Question

我正在检索3个不同列表中的值列表，如下所示：

列表1打印出a,d,g 列表2打印出b,e,h 列表3打印出c,f,i

我希望将上述数据作为object返回，看起来像这样：

[{
A: a,
B: b,
C:c
},
A: d,
B: e,
C:f
},
A: g,
B: h,
C:i
}]

ArrayList<String> destList = new ArrayList<>();
ArrayList<String> resultList = new ArrayList<>();
ArrayList<String> statusList = new ArrayList<>();
//adding elements to all the three strings.
    for (int y = 0; y < foo.length() - 1; y++) {
      System.out.println("A"+":"destList.get(y)+",");
      System.out.println("B"+":"+resultList.get(y)+",");
      System.out.println("C"+":"+statusList.get(y));

    }

这会检索我的元素，但我不确定如何制作一个对象。我知道我的尝试太简陋了。我如何形成并返回这样的对象？

谢谢，

Answer 1

我认为这就是您所需要的。我已经为您的理解评论了代码

 import java.util.ArrayList;
 import java.util.List;

 public class demo {
 public static void main(String[]args){
    List<Integer>list1=new ArrayList<Integer>();
    List<Integer>list2=new ArrayList<Integer>();
    List<Integer>list3=new ArrayList<Integer>();
    ////here add your values to the list,i have not added them.You  first need to add the values to the list
    //then iterate through your list
    //create a list of your own custom class
    List<object>finallist=new ArrayList<object>();
    for (int i=0;i<list1.size();i++){
    finallist.add(newobject(list1.get(i),list2.get(i),list3.get(i)));//use new keyword to instantiate or  create a reference of a new object
    }
    //now your finallist contains your required data
}
  static class object{//create your custom class
  int A,B,C;

  public object(int a, int b, int c) {define a constructor
      A = a;
      B = b;
      C = c;
     }
   }
 }

从值列表创建的对象

1 个答案: