随机数生成工具
import java.util.Random;
/**
* 功能描述:随机数生成工具
*
* @author bin
* @date 2017-06-13
*/
public class RandomCodeUtil {
private static final char[] codeSequenceRandom = {'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', '1', '2', '3', '4',
'5', '6', '7', '8', '9', '0'};
private static final char[] numberSequenceRandom = {'1', '2', '3', '4', '5', '6', '7', '8', '9', '0'};
/**
* 功能描述:生成字符串随机数
*
* @return String
*/
public static String createRandomCode(int count) {
String serialNum = "";
Random random = new Random();
for (int i = 0; i < count; i++) {
String strRand = String.valueOf(codeSequenceRandom[random.nextInt(codeSequenceRandom.length)]);
serialNum += strRand;
}
return serialNum;
}
/**
* 生成数字随机数
*
* @param count
* @return
*/
public static String createRandomNum(int count) {
String serialNum = "";
Random random = new Random();
for (int i = 0; i < count; i++) {
String strRand = String.valueOf(numberSequenceRandom[random.nextInt(numberSequenceRandom.length)]);
serialNum += strRand;
}
return serialNum;
}
public static void main(String[] args) {
String code = RandomCodeUtil.createRandomCode(15);
String num = RandomCodeUtil.createRandomNum(15);
System.out.println(code);
System.out.println(num);
}
}
运行结果
AECHG4TRGNY4P4W
474341889602516