applet1.java~11~

很好得jbuilder100例源代码

package ifexample;

import java.awt.*;
import java.awt.event.*;
import java.applet.*;
import com.borland.jbcl.layout.*;

public class Applet1 extends Applet {
  double result = 1;
  double y,x;
  int mul;
  boolean isStandalone = false;
  Button button1 = new Button();
  XYLayout xYLayout1 = new XYLayout();
  TextField textField1 = new TextField();
  /**Get a parameter value*/
  public String getParameter(String key, String def) {
    return isStandalone ? System.getProperty(key, def) :
      (getParameter(key) != null ? getParameter(key) : def);
  }

  /**Construct the applet*/
  public Applet1() {
  }
  /**Initialize the applet*/
  public void init() {
    try {
      jbInit();
    }
    catch(Exception e) {
      e.printStackTrace();
    }
  }
  /**Component initialization*/
  private void jbInit() throws Exception {
    button1.setFont(new java.awt.Font("Dialog", 0, 20));
    button1.setLabel("确定");
    button1.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        button1_actionPerformed(e);
      }
    });
    this.setLayout(xYLayout1);
    textField1.setFont(new java.awt.Font("Dialog", 0, 20));
    this.add(textField1,    new XYConstraints(126, 51, 83, 35));
    this.add(button1, new XYConstraints(127, 96, 80, -1));
  }
  /**Get Applet information*/
  public String getAppletInfo() {
    return "Applet Information";
  }
  /**Get parameter info*/
  public String[][] getParameterInfo() {
    return null;
  }

  void button1_actionPerformed(ActionEvent e) {
         String str1 = textField1.getText() ;
         x = Double.parseDouble(str1);
         result=1;
         for (int i=1;i<=10;i++){
             mul = 1;
             y = 1;
             for (int j=1;j<=i;j++){
                 mul = mul*j;
                 y = y*x;
             }
             result+=y/mul;
          }
        repaint();
  }
  public void paint(Graphics g){
     g.drawString("结果是："+String.valueOf(result),100,200);
  }
}