学步园

java生成随机整数的不同方法总结，具体看下面代码：

import java.security.SecureRandom;<br /> import java.util.Random;<br /> /**<br /> * aiguoxin 2010-10-20下午01:35:13<br /> *<br /> * 随机数产生总结<br /> */<br /> public class Radom {<br /> public static void main(String[] args) {<br /> // Math.random()方法<br /> for (int i = 0; i < 10; i++) {<br /> System.out.print((int)(Math.random()*100) + " ");<br /> } System.out.println("/n" + "-----------------------------");<br /> // 不带种子，每次的随机数不同<br /> Random rand = new Random();<br /> for (int i = 0; i < 10; i++) {<br /> System.out.print(rand.nextInt(100) + " ");<br /> }<br /> System.out.println("/n" + "-----------------------------");<br /> // 带种子，每次的随机数相同<br /> Random rand2 = new Random(10);<br /> for (int i = 0; i < 10; i++) {<br /> System.out.print(rand2.nextInt(100) + " ");<br /> }<br /> System.out.println("/n" + "-----------------------------");<br /> // 生成完全不重复的随机数<br /> SecureRandom random = new SecureRandom();<br /> for (int i = 0; i < 10; i++) {<br /> System.out.print(random.nextInt(100) + " ");<br /> }<br /> }<br /> }