frame1.java

很好得jbuilder100例源代码

package calculator;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.io.*;
import java.lang.*;
import com.borland.jbcl.layout.*;

public class Frame1 extends JFrame {
  JPanel contentPane;
  CheckboxGroup checkboxGroup1 = new CheckboxGroup();
  Panel panel1 = new Panel();
  VerticalFlowLayout verticalFlowLayout1 = new VerticalFlowLayout();
  Checkbox checkbox1 = new Checkbox();
  Checkbox checkbox2 = new Checkbox();
  Checkbox checkbox3 = new Checkbox();
  Panel panel2 = new Panel();
  VerticalFlowLayout verticalFlowLayout2 = new VerticalFlowLayout();
  TextField textField1 = new TextField();
  TextField textField2 = new TextField();
  Label label1 = new Label();
  TextField textField3 = new TextField();
  Panel panel3 = new Panel();
  Button button1 = new Button();
  VerticalFlowLayout verticalFlowLayout3 = new VerticalFlowLayout();
  Button button3 = new Button();
  BorderLayout borderLayout1 = new BorderLayout();
  Checkbox checkbox4 = new Checkbox();
  Button button2 = new Button();

  /**Construct the frame*/
  public Frame1() {
    enableEvents(AWTEvent.WINDOW_EVENT_MASK);
    try {
      jbInit();
    }
    catch(Exception e) {
      e.printStackTrace();
    }
  }
  /**Component initialization*/
  private void jbInit() throws Exception  {
    //setIconImage(Toolkit.getDefaultToolkit().createImage(Frame1.class.getResource("[Your Icon]")));
    contentPane = (JPanel) this.getContentPane();
    this.setResizable(false);
    this.setSize(new Dimension(317, 201));
    this.setTitle("Calculator");
    panel1.setLayout(verticalFlowLayout1);
    checkbox1.setCheckboxGroup(checkboxGroup1);
    checkbox1.setLabel("加     ");
    checkbox1.setState(true);
    checkbox1.addItemListener(new java.awt.event.ItemListener() {
      public void itemStateChanged(ItemEvent e) {
        checkbox1_itemStateChanged(e);
      }
    });
    checkbox2.setCheckboxGroup(checkboxGroup1);
    checkbox2.setLabel("减     ");
    checkbox3.setCheckboxGroup(checkboxGroup1);
    checkbox3.setLabel("乘     ");
    panel2.setLayout(verticalFlowLayout2);
    verticalFlowLayout2.setAlignment(VerticalFlowLayout.MIDDLE);
    verticalFlowLayout2.setHgap(10);
    verticalFlowLayout2.setVgap(10);
    label1.setText("------------------------------------");
    contentPane.setLayout(borderLayout1);
    button1.setLabel("运算键");
    button1.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        button1_actionPerformed(e);
      }
    });
    panel3.setLayout(verticalFlowLayout3);
    button3.setLabel("退出");
    button3.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        button3_actionPerformed(e);
      }
    });
    verticalFlowLayout1.setAlignment(VerticalFlowLayout.MIDDLE);
    verticalFlowLayout1.setHgap(10);
    verticalFlowLayout1.setVgap(8);
    verticalFlowLayout3.setAlignment(VerticalFlowLayout.MIDDLE);
    verticalFlowLayout3.setHgap(10);
    verticalFlowLayout3.setVgap(20);
    checkbox4.setCheckboxGroup(checkboxGroup1);
    checkbox4.setLabel("除     ");
    textField3.setEditable(false);
    button2.setLabel("清除");
    button2.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        button2_actionPerformed(e);
      }
    });
    contentPane.add(panel1,  BorderLayout.WEST);
    panel1.add(checkbox1, null);
    panel1.add(checkbox2, null);
    panel1.add(checkbox3, null);
    panel1.add(checkbox4, null);
    contentPane.add(panel2, BorderLayout.CENTER);
    panel2.add(textField1, null);
    panel2.add(textField2, null);
    panel2.add(label1, null);
    panel2.add(textField3, null);
    contentPane.add(panel3, BorderLayout.EAST);
    panel3.add(button1, null);
    panel3.add(button2, null);
    panel3.add(button3, null);
  }
  /**Overridden so we can exit when window is closed*/
  protected void processWindowEvent(WindowEvent e) {
    super.processWindowEvent(e);
    if (e.getID() == WindowEvent.WINDOW_CLOSING) {
      System.exit(0);
    }
  }


  void button1_actionPerformed(ActionEvent e) {
    float num1,num2,resultnum;
    try{
      num1 = Float.valueOf(textField1.getText()).floatValue();
      num2 = Float.valueOf(textField2.getText()).floatValue();
      if (checkbox1.getState())
        resultnum = num1+num2;
      else if (checkbox2.getState())
        resultnum = num1-num2;
      else if (checkbox3.getState())
        resultnum = num1*num2;
      else
        resultnum = num1/num2;
      textField3.setText(Float.toString(resultnum));
    }catch (Exception ex){
      textField3.setText(e.toString());
    }
  }

  void button3_actionPerformed(ActionEvent e) {
System.exit(0);
  }

  void checkbox1_itemStateChanged(ItemEvent e) {

  }

  void button2_actionPerformed(ActionEvent e) {
  textField1.setText("");
  textField2.setText("");
  textField3.setText("");
  }



}