java.util.Random.nextInt(int n) 方法

package com.codingdict;

import java.util.*;

public class RandomDemo {
   public static void main( String args[] ) {

      // create random object
      Random randomno = new Random();

      // check next int value  
      System.out.println("Next int value: " + randomno.nextInt(10000));
   }    
}