import java.io.*;
import java.util.*;
public class TokenExplain {
    public static void main(String[] args) throws IOException {
        //this program gets two tokens on a single line and calculates their sum
        StreamTokenizer in =new StreamTokenizer(new BufferedReader(new InputStreamReader(System.in)));
        in.nextToken();
        int a=(int)in.nval;
        in.nextToken();
        int b=(int) in.nval;
        System.out.println(a+b);
    }

}

As you can see, it was well written, but when it was compiled, it took 0.078 seconds while i see fellow java coders clocking speed of 0.031, can you suggesting better classes to read inputs instead of the one i used, all other suggestions are highly welcome