Program to create an applet to accept a username as parameter and display number of characters.

In this program, we have to get the username from Applet's <PARAM> tag and display the length of the string. The value of parameter can be get using getParameter( ) method of applet. The length( )function is used to find length of given string.


PROGRAM

import java.applet.Applet;
import java.awt.Graphics;

public class CharCountParam extends Applet{

 String uname="", msg;
 int length;
 
 public void init() 
 {
  
  uname = getParameter("Username");
  length = uname.length();
    
  uname = "Hello " + uname;
  msg = "Length = " + length;
  }
 
 public void paint(Graphics g)
 {
  g.drawString(uname,50,50);
  g.drawString(msg, 50, 90);
 }
}

/* 
<applet code="CharCountParam" width=200 height=200>
<param name="Username" value="RAHUL">
</applet>
*/

OUTPUT 

C:\>javac CharCountParam.java 
C:\>appletviewer CharCountParam.java