用java生成16位的UUID

Question

用java生成16位的UUID
用java生成16位的UUID

Answer 1

import java.util.UUID;

public class HelloWorld {
    public static void main(String []args) {
		int hashCodeV = UUID.randomUUID().toString().hashCode();
		if(hashCodeV < 0) {//有可能是负数
        	hashCodeV = - hashCodeV;
        }
       	System.out.println(String.format("%016d", hashCodeV));
    }
}