ListUtil java

添加链接描述

package com.mindskip.xzs.utility;

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

public class ListUtil {
//    void d(Object [] objects){
//        List lst =new ArrayList<>(Arrays.asList(new String[] { "zs", "ls", "ww" }));
//        List lst =new ArrayList<>(Arrays.asList(objects));
//    }
    public static <T> List<T> arrToArrayList(T... a) {
        List<T> lst =new ArrayList<>(Arrays.asList(a));
//        return new Arrays.ArrayList<>(a);
        return lst;
    }

    /**
     * list
     * [zs, ls, ww]
     * list
     * [zs, ls, ww, ddd]
     * @param args
     */
    public static void main(String[] args) {
//        new ArrayList{1,3,5}
        String[] strings=    new String[] { "zs", "ls", "ww" };
        List<String> list = ListUtil.arrToArrayList(strings);
        System.out.println("list");
        System.out.println(list);

        list.add("ddd");
        System.out.println("list");
        System.out.println(list);
//        list
//                [zs, ls, ww]
//        list
//                [zs, ls, ww, ddd]
    }
}

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