对于较大的随机数,请在Java中使用BigInteger类型。首先,创建一个Random对象-
Random randNum = new Random();
现在,声明一个字节数组并生成随机字节-
byte[] b = new byte[max]; randNum.nextBytes(b);
现在,生成一个BigInteger类型的大随机数-
BigInteger bigInt = new BigInteger(b);
import java.math.BigInteger; import java.util.Random; public class Demo { public static void main(String... a) { int max = 10; Random randNum = new Random(); byte[] b = new byte[max]; randNum.nextBytes(b); //BigInteger类型 BigInteger bigInt = new BigInteger(b); System.out.println("Very large random number = "+bigInt); } }
输出结果
Very large random number = 283258678185163472552410