第6章 数组 替换数组

package six;

import java.util.Arrays;

public class Sixoneseven {
    public static void main(String[] args){
        String arr[]=new String[]{"1","2","3","4"};
//        for(int i=0;i<arr.length;i++){
//            System.out.print(" "+arr[i]);
//        }
        for(String str:arr){
            System.out.print(" "+str);
        }
        Arrays.fill(arr,2,3,"bb");
        System.out.println();
        for(String str2:arr){
            System.out.print(" "+str2);
        }
    }
}