以下是一个使用Math.random方法获取范围为[min, max]的随机double值的示例代码: publicclassRandomDoubleGenerator{publicdoublegetRandomDoubleInRange(doublemin,doublemax){returnmin+(max-min)*Math.random();}publicstaticvoidmain(String[]args){RandomDoubleGeneratorgenerator=newRandomDoubleGenerator();doublerandomD...
importjava.util.Random;publicclassRandomUtils{publicstaticvoidmain(String[]args){doublerandomValue=getRandomDouble(10,20);System.out.println(randomValue);}publicstaticdoublegetRandomDouble(doublemin,doublemax){Randomrandom=newRandom();doublerandomValue=random.nextDouble();doubleresult=min+(randomValue*(ma...
publicstaticdoublerandom(){Random rnd=randomNumberGenerator;if(rnd==null)rnd=initRNG();// 第一次调用,创建一个伪随机数生成器returnrnd.nextDouble();}privatestaticsynchronized RandominitRNG(){Random rnd=randomNumberGenerator;return(rnd==null)?(randomNumberGenerator=newRandom()):rnd;// 实际上用的是...
println("随机小数:" + randomNum); // 生成一个指定范围的随机小数 double min = 10.0; double max = 20.0; double randomNumInRange = min + (max - min) * random.nextDouble(); System.out.println("指定范围的随机小数:" + randomNumInRange); } } 复制代码 在上述代码中,random.nextDouble()方...
@Test public void givenUsingApache_whenGeneratingRandomDoubleUnbounded_thenCorrect() { double generatedDouble = new RandomDataGenerator().getRandomGenerator().nextDouble(); } 8. Generate a Double Within a Range 8.1. Random Bounded Double With Plain Java In this example, let’s take a look at ...
Learn to generate random numbers (integer,float,longordouble) in a specified range (originandbound) using new methods added inJava 8inRandom,SecureRandomandThreadLocalRandomclasses. Quick Reference privatefinalstaticRandomRANDOM=newRandom();Integerr1=RANDOM.nextInt(0,100);//A random number between ...
1. java.util.Random This Random().nextInt(int bound) generates a random integer from 0 (inclusive) to bound (exclusive). 1.1 Code snippet. For getRandomNumberInRange(5, 10), this will generates a random integer between 5 (inclusive) and 10 (inclusive). ...
因为 Random 类使用的种子是 48bits,所以 nextLong 不能返回所有可能的 long 值,long 是 64bits。 </blockquote> 生成有边界的 Long @Test public void testRandom_generatingLongBounded_withRange() throws Exception { long min = 1; long max = 10; long...
2. 生成随机整数：Random类中的ne某tInt(方法可以用来生成一个指定范围内的随机整数。例如，生成一个0到10之间的随机整数：int randomNumber = rand.ne某tInt(10);。3. 生成随机浮点数：使用Random类中的ne某tDouble(方法可以生成一个0到1之间的随机浮点数。例如，生成一个0到1之间的随机浮点数：double random...
util.Scanner; public class PlayGame{ public static void main(String[] args){ Random random = new Random(); int number = random.nextInt(100)+1; while(true){ System.out.println("请输入您要猜的数字:"); Scanner scanner = new Scanner(System.in); int input = scanner.nextInt(); if(...