How to use turbo module within java code

MainApplication.java

import com.facebook.react.ReactApplication ;
import com.facebook.react.bridge.ReactApplicationContext;
import com.facebook.react.ReactPackage;
import com.facebook.react.TurboReactPackage;
import com.facebook.react.bridge.NativeModule;
import com.facebook.react.module.model.ReactModuleInfo;
import com.facebook.react.module.model.ReactModuleInfoProvider;
import com.facebook.react.shell.MainReactPackage;


public class MainApplication implements ReactApplication {
  private final ReactNativeHost mReactNativeHost = new ReactNativeHost(this) {

    @Override
    protected String getJSBundleFile() {
      return CodePush.getJSBundleFile();
    }

    @Override
    public boolean getUseDeveloperSupport() {
      return BuildConfig.DEBUG;
    }

    @Override
    protected List<ReactPackage> getPackages() {
      return Arrays.<ReactPackage>asList(
          new MainReactPackage(),
          new TurboReactPackage() {
            @Override
            public abstract NativeModule getModule(String name, ReactApplicationContext : reactContext) {
              switch(name) {
                case MyCustomPackage.MODULE_NAME :
                    return MyCustomPackage(reactContext); 
                  default : 
                     throw IllegalArgumentException("Could not find module $name")
              }
            }
            
            @Override 
            public abstract ReactModuleInfoProvider getReactModuleInfoProvider {
              return ReactModuleInfoProvider { 
                Map<String, ReactModuleInfo> map = HashMap<String, ReactModuleInfo>() ;
                map.put(MyCustomPackage.MODULE_NAME, new ReactModuleInfo(MyCustomPackage.MODULE_NAME, "com.mypackagename.MyCustomPackage", false, false, false, false, true));
                return map; } ;
            }
    }

    @Override
    protected String getJSMainModuleName() {
      return "index";
    }
  };

  @Override
  public ReactNativeHost getReactNativeHost() {
    return mReactNativeHost;
  }

  @Override
  public void onCreate() {
    super.onCreate();
  }
}

Your code is not working.
It's half transform in Java.

new TurboReactPackage() {
                @Override
                public NativeModule getModule(String name, ReactApplicationContext reactContext) {
                  switch(name) {
                    case MyCustomPackage.REACT_CLASS :
                      return new MyCustomPackage(reactContext);
                    default :
                      throw new IllegalArgumentException("Could not find module $name");
                  }
                }

                @Override
                public ReactModuleInfoProvider getReactModuleInfoProvider() {
                  return new ReactModuleInfoProvider() {
                    @Override
                    public Map<String, ReactModuleInfo> getReactModuleInfos() {
                      Map<String, ReactModuleInfo> map = new HashMap<String, ReactModuleInfo>() ;
                      map.put(MyCustomPackage.REACT_CLASS, new ReactModuleInfo(MyCustomPackage.REACT_CLASS, "com.mypackagename.MyCustomPackage", false, false, false, false, true));
                      return map;
                    }
                  };

                }
              }