Java Programming

IT is telling me i have an error in line 22 and it says class, interface, or enum expected
import java.util.Scanner


/**
* @(#)Blahh.java
*
* Blahh application
*
* @author
* @version 1.00 2010/1/29
*/

public class Blahh {

public static void main(String[] args) {

// TODO, add your application code
System.out.println("Hello World!");
}
}
// PURPOSE: An exercise in tracing a program and understanding

// assignment statements and expressions.

import java.util.Scanner

Public class Trace
{

public static void main (String[] args)
{

int one, two, three;

double what;

Scanner scan = new Scanner(System.in);

System.out.print ("Enter two integers: ");

one = scan.nextInt();

two = scan.nextInt();

system.out.print("Enter a floating point number: ");

what = scan.nextDouble();

three = 4 * one + 5 * two;

two = 2 * one;

system.out.println ("one " + two + ":" + three);

one = 46 / 5 * 2 + 19 % 4;

three = one + two;

what = (what + 2.5) / 2;

System.out.println (what + " is what!");

}}