Java - ArrayList 项转换为每个字符串并传递给另一个方法

Question

这是我的方法，它有两个带有 arrayList 的参数

private static PriorityInfo getPrioritiesInfo(ArrayList priorityNumber ,ArrayList priorityDate) {
        PriorityInfo priorityInfo = new PriorityInfo();
        ArrayList temp = new ArrayList();
        for(int i=0;i<priorityNumber.size();i++){          
            priorityInfo.setPriorityNo(toString(priorityNumber.get(i)));            
        }       

        //priorityInfo.setPriorityDate(priorityDate);
        return priorityInfo;
    }

我的预期:

在priorityNumber数组列表中有n个项目(即786975,293AS45)，我想将每个项目传递给setPriorityNo方法

上述方法产生错误

method toString in class Object cannot be applied to given types;
  required: no arguments
  found: Object
  reason: actual and formal argument lists differ in length

setPriorityNo 方法来自 PriorityInfo.class:

 public void setPriorityNo(String priorityNo) {
        this.priorityNo = priorityNo;
    }

让我知道我的错误

Answer 1

您没有正确转换为字符串。您指的是 Object 类中的 toString 方法。

尝试这样的事情:

private static PriorityInfo getPrioritiesInfo(ArrayList priorityNumber, ArrayList priorityDate) {
    PriorityInfo priorityInfo = new PriorityInfo(new ArrayList());
    ArrayList temp = new ArrayList();
    for(int i=0;i<priorityNumber.size();i++){
        priorityInfo.setPriorityNumbers(priorityNumber.get(i).toString());
    }

    //priorityInfo.setPriorityDate(priorityDate);
    return priorityInfo;
}

对您传递的 ArrayListpriorityNumber 调用 .toString() 方法。

和您的 PriorityInfo 类:

class PriorityInfo {

    private ArrayList priorityNumbers;

    public PriorityInfo(ArrayList priorityNumbers) {
        this.priorityNumbers = priorityNumbers;
    }

    public void setPriorityNumbers(String priorityNo) {
        this.priorityNumbers.add(priorityNo);
    }

    public ArrayList getPriorityNumbers() {
        return this.priorityNumbers;
    }

}

不知道您的 PriorityInfo 类中还有哪些其他方法。