Why this code generate compile time error?

[mjahan]

why the following code generate compile time error?

import java.util.*;

public class hasmat
{
public static void main(String args[])
{
long a, b=9;

Scanner test = new Scanner(System.in);

while(test.hasNextLong())
{
a= test.nextLong();

if(test.hasNextLong())
b= test.nextLong();

if(a>b)
System.out.println(a-b);
else
System.out.println(b-a);
}

}
}

[chunyi81]

I believe your code is written for Java JDK 1.5 (Java SDK 5.0)?

The Java compiler in the OJ is gcj, which supports a Java JDK 1.1 and a subset of Java JDK 1.2

[pronebear]

Your class name should be "Main".