如何检查数组列表是否包含特定字符串 [英] How do i check if an Array List contains a certain string

问题描述

我在这里查看过，但是我得到的并没有真正起作用.这是运行的代码，但是没有按照我的期望做

I've looked on here and what i got did not really work. Here is the code which runs but it's not doing what i expect it to do

package bcu.gui;

import java.util.ArrayList;
import java.util.Arrays;

public class compare {

    private static ArrayList<String> list = new ArrayList<String>();

    public static void main(String[] args) {
        list.add("Paul");
        list.add("James");

        System.out.println(list); // Printing out the list

        // If the list containsthe name Paul, then print this. It still doesn't print even though paul is in the list
        if(Arrays.asList(list).contains("Paul")){
            System.out.println("Yes it does");
        }

    }

}

推荐答案

您不必这样做:

if(Arrays.asList(list).contains("Paul"))

因为标识符list已经是ArrayList

您需要这样做:

if(list.contains("Paul")){
    System.out.println("Yes it does");
}

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