java List与array互相转换

package cn.kge.one;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

public class Demo1 {
public static void main(String[] args) {
List<String> list = new ArrayList<String>();
list.add("a");
list.add("b");
list.add("c");
list.add("d");
list.add("e");
String[] strArray = list.toArray(new String[list.size()]);
for(String str:strArray){
System.out.println(str);
}
System.out.println("-------------------优美的分割线------------------");
String[] strings = {"1","2","3","4"};
List<String> content = Arrays.asList(strings);

for(String str:content){
System.out.println(str);
}
}
}