package com.day15.collection;
import java.util.ArrayList;
import java.util.Collection;
public class Array_toArray {
public static void main(String[] args) {
Collection c=new ArrayList();
c.add(1);//Support automatic boxing, in fact convert 1 to a string object
c.add("k" );
c.add("o");
Object[] arr=c.toArray();//Convert elements into an array
for (int i = 0; i < arr.length; i++) {
if(i== arr.length-1) {System.out.println(arr[i]);}//o
else {System.out.print(arr[i]+",");}//1,k,
}
}
}
//Finally output 1,k,o