Question

我知道这个问题被问了很多次，但我真的不明白我为什么要面对这个问题。博客和帖子中提供的答案已在我的代码中实现，我仍然面临这个问题（或者我仍然无法弄清楚为什么我的代码编译失败）

public class Utilities {
   public Client client = null;
   private static object x = null;

   public Utilities(Client client) throws Exception {
      this.client = client;
      //CODE GOES HERE
   }
}

我在其他文件中调用此类，Utilities utile = new Utilities(client); 当我编译这段代码时，我遇到了错误，

constructor Utilities in class Utilities cannot be applied to given types
required: no arguments
found: Client
reason: actual and formal argument lists differ in length

经过几个论坛帖子和博客后，我添加了默认承包商，现在我的代码看起来像，

public class Utilities {
   public Client client = null;
   private static object x = null;

   private Utilities() {
      super();
      // TODO Auto-generated constructor stub
   }

   public Utilities(Client client) throws Exception {
      this.client = client;
      //CODE GOES HERE
   }
}

但仍然是同样的错误。任何线索我在这里做错了什么。

Answer 1

试试这段代码并告诉我：

public class Utilities {
   private Client client;
   private Object x;

   //this is the normal structure of a constructor in java classes
   public Utilities(Client client){
      this.client = client;
      //CODE GOES HERE
   }
}

构造函数 - 不能应用于给定类型 - 必需：无参数

1 个答案: