小编S.P*_*IBA的帖子

我有以下代码:

import java.util.*;
import java.io.*;
import java.util.*;
import java.io.*;

public class ShufflingListAndArray
{
   public static void main(String[] args) throws IOException
   {
   List <String> services = new ArrayList<String> (
   Arrays.asList("COMPUTER", "DATA", "PRINTER"));//here I have used List <String> services=new ArrayList<String>( Arrays.asList("COMPUTER", "DATA", "PRINTER"));// followed by next statement Satring s=Services.get(rnd.nextInt(Services.size()));

   String s = services.get(rnd.nextInt(services.size()));

   Collections.shuffle(list);
   //Collections.sort(list);
   System.out.println("List sorting :"+ list);
   }
} 

当我编译这个程序时,我收到以下错误:

C:\>javac ShufflingListAndArray.java
ShufflingListAndArray.java:6: '(' or '[' expected
    List<String> services = new ArrayList<String>(
                                         ^
1 error

有人可以帮我解决这个错误吗？

我收到以下错误.

import java.util.*;
import java.io.*;

public class ShufflingListAndArray
{
  public static void main(String[] args) throws IOException

{
    List services = 


    //Arrays.asList("COMPUTER", "DATA", "PRINTER");

 Arrays.asList(new String[] {"COMPUTER", "DATA", "PRINTER"}); 

   Random rnd=new Random();
  String s = services.get(rnd.nextInt(services.size()));

    Collections.shuffle(services);


    //Collections.sort(list);


    System.out.println("List sorting :"+ services);
  }
} 

编译上面的代码后,我得到以下错误.

C:\>javac ShufflingListAndArray.java
ShufflingListAndArray.java:17: incompatible types
found   : java.lang.Object
required: java.lang.String
  String s = services.get(rnd.nextInt(services.size()));
                         ^
1 error