如何在Java中比较两个不同的列表对象? [英] How to compare two different list object in java?

问题描述

我有两个类列表，例如 List< Aclass> A1和 List< Bclass> b1，并且两个列表都包含一个共同的字段.因此，通过使用此字段，我必须比较这两个列表?有人可以帮我吗?确保这些类别列表不同.

I have two class lists like List<Aclass> A1 and List<Bclass> b1 and both lists contain one field which is common. So by using this field I have to compare those two list? Please can anyone help me? Be ensure that those class lists are different.

推荐答案

我不确定我是否完全理解这个问题，但是您要的是这样的东西?

I'm not sure I fully understand the question, but you're asking for something like this?

public boolean compare (List<AClass> listA, List<BClass> listB) {
    if (listA.size() != listB.size () return false;
    for (int i=0; i<listA.size(); i++) {
        AClass aClass == (AClass) listA.get(i);
        BClass bClass == (BClass) listB.get(i);
        if (aClass.commonField != bClass.commonField) return false;
    }
    return true;
}

两个列表都应按该commonField字段排序

Both lists should be sorted by that commonField field

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