Prime Factor

public class PrimeFactor{
	public void printPrimeFactors(long num)
	{
		long i=1,j,k;

		while(i<=num)
		{
			k=0;
			if(num%i == 0)
			{
				j=1;
				while(j<=i)
					{
						if(i%j==0)
							k++;
						j++; 	
					}
					if(k==2)
						System.out.println("Prime factor is : "+i);
			}
			i++;
		}
	}
}