/**
* Generates alpha numeric random number for the given length.
* for this it accounts lowercase alpha characters(a-z) and numbers(0-9)
* @param length length of the alpha numeric random to be generated.
* @return resulting random alpha numeric string for the given length.
*/
public static String getAlphaNumbericRandom(int length) {
//include lower case alpha(a-z) and numbers(0-9)
String chars = "abcdefghijklmnopqrstuvwxyz0123456789";
int numberOfCodes = 0;//controls the length of alpha numberic string
String code = "";
while (numberOfCodes < length) {
char c = chars.charAt((int) (Math.random() * chars.length()));
code += c;
numberOfCodes++;
}
System.out.println("Code is :" + code);
return code;
}
If we want to create 6 digit apha numberic random means we have call getAlphaNumbericRandom methods as
getAlphaNumbericRandom(6);
