Working with threads. Example from java docs

Hello there I am learing java like everybody here and I ecounter a small
problem that I am unable to solve.
This is the link to Java lang. spec. "volatile fields"
http://java.sun.com/docs/books/jls/third_edition/html/classes.html#8.3.1.4

There is a paragraph:
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If, in the following example, one thread repeatedly calls the method one
(but no more than Integer.MAX_VALUE times in all), and another thread
repeatedly calls the method two:
class Test {
    static int i = 0, j = 0;
    static void one() { i++; j++; }
    static void two() {
        System.out.println("i=" + i + " j=" + j);
    }
}then method two could occasionally print a value for j that is greater than
the value of i,
because the example includes no synchronization and, under the rules
explained in ?17,
the shared values of i and j might be updated out of order.
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I tryied to write a simple program that is based on the above example so
that I can see different values of i and j.
I wrote one but unfortunatelly every time program runs each line shows the
same values for i and j.
Can you help me and fix my code or write another similar program that will
be doing such a thing
 so I can belive that it could happen - ( method two could occasionally
print a value for j that is greater than the value of i )

This is my code:
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class Test
{
    static int i=0, j=0;
    public static void one() { i++; j++; }
    public static void two()
    {
        System.out.println( "i=" + i + " j=" + j );
    }
}

class T1 extends java.lang.Thread
{
    public T1()
    {
        super();
        start();
    }

    public void run( )
    {
        while( true )
        {
            Test.one();
            if ( this.interrupted() ) return;
            yield();
        }
    }
}

class T2 extends java.lang.Thread
{
    public T2()
    {
        super();
        start();
    }

    public void run( )
    {
        while( true )
        {
            Test.two();
            if ( this.interrupted() ) return;
            yield();
        }
    }
}

public class Ex01
{
    public static void main( java.lang.String [] args )
    throws java.lang.InterruptedException
    {
        T2 t2 = new T2( );
        T1 t1 = new T1( );
        Thread.sleep(2000);
        t1.interrupt();
        t2.interrupt();
    }
}

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Thank you
Progzmaster