package util;

import java.util.Random;

public class RandomStringCreator {

public static char[] alphabets =

{'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',

'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'};

public String createIgnoreCase(int length) {

return create(length, alphabets.length);

}

public String createLowerCase(int length) {

return create(length, 26);

}

public String createUpperCase(int length) {

return createLowerCase(length).toUpperCase();

}

private String create(int length, int module) {

char[] cs = new char[length];

Random random = new Random();

for(int i=0; i<cs.length; i++) {

cs[i] = alphabets[random.nextInt(module)];

}

return String.valueOf(cs);

}

}