java:随机数

package xun;

import java.util.Random;

public class Myclass1 {
	public static int GetVenNum1(double num1,double num2)
	{
		int s=0;
		for(int i=0;i<=8;i++)
		{
		 s=(int)num1+(int)(Math.random()*num2);
		 System.out.println(s);
		}
		return s;
	} 
	public static int GetVenNum2(double num1,double num2)
	{
		int s=(int)num1+(int)(Math.random()*(num2-num1));
		if(s%2==0)
		{
          return s;
		}
		else
			return s+1;
	}
	public static int GetVenChar(char char1,char char2)
	{
		return (char)char1+(char)(Math.random()*(char2-char1));
	}
    public static void main(String[] args) {
    System.out.println("-------------------Matn类中的random()方法-------------------------------");
    //生成[2,32)范围内的随机数
	System.out.println("GetVenNum生成随机数："+GetVenNum1(2,32));
	//生成[2,32]范围内的随机偶数
	System.out.println("GetVenNum生成随机数："+GetVenNum1(2,32));
	System.out.println("-------------------Matn类中的random()方法-------------------------------");
	//生成随机字符
	System.out.println("GetVenNum生成随机数："+GetVenNum1('a','z'));
	System.out.println("-------------------Random类-------------------------------");
	Random r=new Random();
	System.out.println("随机生成整数："+r.nextInt());
	System.out.println("随机生成一个[0,12)的整数"+r.nextInt(12));
	System.out.println("随机生成一个布尔型的值"+r.nextBoolean());
	System.out.println("随机生成一个[0,12)的整数"+r.nextDouble());
	System.out.println("随机生成一个[0,12)的整数"+r.nextFloat());
	
	}
}