合并object的两个ArrayList，合并时有条件地改变object的值

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

public class ObjectMerger {
    public static void main(String[] args) {
        List<MyObject> list1 = new ArrayList<>();
        List<MyObject> list2 = new ArrayList<>();

        // 假设list1和list2已经初始化并包含了需要合并的对象

        List<MyObject> mergedList = mergeAndModifyObjects(list1, list2);

        // 打印合并后的结果
        for (MyObject obj : mergedList) {
            System.out.println(obj.toString());
        }
    }

    public static List<MyObject> mergeAndModifyObjects(List<MyObject> list1, List<MyObject> list2) {
        List<MyObject> mergedList = new ArrayList<>();

        // 遍历第一个ArrayList，将每个object复制到新的ArrayList中
        for (MyObject obj : list1) {
            mergedList.add(new MyObject(obj));
        }

        // 遍历第二个ArrayList
        for (MyObject obj : list2) {
            boolean found = false;

            // 检查是否存在于新的ArrayList中
            for (MyObject mergedObj : mergedList) {
                if (obj.getId() == mergedObj.getId()) {
                    found = true;

                    // 根据条件修改object的值
                    if (obj.getValue() > mergedObj.getValue()) {
                        mergedObj.setValue(obj.getValue());
                    }

                    break;
                }
            }

            // 如果不存在，将该object添加到新的ArrayList中
            if (!found) {
                mergedList.add(new MyObject(obj));
            }
        }

        return mergedList;
    }
}

class MyObject {
    private int id;
    private int value;

    public MyObject(int id, int value) {
        this.id = id;
        this.value = value;
    }

    // 复制构造函数
    public MyObject(MyObject obj) {
        this.id = obj.id;
        this.value = obj.value;
    }

    public int getId() {
        return id;
    }

    public int getValue() {
        return value;
    }

    public void setValue(int value) {
        this.value = value;
    }

    @Override
    public String toString() {
        return "MyObject{" +
                "id=" + id +
                ", value=" + value +
                '}';
    }
}