Random随机生成几位数字和UUID随机生成几位字母加数字组合
public class TestRandom {
public static void main(String[] args) {
Random random = new Random();
StringBuilder sb = new StringBuilder(10);
for (int i = 0; i < 10; i++) {
sb.append((char) ('0' + random.nextInt(10)));
}
System.out.println("随机的10位数字："+sb.toString());
String aString = UUID.randomUUID().toString().replace("-", "");
System.out.println("UUID随机32位字母加数字: "+aString);
}
}
