Java Arrays类

Arrays类

对数组a进行排序
Arrays.sort(a);

Arrays类重写了父类的tostring方法
System.out.println(Arrays.toString(a));

package com.java.test;

import java.util.Arrays;

public class TestArrays {
  
  public static void main(String[] args) {
    int[] a = new int[]{2,5,4,8};
    Arrays.sort(a);
    System.out.println(Arrays.toString(a));
  }
  
  

}