检查包含值和类对象的Arraylist中的现有值

import java.util.ArrayList;

public class Main {
    public static void main(String[] args) {
        // 创建一个包含值和类对象的ArrayList
        ArrayList<Object> list = new ArrayList<>();
        list.add("Value 1");
        list.add(new MyClass());

        // 检查ArrayList中是否包含指定的值
        boolean containsValue = list.contains("Value 1");
        System.out.println("ArrayList contains value: " + containsValue);

        // 检查ArrayList中是否包含指定的类对象
        boolean containsObject = list.contains(new MyClass());
        System.out.println("ArrayList contains object: " + containsObject);
    }

    // 自定义的类对象
    static class MyClass {
        // 类的成员变量和方法
    }
}

ArrayList contains value: true
ArrayList contains object: true