Java转成Scala

Java转成Scala

Java代码转换成Scala，常见的一些转换


转换：
SomeType.class ==> classOf[SomeType] 
Class<?>       ==> def read[UnknowType](classes: Set[Class[UnknowType]])
https://stackoverflow.com/questions/1135248/scala-equivalent-of-java-java-lang-classt-object

Java代码：
    public Swagger read(Set<Class<?>> classes) {
        // process SwaggerDefinitions first - so we get tags in desired order
        for (Class<?> cls : classes) {
            SwaggerDefinition swaggerDefinition = cls.getAnnotation(SwaggerDefinition.class);
            if (swaggerDefinition != null) {
                readSwaggerConfig(cls, swaggerDefinition);
            }
        }
        for (Class<?> cls : classes) {
            read(cls);
        }
        return swagger;
    }
    

Scala代码：
  def read[UnknowType](classes: Set[Class[UnknowType]]): Swagger = {
    for (cls: Class[UnknowType] <- classes) {
      val swaggerDefinition: SwaggerDefinition = cls.getAnnotation(classOf[SwaggerDefinition]) //in Java, SwaggerDefinition.class
      if (swaggerDefinition != null) {
        readSwaggerConfig(cls, swaggerDefinition)
      }
    }
    for (cls: Class[UnknowType] <- classes) {
      read(cls)
    }
    swagger
  }



转换：
使用JavaConverters和JavaConversions
尽量使用JavaConverters，它就是被设计用来代替JavaConversions的
http://docs.scala-lang.org/overviews/collections/conversions-between-java-and-scala-collections.html
https://stackoverflow.com/questions/11679016/java-scala-collection-conversions-scala-2-10

Java代码：