diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/setting/Config.java b/HMCL/src/main/java/org/jackhuang/hmcl/setting/Config.java
index a8a85f3de..3037a7621 100755
--- a/HMCL/src/main/java/org/jackhuang/hmcl/setting/Config.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/setting/Config.java
@@ -87,6 +87,24 @@ public final class Config implements Cloneable {
     @SerializedName("fontSize")
     private int fontSize;
 
+    public Config() {
+        clientToken = UUID.randomUUID().toString();
+        logintype = downloadtype = 0;
+        enableAnimation = enableBlur = true;
+        if (OS.os() == OS.WINDOWS)
+            enableShadow = true;
+        theme = LAFTheme.BLUE.id;
+        decorated = OS.os() == OS.LINUX;
+        auth = new HashMap<>();
+        Font font = Font.decode("Consolas");
+        if (font == null)
+            font = Font.decode("Monospace");
+        if (font != null)
+            fontFamily = font.getFamily();
+        fontSize = 12;
+        commonpath = MCUtils.getLocation().getPath();
+    }
+
     public List<JdkVersion> getJava() {
         return java == null ? java = new ArrayList<>() : java;
     }
@@ -222,24 +240,6 @@ public final class Config implements Cloneable {
         Settings.save();
     }
 
-    public Config() {
-        clientToken = UUID.randomUUID().toString();
-        logintype = downloadtype = 0;
-        enableAnimation = enableBlur = true;
-        if (OS.os() == OS.WINDOWS)
-            enableShadow = true;
-        theme = LAFTheme.BLUE.id;
-        decorated = OS.os() == OS.LINUX;
-        auth = new HashMap<>();
-        Font font = Font.decode("Consolas");
-        if (font == null)
-            font = Font.decode("Monospace");
-        if (font != null)
-            fontFamily = font.getFamily();
-        fontSize = 12;
-        commonpath = MCUtils.getLocation().getPath();
-    }
-
     public DownloadType getDownloadSource() {
         if (downloadtype >= DownloadType.values().length || downloadtype < 0) {
             downloadtype = 0;
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/util/HMCLAssetService.java b/HMCL/src/main/java/org/jackhuang/hmcl/util/HMCLAssetService.java
index 333e93b06..08245ae5c 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/util/HMCLAssetService.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/util/HMCLAssetService.java
@@ -33,7 +33,7 @@ public class HMCLAssetService extends MinecraftAssetService {
     }
     
     private boolean useSelf(String assetId) {
-        return new File(service.baseDirectory(), "assets/indexes/" + assetId + ".json").exists() || ((HMCLMinecraftService) service).p.isNoCommon();
+        return new File(service.baseDirectory(), "assets/indexes/" + assetId + ".json").exists() || ((HMCLMinecraftService) service).getProfile().isNoCommon();
     }
 
     @Override
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/util/HMCLGameProvider.java b/HMCL/src/main/java/org/jackhuang/hmcl/util/HMCLGameProvider.java
index 6dbaa16a9..b94e72668 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/util/HMCLGameProvider.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/util/HMCLGameProvider.java
@@ -29,7 +29,7 @@ import org.jackhuang.hmcl.setting.VersionSetting;
  *
  * @author huangyuhui
  */
-public class HMCLGameProvider extends MinecraftVersionManager {
+public class HMCLGameProvider extends MinecraftVersionManager<HMCLMinecraftService> {
 
     public HMCLGameProvider(HMCLMinecraftService p) {
         super(p);
@@ -37,9 +37,9 @@ public class HMCLGameProvider extends MinecraftVersionManager {
 
     @Override
     public File getLibraryFile(MinecraftVersion version, IMinecraftLibrary lib) {
-        VersionSetting vs = ((HMCLMinecraftService) service).getVersionSetting(version.id);
+        VersionSetting vs = service.getProfile().getVersionSetting(version.id);
         File self = super.getLibraryFile(version, lib);
-        if (self.exists() || (vs != null && ((HMCLMinecraftService) service).p.isNoCommon()))
+        if (self.exists() || (vs != null && service.getProfile().isNoCommon()))
             return self;
         else
             return lib.getFilePath(new File(Settings.getInstance().getCommonpath()));
@@ -47,7 +47,7 @@ public class HMCLGameProvider extends MinecraftVersionManager {
 
     @Override
     public File getRunDirectory(String id) {
-        VersionSetting vs = ((HMCLMinecraftService) service).getVersionSetting(id);
+        VersionSetting vs = service.getProfile().getVersionSetting(id);
         if (vs == null)
             return super.getRunDirectory(id);
         else
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/util/HMCLMinecraftService.java b/HMCL/src/main/java/org/jackhuang/hmcl/util/HMCLMinecraftService.java
index b88694887..9780f6ec5 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/util/HMCLMinecraftService.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/util/HMCLMinecraftService.java
@@ -18,12 +18,8 @@
 package org.jackhuang.hmcl.util;
 
