下面是一个完整的Java程序示例,演示如何生成1到100之间的随机整数: importjava.util.Random;publicclassRandomNumberExample{publicstaticvoidmain(String[]args){// 创建一个Random对象Randomrandom=newRandom();// 生成1到100之间的随机数intrandomNumber=random.nextInt(100)+1;// 输出生成的随机数System.out.print...
pku.wuyu.io; import java.util.Random; public class Demo01 { public static void main(String[] args) { //创建对象 Random r = new Random(); for(int x=1; x<=10; x++) { //获取随机数 int number = r.nextInt(10); System.out.println("number:"+number); } System.out.println("--...
java复制代码public static double random() { return RandomNumberGeneratorHolder.randomNumberGenerator.nextDouble(); } private static final class RandomNumberGeneratorHolder { static final Random randomNumberGenerator = new Random(); } 通过Math.random()的源码可以发现：Math.random() 的实现其实...
Methods declared in class java.lang.Object clone,equals,finalize,getClass,hashCode,notify,notifyAll,toString,wait,wait,wait Constructor Detail Random public Random() Creates a new random number generator. This constructor sets the seed of the random number generator to a value very likely to be di...
Here’s how you can use it to generate a basic random number: importjava.util.Random;Randomrand=newRandom();intnumber=rand.nextInt();System.out.println(number);#Output:#[Randominteger] Java Copy In this code snippet, we first import thejava.util.Randomclass. Then we create a new instanc...
importjava.util.Random;publicclassRandomNumberGenerator{publicstaticvoidmain(String[]args){Randomrandom=newRandom();longrandomNumber=(long)random.nextInt(900000000)+100000000;StringrandomString=String.valueOf(randomNumber);System.out.println("生成的16位随机数为:"+randomString);}} ...
import java.util.Random; public class RandomRangeExample { public static void main(String[] args) { Random rand = new Random(); // 指定范围为1到100 int min = 1; int max = 100; int randomNumber = rand.nextInt(max - min + 1) + min; System.out.println("随机数: " + randomNumber...
Java random() 方法 Java Number类 random() 方法用于返回一个随机数,随机数范围为 0.0 =< Math.random < 1.0。 语法 staticdoublerandom() 参数 这是一个默认方法,不接受任何参数。 返回值 该方法返回 double 值。 实例 publicclassTest{publicstaticvoidmain(Stringargs[]){System.out.println(Math.random()...
**/publicclassRandomNumber01 {publicstaticvoidmain(String[] args) {//创建一个 Random 对象Random random =newRandom();intrandomNumber;do{//生成4到11之间的随机数(包含4和11)randomNumber = random.nextInt(8) + 4; }while(randomNumber == 4 || randomNumber == 11);/*** 通过一个do-while循...
import java.util.Random; public class Main { public static void main(String[] args) { Random random = new Random(); int randomNumber = random.nextInt(100); // 生成一个0到99之间的随机整数 System.out.println("Random number: " + randomNumber); double randomDouble = random.nextDouble();...