数组Array的类方法------打印数组、排序，填充

import java.util.Arrays;

public class Demo06 {
    public static void main(String[] args) {
         int[] a = {1,33,566,2,755,25};

         //打印数组元素 Array.toString
         //System.out.println(Arrays.toString(a));

        //Arrays.sort(a);//对数组进行排序
        //System.out.println(Arrays.toString(a));

        //对数组进行填充  Arrays.fill
        Arrays.fill(a,1,4,2);
        System.out.println(Arrays.toString(a));
    }
}