randomint.java

来自「java2应用开发指南第一版」· Java 代码 · 共 15 行

import java.util.*;
class RandomInt 
{
    public static void main(String[] args) 
{
        Random r = new Random();
        System.out.println( r.nextInt() );
        System.out.println( r.nextInt() );
        System.out.println( r.nextInt(10) );
        System.out.println( r.nextInt(10) );
        // r.nextInt(-10);                      
// IllegalArgumentException
    } 
}