java判断list集合里的属性值是否与传入值相等_java根据list中的对象的属性值是否相等

import lombok.Data;

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

@Data
public class MyTest {
    public String name;
    public String sex;

    public MyTest(String name, String sex) {
        this.name = name;
        this.sex = sex;
    }

    public static void main(String[] args) {
        List<MyTest> list = new ArrayList();
        list.add(new MyTest("小明","男"));
        list.add(new MyTest("小红","女"));
        list.add(new MyTest("小丽","女"));
        System.err.println("==="+list.size());

        String param = "小明";
        //法1：判断list集合里的属性值是否与传入值相等
        for (MyTest test : list) {
            if (test.getName().equals(param)){
                System.err.println(test+"名字重复");
            }
        }

        //法2：判断list集合里的属性值是否与传入值相等
        if (list.size() > 0){
            boolean flag = list.stream().anyMatch(obj -> obj.getName().equals(param));
            if (flag){
                System.err.println("名字重复--");
            }
        }
    }
}
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