Lame Java Trivia

       Snippet 1:

        start = runtime.freeMemory();
        int i=1,j=2,k=3;
        end =  runtime.freeMemory();
        System.out.println("That took " + (start-end) + " bytes.");

        Snippet 2:

        start = runtime.freeMemory();
        int array[] ={1,2,3};
        end =  runtime.freeMemory();
        System.out.println("That took " + (start-end) + " bytes.");

Assuming GC doesn't run inbetween the start and end variable assignments, Snippet 1 will also say 0 bytes used whereas snippet 2 will always have a non zero positive value - though both seem to have the same three numbers being created 1,2 and 3 - why?