import java.util.*;
class ArraysDemo
{
public static void main(String[] args){
}
// 数组变字符串
public static void ArraysToString(){
String[] str = {"afdsa","sdaf","fdaf"};
String str1 = Arrays.toString(str);
System.out.println(str1);
}
//数组变List集合
public static void aslistDemo(){
String[] str = {"afdsa","sdaf","fdaf"};
List<String> list = Arrays.asList(str);
Iterator it = list.iterator();
while(it.hasNext()){
String str1 = (String)it.next();
System.out.println(str1);
}
}
//集合变数组
public static void toArrayDemo(){
List<String> list = new ArrayList<String>();
list.add("hkds");
list.add("lkjn");
list.add("mfsi");
list.add("oesj");
String[] str = list.toArray(new String[list.size()]);
System.out.println(Arrays.toString(str));
}
} |
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