Example

import java.io.File;
import net.minecraft.client.Minecraft;

public class mod_Sorter extends BaseMod {
    public static RikProps props;
    static {
        props = new RikProps(new File(getAppdata() + '/' + "SorterMod.properties").getPath());
        props.save();

        ModLoader.RegisterTileEntity(TileEntSorter.class, "Sorter");
    }
//this line. The BlockSorter constructor accepts all these texture indices and returns them when appropriate.
    public qk sorter = new BlockSorter(props.getInt("sorterID",245),ModLoader.addOverride("/terrain.png", "/rikmods/sorter_top.png"),ModLoader.addOverride("/terrain.png", "/rikmods/sorter_bk.png"),ModLoader.addOverride("/terrain.png", "/rikmods/sorter_r.png"),ModLoader.addOverride("/terrain.png", "/rikmods/sorter_g.png"),ModLoader.addOverride("/terrain.png", "/rikmods/sorter_bu.png")).c(1.0F).a(qk.h).a("sorter");

    public String Version() { return "Beta 1.3_01, mod version 1.2"; }
    private static String getAppdata() { return Minecraft.b().getPath(); }

    public mod_Sorter() {
        ModLoader.RegisterBlock(sorter);
        ModLoader.AddName(sorter,"Sorting Machine");
    }

    public void AddRecipes(fr recp) {
        recp.a(new gz(sorter,2), new Object[]{"d", Character.valueOf('d'), qk.v});
    }
}