Java中 字符串，字符串数组，整型数组初始化

import java.util.*;
public class 字符串数组初始化 {
    public static void main(String[] args) {
        //字符串数组初始值为null,null,null,null
        String[] arr = new String[4];
        int[] arrInt = new int[4];
        System.out.println("从这里开始输出");
        //字符串数组无法初始化为""
        for(String s:arr){
            s=new String();
            System.out.print("字符串："+s+" ");
            System.out.print("字符数组："+arr[0]+" ");
            System.out.print("数组："+arrInt[0]+" ");
            //arr[0]==s  False
        }
    }
}