java program to create final varaible and final class in java.

import java.util.;
import java.io.;

public class ImmutableDemo
{
public static void main(String[] args)
{
Scanner sc=new Scanner(System.in);
final int n=sc.nextInt();
String str=sc.next();
FinalExample f1=new FinalExample(str);
String s=f1.getId();
System.out.println("Id number is="+s);
System.out.println(n);
str=sc.next();
//it is possible
FinalExample f2=new FinalExample(str);
//but it can't be possible
// n=sc.nextInt(); because it is final variable
}
}
//Example of final class
public final class FinalExample
{
final String id;
//example of final variable.
public FinalExample(String id)
{
this.id=id;
}
public String getId()
{
return id;
}
}