ArrayUtils工具类更加方便的操作数据

Posted 2020-12-24 coderdxj

不废话,上代码：

            

package com.jxd;

import org.apache.commons.lang3.ArrayUtils;

public class TestArr {
    /**
     * ArrayUtils 工具操作数组
     * <dependency>
     *           <groupId>org.apache.commons</groupId>
     *           <artifactId>commons-lang3</artifactId>
     *           <version>3.7</version>
     *        </dependency>
     * @param args
     */

    public static void main(String[] args) {
        String[] arr=new String[]{"a","b","c"};
        String[] arr1={"f","g"};
        System.out.println("数组合并");
        //数组合并
        String[] arrall = ArrayUtils.addAll(arr, arr1);
        for (int i=0;i<arrall.length;i++){
            System.out.println(arrall[i]);
        }
        System.out.println("数组倒转......");
        ArrayUtils.reverse(arr);
        for (String str: arr
             ) {
            System.out.println(str);
        }
        System.out.println("数组中元素删除");
        arr=ArrayUtils.remove(arr,1);
        for (String str: arr
                ) {
            System.out.println(str);
        }
        //ArrayUtils动态添加数组
        arr=ArrayUtils.add(arr,"applle");
        for (String str: arr ) {
            System.out.println(str);
        }
    }
}