 import org.jackhuang.hmcl.core.service.IMinecraftService;
-import org.jackhuang.hmcl.core.service.IMinecraftAssetService;
 import org.jackhuang.hmcl.core.service.IMinecraftLoader;
-import org.jackhuang.hmcl.core.service.IMinecraftDownloadService;
-import org.jackhuang.hmcl.core.service.IMinecraftProvider;
 import org.jackhuang.hmcl.core.service.IMinecraftModService;
-import org.jackhuang.hmcl.core.service.IMinecraftInstallerService;
 import com.google.gson.JsonSyntaxException;
 import java.io.File;
 import java.util.HashMap;
@@ -35,7 +31,6 @@ import org.jackhuang.hmcl.api.event.version.RefreshedVersionsEvent;
 import org.jackhuang.hmcl.api.event.version.RefreshingVersionsEvent;
 import org.jackhuang.hmcl.core.GameException;
 import org.jackhuang.hmcl.core.install.MinecraftInstallerService;
-import org.jackhuang.hmcl.core.asset.MinecraftAssetService;
 import org.jackhuang.hmcl.api.auth.UserProfileProvider;
 import org.jackhuang.hmcl.core.download.MinecraftDownloadService;
 import org.jackhuang.hmcl.api.game.LaunchOptions;
@@ -55,7 +50,7 @@ import org.jackhuang.hmcl.util.task.TaskWindow;
  */
 public class HMCLMinecraftService extends IMinecraftService {
 
-    Profile p;
+    private Profile p;
     final Map<String, VersionSetting> versionSettings = new HashMap<>();
 
     public HMCLMinecraftService(Profile p) {
@@ -143,10 +138,10 @@ public class HMCLMinecraftService extends IMinecraftService {
         return p.getGameDir();
     }
 
-    protected IMinecraftProvider provider;
+    protected HMCLGameProvider provider;
 
     @Override
-    public IMinecraftProvider version() {
+    public HMCLGameProvider version() {
         return provider;
     }
 
@@ -160,21 +155,21 @@ public class HMCLMinecraftService extends IMinecraftService {
     protected MinecraftDownloadService mds;
 
     @Override
-    public IMinecraftDownloadService download() {
+    public MinecraftDownloadService download() {
         return mds;
     }
 
-    final MinecraftAssetService mas;
+    final HMCLAssetService mas;
 
     @Override
-    public IMinecraftAssetService asset() {
+    public HMCLAssetService asset() {
         return mas;
     }
 
     protected MinecraftInstallerService mis;
 
     @Override
-    public IMinecraftInstallerService install() {
+    public MinecraftInstallerService install() {
         return mis;
     }
 
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/core/service/IMinecraftProvider.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/core/service/IMinecraftProvider.java
index 929e25e6d..1f16c1a08 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/core/service/IMinecraftProvider.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/core/service/IMinecraftProvider.java
@@ -33,11 +33,11 @@ import org.jackhuang.hmcl.api.game.IMinecraftLibrary;
  * org.jackhuang.hmcl.core.version.MinecraftVersionManager
  * @author huangyuhui
  */
-public abstract class IMinecraftProvider {
+public abstract class IMinecraftProvider<T extends IMinecraftService> {
 
-    protected IMinecraftService service;
+    protected T service;
 
-    public IMinecraftProvider(IMinecraftService service) {
+    public IMinecraftProvider(T service) {
         this.service = service;
     }
 
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/core/version/MinecraftClassicVersion.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/core/version/MinecraftClassicVersion.java
index 74ce888c5..9d7df9cc2 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/core/version/MinecraftClassicVersion.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/core/version/MinecraftClassicVersion.java
@@ -48,7 +48,7 @@ public class MinecraftClassicVersion extends MinecraftVersion {
     }
 
     @Override
-    public MinecraftVersion resolve(IMinecraftProvider manager, Set<String> resolvedSoFar) {
+    public MinecraftVersion resolve(IMinecraftProvider<?> manager, Set<String> resolvedSoFar) {
         return this;
     }
 
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/core/version/MinecraftVersion.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/core/version/MinecraftVersion.java
index 98d0d9775..5bd23d43a 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/core/version/MinecraftVersion.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/core/version/MinecraftVersion.java
@@ -122,11 +122,11 @@ public class MinecraftVersion implements Cloneable, Comparable<MinecraftVersion>
         }
     }
 
-    public MinecraftVersion resolve(IMinecraftProvider provider) throws GameException {
+    public MinecraftVersion resolve(IMinecraftProvider<?> provider) throws GameException {
         return resolve(provider, new HashSet<>());
     }
 
-    protected MinecraftVersion resolve(IMinecraftProvider provider, Set<String> resolvedSoFar) throws GameException {
+    protected MinecraftVersion resolve(IMinecraftProvider<?> provider, Set<String> resolvedSoFar) throws GameException {
         if (inheritsFrom == null)
             return this;
         if (!resolvedSoFar.add(id))
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/core/version/MinecraftVersionManager.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/core/version/MinecraftVersionManager.java
index e90dac523..f2f4493ca 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/core/version/MinecraftVersionManager.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/core/version/MinecraftVersionManager.java
@@ -50,7 +50,7 @@ import org.jackhuang.hmcl.util.ui.SwingUtils;
  *
  * @author huangyuhui
  */
-public class MinecraftVersionManager extends IMinecraftProvider {
+public class MinecraftVersionManager<T extends IMinecraftService> extends IMinecraftProvider<T> {
 
     final Map<String, MinecraftVersion> versions = new TreeMap<>();
 
@@ -58,7 +58,7 @@ public class MinecraftVersionManager extends IMinecraftProvider {
      *
      * @param p
      */
-    public MinecraftVersionManager(IMinecraftService p) {
+    public MinecraftVersionManager(T p) {
         super(p);
     }