package coupon;
import java.util.Random;
public class Coupon {
public static void main(String[] args) {
int couponSize = 1000;
final char[] possibleCharacters =
{'1', '2', '3', '4', '5', '6', '7', '8', '9', '0', 'A', 'B', 'C', 'D', 'E', 'F',
'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U',
'V', 'W', 'X', 'Y', 'Z'};
final int possibleCharacterCount = possibleCharacters.length;
String[] arr = new String[couponSize];
Random rnd = new Random();
int currentIndex = 0;
int i = 0;
while (currentIndex < couponSize) {
StringBuffer buf = new StringBuffer(16);
for (i= 16; i > 0; i--) {
buf.append(possibleCharacters[rnd.nextInt(possibleCharacterCount)]);
}
String password = buf.toString();
System.out.println("password==>"+password);
arr[currentIndex] = password;
currentIndex++;
}
}
}
