Java generation of random numbers of alphanumeric combinations sample Java generation random number _java

Copy Code code as follows:

Package com.test;

Import Java.util.Random;

public class Generaterandomnumber {

public static void Main (string[] args) {

System.out.println ("Generated 10 is a random number:" + GETCHARANDNUMR (10));
}

/**
* Java generates random numbers and letter combinations
* @param length[Generate random number of lengths]
* @return
*/
public static String getcharandnumr (int length) {
String val = "";
Random Random = new Random ();
for (int i = 0; i < length; i++) {
Output letter or number
String charornum = random.nextint (2)% 2 = 0? "Char": "num";
String
if ("Char". Equalsignorecase (Charornum)) {
Get uppercase or lowercase letters
int choice = random.nextint (2)% 2 = 0? 65:97;
Val + = (char) (Choice + random.nextint (26));
else if ("num". Equalsignorecase (Charornum)) {//number
Val + + string.valueof (Random.nextint (10));
}
}
return Val;
}

}