Maxing out CPU cores

gistfile1.java

import java.util.ArrayList;
import java.util.List;


public class TestTest implements Runnable {

    public static void main(String [] args) throws InterruptedException {
        List<Thread> threads = new ArrayList<Thread>();
        
        for (int x = 0; x < 10; x++) {
            threads.add(new Thread(new TestTest()));
        }
        
        for (Thread t : threads) {
            t.start();
        }
        
        threads.get(0).join();
    }

    @Override
    public void run() {
        int x = 0;
        while (true) {
            x++;
        }
        
    }
}