[1.7.10] Block.getHarvestLevel(int meta) and Block.getHarvestTool(int meta)

     try{

            File file = new File("C:\\Temp\\blocks.txt");

            if (!file.exists())

                file.createNewFile();


            PrintWriter w = new PrintWriter(file);


            for (Object aBlockRegistry : Block.blockRegistry) {

                Block block = (Block) aBlockRegistry;

                w.print(block.getUnlocalizedName());

                w.print(",");

                w.print(block.getBlockHardness(null, 0, 0, 0));

                w.print(",");

                Material material = block.getMaterial();

                w.print(material == Material.rock ? "rock" : (material == Material.wood ? "wood" : "unknown"));

                w.print(",");

                w.print(block.getHarvestLevel(0));

                w.print(",");

                w.print(block.getHarvestTool(0));

                w.println();

            }

            w.close();

        } catch (Exception e){

            System.out.println(e.getStackTrace());

        }

[/Code]

The result looks weird, as harvest level is always -1 and harvest tool is always null

What am I doing wrong?