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();  Label label1 = new Label();  /**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("確定");    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));    label1.setFont(new java.awt.Font("Dialog", 0, 15));    label1.setText("計算exp(x)");    this.add(textField1,    new XYConstraints(126, 51, 83, 35));    this.add(button1, new XYConstraints(127, 96, 80, -1));    this.add(label1,      new XYConstraints(22, 54, 93, 28));  }  /**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() ;         result=1;         try{            x = Double.parseDouble(str1);            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();         }         catch(Exception ex){            ex.printStackTrace() ;         }    }  public void paint(Graphics g){     g.drawString("結果是："+String.valueOf(result),100,200);  }}