refactor: use fastutil maps (as suggested by @brachy84) & spotless

Author: MCTian-mi

src/main/java/gregtech/common/gui/widget/prospector/ProspectingTexture.java

@@ -14,12 +14,14 @@
 import net.minecraftforge.fluids.FluidRegistry;
 import net.minecraftforge.fluids.FluidStack;
 
+import it.unimi.dsi.fastutil.bytes.Byte2ObjectArrayMap;
 import org.jetbrains.annotations.Nullable;
 
 import java.awt.*;
 import java.awt.image.BufferedImage;
 import java.awt.image.WritableRaster;
 import java.util.HashMap;
+import java.util.Map;
 
 public class ProspectingTexture extends AbstractTexture {
 
@@ -29,8 +31,8 @@ public class ProspectingTexture extends AbstractTexture {
     private boolean darkMode;
     private int imageWidth = -1;
     private int imageHeight = -1;
-    public final HashMap<Byte, String>[][] map;
-    public static HashMap<Byte, String> emptyTag = new HashMap<>();
+    public final Map<Byte, String>[][] map;
+    public static Map<Byte, String> emptyTag = new Byte2ObjectArrayMap<>();
     private int playerXGui;
     private int playerYGui;
     private final ProspectorMode mode;
@@ -42,7 +44,7 @@ public ProspectingTexture(ProspectorMode mode, int radius, boolean darkMode) {
         this.mode = mode;
         if (this.mode == ProspectorMode.FLUID) {
             // noinspection unchecked
-            map = new HashMap[(radius * 2 - 1)][(radius * 2 - 1)];
+            map = new Byte2ObjectArrayMap[(radius * 2 - 1)][(radius * 2 - 1)];
         } else {
             // noinspection unchecked
             map = new HashMap[(radius * 2 - 1) * 16][(radius * 2 - 1) * 16];
@@ -102,7 +104,7 @@ private BufferedImage getImage() {
 
         for (int i = 0; i < wh; i++) {
             for (int j = 0; j < wh; j++) {
-                HashMap<Byte, String> data = this.map[this.mode == ProspectorMode.ORE ? i : i / 16][this.mode ==
+                Map<Byte, String> data = this.map[this.mode == ProspectorMode.ORE ? i : i / 16][this.mode ==
                         ProspectorMode.ORE ? j : j / 16];
                 // draw bg
                 image.setRGB(i, j, ((data == null) ^ darkMode) ? Color.darkGray.getRGB() : Color.WHITE.getRGB());

src/main/java/gregtech/common/gui/widget/prospector/widget/WidgetProspectingMap.java

@@ -1,6 +1,5 @@
 package gregtech.common.gui.widget.prospector.widget;
 
-import com.google.common.primitives.UnsignedBytes;
 import gregtech.api.gui.IRenderContext;
 import gregtech.api.gui.Widget;
 import gregtech.api.unification.OreDictUnifier;
@@ -37,6 +36,7 @@
 import net.minecraftforge.fml.relauncher.Side;
 import net.minecraftforge.fml.relauncher.SideOnly;
 
+import com.google.common.primitives.UnsignedBytes;
 import org.jetbrains.annotations.NotNull;
 
 import java.awt.*;