java编程100例

				package untitled1;								import java.awt.*;				import java.awt.event.*;				import java.applet.*;								public class phone extends Applet {				  PhoneCard phone;				  Keypad keys;				  String[] keylist = {"1","2","3","4","5","6","7","8","9","*","0","#"};				  boolean isStandalone = false;				  /**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 phone() {				  }				  /**Initialize the applet*/				  public void init() {				    try {				      jbInit();				    }				    catch(Exception e) {				      e.printStackTrace();				    }				    keys = new Keypad(keylist,4,3);				    add(keys);				    phone = new PhoneCard();				    add(phone);				  }				  class Keypad extends Panel{				    public Keypad(String[] keylist,int r,int c){				       setLayout(new GridLayout(r,c,15,2));				       for( int i=0;i				          add(new Button(keylist[i]));				       }				    }				  }								  class PhoneCard extends Panel{				      CardLayout c1;				      public PhoneCard(){				        c1 = new CardLayout();				        setLayout(c1);				        add("1",new Label("1"));				        add("2",new Label("2"));				        add("3",new Label("3"));				        add("4",new Label("4"));				        add("5",new Label("5"));				        add("6",new Label("6"));				        add("7",new Label("7"));				        add("8",new Label("8"));				        add("9",new Label("9"));				        add("*",new Label("*"));				        add("0",new Label("0"));				        add("#",new Label("#"));				      }				    public void showd(String s){				        c1.show(this,s);				    }				    }								    public boolean action(Event e,Object button){				      if(e.target instanceof Button)				          phone.showd((String)button);				          return true;				   }				  /**Component initialization*/				  private void jbInit() throws Exception {				  }				  /**Get Applet information*/				  public String getAppletInfo() {				    return "Applet Information";				  }				  /**Get parameter info*/				  public String[][] getParameterInfo() {				    return null;				  }								}