1. public interface Generator<T> {
   
2.         T next();
   
3. }

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1. import java.util.Random;
   
2. 
   
3. public enum Character implements Generator<Character>{
   
4.         SPANKY, BOUNCY, BOB;
   
5.        
   
6.         private Random random = new Random(7);
   
7. 
   
8.         //随机返回
   
9.         @Override
   
10.         public Character next() {
    
11.                 return values()[random.nextInt(values().length)];
    
12.         }
    
13. }

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1. public class EnumDemo_2 {
   
2.         //随机打印一个枚举值
   
3.         static <T> void print(Generator<T> g){
   
4.                 System.out.println(g.next());
   
5.         }
   
6.        
   
7.         public static void main(String[] args) {
   
8.                 Character character = Character.BOUNCY;
   
9.                 for (int i = 0; i < 5; ++i)
   
10.                         print(character);
    
11.         }
    
12. }

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1. public interface Generator<T> {
   
2.         T next();
   
3. }

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1. import java.util.Random;
   
2. 
   
3. public enum Character implements Generator<Character>{
   
4.         SPANKY, BOUNCY, BOB;
   
5.        
   
6.         private Random random = new Random(7);
   
7. 
   
8.         //随机返回
   
9.         @Override
   
10.         public Character next() {
    
11.                 return values()[random.nextInt(values().length)];
    
12.         }
    
13. }

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1. public class EnumDemo_2 {
   
2.         //随机打印一个枚举值
   
3.         static <T> void print(Generator<T> g){
   
4.                 System.out.println(g.next());
   
5.         }
   
6.        
   
7.         public static void main(String[] args) {
   
8.                 Character character = Character.BOUNCY;
   
9.                 for (int i = 0; i < 5; ++i)
   
10.                         print(character);
    
11.         }
    
12. }

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