package untitled1;import java.awt.*;import java.awt.event.*;import java.applet.*;public class phone extends Applet {  PhoneC 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 PhoneC();    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<keylist.length;i++){          add(new Button(keylist[i]));       }    }  }  class PhoneC extends Panel{      CardLayout c1;      public PhoneC(){        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;  }}