如何在 java class 中傳遞參數，如 kotlin

Question

I'm trying to implement unit test in old java project but trying to learn it from Kotlin course cause most of android tutorials now are in Kotlin, the course use Kotlin class this way how I do the same with java

@Module
open class ApiModule {
 @Provides
  fun provideApi(): Api {
    return Retrofit.Builder()
      .baseUrl(Constants.BASE_URL)
      .addConverterFactory(GsonConverterFactory.create())
      .addCallAdapterFactory(RxJava2CallAdapterFactory.create())
      .build()
      .create(Api::class.java)
  }
@Provides
  open fun provideApiService(): ApiService {
     return ApiService()
  }
}

問題是如何在 java 中生成下一個 class ApiModuleTest？

class ApiModuleTest(val mockService: ApiService): ApiModule() {
   override fun provideApiService(): ApiService {
      return mockService
    }
}

Answer 1

這個定義

class ApiModuleTest(val mockService: ApiService): ApiModule() {
    override fun provideApiService(): ApiService {
        return mockService
    }
}

大致翻譯為

class ApiModuleTest extends ApiModule {
    final ApiService mockService;

    ApiModuleTest(ApiService mockService) {
        this.mockService = mockService);
    }

    @Override
    public ApiService provideApiService() {
        return mockService;
    }
}

參考見：

• https://kotlinlang.org/docs/classes.html
• https://kotlinlang.org/docs/inheritance.html