Question

我尝试过研究，看看能找到什么。我遇到了每个方法的问题。我正在做的是制作一个双数组，并尝试迭代每个数组的每个元素。我一直收到错误*检测到编译错误

行：23 class，interface或enum expected *

我面临的另一个问题是为什么这个方法失败的概念，我的逻辑错在哪里？我很感激你花时间阅读这篇文章，因为我正在努力学习一些基础知识。

public class HelloWorld {
  public static void main(String[] args) {
       System.out.println("Hello World");
       String[][]nameAdress={{"kn", "vilon"},{"new house","old house"}};
       meth(nameAdress);
  }

  public static void meth(String[][] name){
       for(String[] names: name){
          for(String field: names){
            System.out.println(names);
          }
       }
  }
}

Answer 1

你混淆了foreach循环头部的顺序

public class HelloWorld {
  public static void main(String[] args) {
    System.out.println("Hello World");



    String[][]nameAdress={{"karn dhillon", "vinny dhillon"},{"new house","old house"}};
    meth(nameAdress);
  }

  public static void meth(String[][] name){
    for(String[] element: name){
     for(String eachElement: element){
      System.out.println(eachElement);
     }
    }

  }

}

Answer 2

将您的代码更改为此，现在工作正常

public class HelloWorld {
public static void main(String[] args) {
System.out.println("Hello World");

String[][]nameAdress={{"karn dhillon", "vinny dhillon"},{"new house","old house"}};
meth(nameAdress);
}

public static void meth(String[][] name){
    for(String[] element: name){
        for(String field: element){
            System.out.println(field);
}
}
}
}

每个循环的Java noob

2 个答案: