4");
    jButton7.addActionListener(new SimpleCalculator_jButton7_actionAdapter(this));
    jButton8.setText("×");
    jButton8.addActionListener(new SimpleCalculator_jButton8_actionAdapter(this));
    jButton9.setPreferredSize(new Dimension(39, 25));
    jButton9.setText("3");
    jButton9.addActionListener(new SimpleCalculator_jButton9_actionAdapter(this));
    jButton10.setText("2");
    jButton10.addActionListener(new SimpleCalculator_jButton10_actionAdapter(this));
    jButton11.setText("1");
    jButton11.addActionListener(new SimpleCalculator_jButton11_actionAdapter(this));
    jButton12.setPreferredSize(new Dimension(43, 25));
    jButton12.setText("—");
    jButton12.addActionListener(new SimpleCalculator_jButton12_actionAdapter(this));
    jButton13.setText("0");
    jButton13.addActionListener(new SimpleCalculator_jButton13_actionAdapter(this));
    jButton14.setPreferredSize(new Dimension(39, 25));
    jButton14.setText("-");
    jButton14.addActionListener(new SimpleCalculator_jButton14_actionAdapter(this));
    jButton15.setPreferredSize(new Dimension(39, 25));
    jButton15.setText(".");
    jButton15.addActionListener(new SimpleCalculator_jButton15_actionAdapter(this));
    jButton16.setText("+");
    jButton16.addActionListener(new SimpleCalculator_jButton16_actionAdapter(this));
    jButton17.setPreferredSize(new Dimension(55, 25));
    jButton17.setText("清零");
    jButton17.addActionListener(new SimpleCalculator_jButton17_actionAdapter(this));
    jButton18.setText("重置");
    jButton18.addActionListener(new SimpleCalculator_jButton18_actionAdapter(this));
    jButton19.setPreferredSize(new Dimension(50, 25));
    jButton19.setText("=");
    jButton19.addActionListener(new SimpleCalculator_jButton19_actionAdapter(this));
    jPanel1.setBounds(new Rectangle(19, 104, 196, 35));
    jPanel1.setBackground(Color.BLUE);//增加
    jPanel1.setLayout(flowLayout4);
    jPanel2.setBounds(new Rectangle(19, 147, 195, 32));
    jPanel2.setBackground(Color.BLUE);//增加
    jPanel2.setLayout(flowLayout5);
    jPanel3.setBounds(new Rectangle(19, 186, 196, 35));
    jPanel3.setBackground(Color.BLUE);//增加
    jPanel3.setLayout(flowLayout3);
    jPanel4.setBounds(new Rectangle(19, 226, 196, 36));
    jPanel4.setBackground(Color.BLUE);//增加
    jPanel4.setLayout(flowLayout1);
    jPanel5.setBounds(new Rectangle(18, 62, 194, 35));
    jPanel5.setBackground(Color.BLUE);//增加
    jPanel5.setLayout(flowLayout2);
    jTextField1.setEditable(false);
    jTextField1.setText("0");
    jTextField1.setBounds(new Rectangle(17, 18, 196, 28));
    flowLayout3.setHgap(3);
    jPanel2.add(jButton5);
    jPanel2.add(jButton6);
    jPanel2.add(jButton7);
    jPanel2.add(jButton8);
    contentPane.add(jPanel1);
    contentPane.add(jPanel4);
    jPanel5.add(jButton17);
    jPanel5.add(jButton18);
    jPanel5.add(jButton19);
    contentPane.add(jTextField1);
    contentPane.add(jPanel5);
    jPanel3.add(jButton9);
    jPanel3.add(jButton10);
    jPanel3.add(jButton11);
    jPanel3.add(jButton12);
    contentPane.add(jPanel2);
    jPanel1.add(jButton1);
    jPanel1.add(jButton2);
    jPanel1.add(jButton3);
    jPanel1.add(jButton4);
    jPanel4.add(jButton13, null);
    jPanel4.add(jButton14, null);
    jPanel4.add(jButton15, null);
    jPanel4.add(jButton16, null);
    contentPane.add(jPanel3);
  }

  public void jButton1_actionPerformed(ActionEvent e) {
    number(9);
  }

  public void jButton2_actionPerformed(ActionEvent e) {
   number(8);
  }

  public void jButton3_actionPerformed(ActionEvent e) {
   number(7);
  }

  public void jButton5_actionPerformed(ActionEvent e) {
    number(6);
  }

  public void jButton6_actionPerformed(ActionEvent e) {
   number(5);
  }

  public void jButton7_actionPerformed(ActionEvent e) {
   number(4);
  }

  public void jButton9_actionPerformed(ActionEvent e) {
   number(3);
  }

  public void jButton10_actionPerformed(ActionEvent e) {
   number(2);
  }

  public void jButton11_actionPerformed(ActionEvent e) {
   number(1);
  }

  public void jButton13_actionPerformed(ActionEvent e) {
   number(0);
  }

  public void jButton4_actionPerformed(ActionEvent e) {
    sign(4);
  }

  public void jButton16_actionPerformed(ActionEvent e) {
  sign(1);
  }

  public void jButton12_actionPerformed(ActionEvent e) {
   sign(2);
  }

  public void jButton8_actionPerformed(ActionEvent e) {
   sign(3);
  }

  public void jButton14_actionPerformed(ActionEvent e) {