keep getting error message class, interface, or enum expected

[darr]

I am trying to get the following program to work using jcreator but keep getting a message on the highlighted line of code saying class, interface, or enum expected
/**
* @(#)java_practice.java
*
* java_practice application
*
* @author
* @version 1.00 2010/9/23
*/

import java.io.*;
import java.text.*;

public class java_practice
{


public static void main(String[] args)
throws java.io.IOException
{
Sums doingSums = new Sums();
doingSums.displayResults();

}
}

//class to show the sum and difference of two numbers
import java.io.*;

public class Sums
{
int firstNumber, secondNumber;
String inString;

Sums()
throws java.io.IOException
{
BufferedReader in = new BufferedReader(new InputStreamReader(System.in));

System.out.println("enter first number: ");
inString = in.readLine();
firstNumber = Integer.valueOf(inString).intValue();

System.out.println("enter second number: ");
inString = in.readLine();
secondNumber = Integer.valueOf(inString).intValue();


}
int sum ()
{
return (firstNumber + secondNumber);
}

int difference()
{
return (firstNumber - secondNumber);
}

public void displayResults()
{
System.out.println(firstNumber + " + " + secondNumber + " = " + this.sum() + "\n");
System.out.println(firstNumber + " - " + secondNumber + " = " + this.difference() + "\n");
}
}

[pbrockway2]

Make sure the Sums class is defined in its own file - Sums.java

[Norm]

If you want the Sums class in the same source file as the other class, remove the public attribute and move the import statement to the top of the file.