ResourceLocationHelper

src/main/java/net/minecraftforge/common/util/ResourceLocationHelper.java

@@ -0,0 +1,40 @@
+package net.minecraftforge.common.util;
+
+import net.minecraft.util.ResourceLocation;
+
+public class ResourceLocationHelper {
+
+    /**
+     * Create a resourceLocation under the default namespace.
+     * For example :
+     *     ResourceLocationHelper.create("minecraft", value)
+     *     ResourceLocationHelper.of("minecraft").create(value)
+     *     new ResourceLocation(value)
+     * is equal
+     *
+     * Modder could create an instance of ResourceLocationHelper. It is very helpful.
+     * And, you could also use the static method at your api.
+     *
+     * @param defaultNamespace the default namespace
+     * @param value the value
+     * @return the resource location
+     */
+    public static ResourceLocation create(String defaultNamespace, String value) {
+        int idx = value.indexOf(':');
+        return idx > 0 ? new ResourceLocation(value.substring(0, idx), value.substring(idx +1)) : new ResourceLocation(defaultNamespace, value);
+    }
+
+    public ResourceLocation create(String value) {
+        return create(this.defaultNamespace, value);
+    }
+
+    public static ResourceLocationHelper of(String defaultNamespace) {
+        return new ResourceLocationHelper(defaultNamespace);
+    }
+
+    private final String defaultNamespace;
+
+    private ResourceLocationHelper(String defaultNamespace) {
+        this.defaultNamespace = defaultNamespace;
+    }
+}

src/main/java/net/minecraftforge/fml/common/registry/EntityEntryBuilder.java

@@ -28,6 +28,7 @@
 import net.minecraft.util.text.TextComponentTranslation;
 import net.minecraft.world.World;
 import net.minecraft.world.biome.Biome;
+import net.minecraftforge.common.util.ResourceLocationHelper;
 import net.minecraftforge.fml.common.FMLLog;
 import net.minecraftforge.fml.common.Loader;
 import net.minecraftforge.fml.common.ModContainer;
@@ -151,7 +152,7 @@ public final EntityEntryBuilder<E> id(@Nonnull final ResourceLocation id, final
     public final EntityEntryBuilder<E> id(@Nonnull final String id, final int network)
     {
         checkNotNull(id, "id");
-        return this.id(new ResourceLocation(id.indexOf(':') == -1 ? this.mod.getModId() + ':' + id : id), network);
+        return this.id(ResourceLocationHelper.create(this.mod.getModId(), id), network);
     }
 
     /**