publicclassRandomNumberGenerator{// ... 其他代码 ...publicstaticvoidmain(String[]args){intlength=10;// 指定生成的随机数长度intrandomNumber=generateRandomNumber(length);StringnumberString=convertToString(randomNumber);StringformattedString=formatString(numberString,length);System.out.println("定长随机数:"+...
import java.util.Random; public class GenerateRandomNumber { public static void main(String[] args) { Random random = new Random(); int min = 5; int max = 15; // 生成min到max之间的随机整数 int randomNumber = random.nextInt(max - min + 1) + min; System.out.println("Random number...
* Output: 0 到200之间的随机数*/importjava.util.*;classGenerateRandomNumber {publicstaticvoidmain(String[] args) {intcounter; Random rnum=newRandom();/*下面代码将会产生5个2到200之间的随机数*/System.out.println("Random Numbers:"); System.out.println("***");for(counter = 1; counter <=...
Random rnd = randomNumberGenerator; return(rnd ==null) ? (randomNumberGenerator =newRandom) : rnd;// 实际上用的是new java.util.Random } This method is properly synchronized to allow correct use by more than one thread. However, if many threads need to generate pseudorandom numbers at a g...
However, if many threads need to generate pseudorandom numbers at a great rate, it may reduce contention for each thread to have its own pseudorandom-number generator. initRNG() 方法是 synchronized 的,因此在多线程情况下,只有一个线程会负责创建伪随机数生成器(使用当前时间作为种子),其他线程则利用...
publicclassRandomNumberGeneration{publicstaticvoidmain(String[] args){doublemin =1;doublemax =67;/* Generate random number with in given range */doublerandom = (int)(Math.random() * ((max - min) +1)); System.out.println(random); ...
We can generate random bytes and place them into a user-supplied byte array using Random class. The number of random bytes produced is equal to the length of the byte array. Random random = new Random(); byte[] randomByteArray = new byte[5]; ...
Random rnd = randomNumberGenerator; return (rnd == null) ? (randomNumberGenerator = new Random()) : rnd; // 实际上用的是new java.util.Random() } This method is properly synchronized to allow correct use by more than one thread. However, if many threads need to generate pseudorandom n...
This method is properly synchronized to allow correct use by more than one thread. However, if many threads need to generate pseudorandom numbers at a great rate, it may reduce contention for each thread to have its own pseudorandom-number generator. ...
This method is properly synchronized to allow correct use by more than one thread. However, if many threads need to generate pseudorandom numbers at a great rate, it may reduce contention for each thread to have its own pseudorandom-number generator. ...