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2020-10-24 10:23:28 +00:00
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Others/PasswordGen.java
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@ -1,47 +1,44 @@
package Others;
import java.util.Collections;
import java.util.Random;
import java.util.List;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Random;
/**
* Creates a random password from ASCII letters
* Given password length bounds
* Creates a random password from ASCII letters Given password length bounds
*
* @author AKS1996
* @date 2017.10.25
*/
class PasswordGen {
public static void main(String args[]) {
String password = generatePassword(8, 16);
System.out.print("Password: " + password);
public static void main(String args[]) {
String password = generatePassword(8, 16);
System.out.print("Password: " + password);
}
static String generatePassword(int min_length, int max_length) {
Random random = new Random();
String upper = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
String lower = "abcdefghijklmnopqrstuvwxyz";
String numbers = "0123456789";
String specialChars = "!@#$%^&*(){}?";
String allChars = upper + lower + numbers + specialChars;
List<Character> letters = new ArrayList<Character>();
for (char c : allChars.toCharArray()) letters.add(c);
// Inbuilt method to randomly shuffle a elements of a list
Collections.shuffle(letters);
StringBuilder password = new StringBuilder();
// Note that size of the password is also random
for (int i = random.nextInt(max_length - min_length) + min_length; i > 0; --i) {
password.append(letters.get(random.nextInt(letters.size())));
}
static String generatePassword(int min_length, int max_length) {
Random random = new Random();
String upper = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
String lower = "abcdefghijklmnopqrstuvwxyz";
String numbers = "0123456789";
String specialChars = "!@#$%^&*(){}?";
String allChars = upper + lower + numbers + specialChars;
List<Character> letters = new ArrayList<Character>();
for (char c : allChars.toCharArray())
letters.add(c);
// Inbuilt method to randomly shuffle a elements of a list
Collections.shuffle(letters);
StringBuilder password = new StringBuilder();
// Note that size of the password is also random
for (int i = random.nextInt(max_length - min_length) + min_length; i > 0; --i) {
password .append( letters.get(random.nextInt(letters.size())));
}
return password.toString();
}
return password.toString();
}
}