JAVA小练习124——数组和集合的相互转换

import java.util.*;

public class Demo124 {

	public static void main(String[] args) {
	
		System.out.println("-----数组转集合-----");
        String[] strs1 = {"1", "2", "3"};
        List<String> list=Arrays.asList(strs1);
		System.out.println(list);
        
		
        System.out.println("---集合转数组-----");
		/*
		 * List<String> numbers = new ArrayList<String>(); numbers.add("1");
		 * numbers.add("2"); numbers.add("3");
		 */
        String[] strs2 = new String[list.size()];

        list.toArray(strs2);

        
        System.out.println(Arrays.toString(strs2));
        

	}

}