stringsample.java

很好得jbuilder100例源代码

package untitled2;

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

public class stringsample extends Applet {
  int i = 0;
  String str = null;
  boolean isStandalone = false;
  TextField text1 = new TextField();
  Button button1 = new Button();
  XYLayout xYLayout1 = new XYLayout();
  /**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 stringsample() {
  }
  /**Initialize the applet*/
  public void init() {
    try {
      jbInit();
    }
    catch(Exception e) {
      e.printStackTrace();
    }
  }
  /**Component initialization*/
  private void jbInit() throws Exception {
    text1.setFont(new java.awt.Font("Dialog", 0, 16));
    button1.setFont(new java.awt.Font("Dialog", 0, 16));
    button1.setLabel("添加");
    button1.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        button1_actionPerformed(e);
      }
    });
    this.setLayout(xYLayout1);
    this.add(button1,    new XYConstraints(190, 9, -1, -1));
    this.add(text1,   new XYConstraints(30, 9, 150, -1));
  }
  /**Get Applet information*/
  public String getAppletInfo() {
    return "Applet Information";
  }
  /**Get parameter info*/
  public String[][] getParameterInfo() {
    return null;
  }

  void button1_actionPerformed(ActionEvent e) {
      str = text1.getText() ;
      text1.setText("");
      repaint();
  }
  public void paint(Graphics g){
      g.drawString(str,20,i*15+60) ;
      i++;
  }
  public void update(Graphics g){
     paint(g);
  }
}