abstract class t1
{
	protected int i = 0;

	public abstract void printI();
}

class t2 extends t1
{
	t2()
	{
		i = 1;
	}

	public void printI()
	{
		System.out.println(i);
	}
}

###

c:\desktop> javac A.java
Process javac exited with code 0
c:\desktop>