int[] t1 = { 1, 2 ,3 ,4 ,5, 6, 7, 8, 9, 10 };
int[] t2 = { -4, -5, -6, -7, 0, 0 };		

System.arraycopy( t2, 0, t1, 3, 4 );
		
System.out.println( Arrays.toString( t1 ) );