ArrayList和数组间的相互转换

package test.test1; 

import java.util.Arrays; 
import java.util.List; 

public class Test { 
public static void main(String[] args) { 
String[] array=new String[3]; 
array[0]="王利虎"; 
array[1]="张三"; 
array[2]="李四"; 
List<String> list=Arrays.asList(array); 
for(int i=0;i<list.size();i++){ 
System.out.println(list.get(i)); 
} 


} 

 

  list转为String[]

 

package test.test1; 

import java.util.ArrayList; 
import java.util.List; 

public class Test { 
public static void main(String[] args) { 
List<String> list=new ArrayList<String>(); 
list.add("王利虎"); 
list.add("张三"); 
list.add("李四"); 
int size=list.size(); 
String[] array = (String[])list.toArray(new String[size]); 
for(int i=0;i<array.length;i++){ 
System.out.println(array[i]); 
} 
} 
}