Xinu Helper Class

Here is the full Java source code for the Xinu.java helper class.

import java.util.Scanner;
public class Xinu
{
    public static int readint()
    {
        Scanner scanner = new Scanner(System.in);
        return scanner.nextInt();
    }
    public static void printint(int x)
    {
        System.out.println(x);
    }
    public static void print(String s)
    {
        System.out.print(s);
    }
    public static void println()
    {
        System.out.println();
    }
    public static void yield()
    {
        Thread thisThread = Thread.currentThread();
        try
        {
            thisThread.yield();
        }
        catch (Exception e)
        {
            System.out.println(e);
        }
    }
    public static void sleep(int time)
    {
        Thread thisThread = Thread.currentThread();
        try
        {
            thisThread.sleep(time);
        }
        catch (Exception e)
        {
            System.out.println(e);
        }
    }
    public static void threadCreate(Thread t)
    {
        t.start();
    }
}