Passay - lllegalCharacterRule

lllegalCharacterRule helps allows to specify the characters which are not allowed in a password.

Example - Validating Password as per Illegal Character Rule

The below example shows validation of an invalid password as per Illegal Character Rule.

PassayDemo.java

package com.tutorialspoint;

import org.passay.IllegalCharacterRule;
import org.passay.NumberRangeRule;
import org.passay.PasswordData;
import org.passay.PasswordValidator;
import org.passay.RuleResult;
import org.passay.WhitespaceRule;

public class PassayDemo {
   public static void main(String[] args) {
      //Rule: Special characters like &, <, > are not allowed in a password 
      IllegalCharacterRule illegalCharacterRule 
         = new IllegalCharacterRule(new char[] {'&', '<', '>'});

      //Rule: 1 to 5 numbers are not allowed
      NumberRangeRule numberRangeRule = new NumberRangeRule(1, 5);

      //Rule: White spaces are not allowed
      WhitespaceRule whitespaceRule = new WhitespaceRule();

      PasswordValidator validator 
         = new PasswordValidator(illegalCharacterRule,numberRangeRule,whitespaceRule);
      PasswordData password = new PasswordData("abc&4d  ef6");
      RuleResult result = validator.validate(password);

      if(result.isValid()){
         System.out.println("Password validated.");
      }else{
         System.out.println("Invalid Password: " + validator.getMessages(result));            
      }
   }
}

Output

Compile and run the code to verify the result −

Invalid Password: [Password contains the illegal character '&'., Password contains the number '4'., Password contains a whitespace character.]

Example - Validating a Valid Password as per Illegal Characters Rule.

The below example shows validation of a valid password as per Illegal Characters Rule.

PassayDemo.java

package com.tutorialspoint;

import org.passay.IllegalCharacterRule;
import org.passay.NumberRangeRule;
import org.passay.PasswordData;
import org.passay.PasswordValidator;
import org.passay.RuleResult;
import org.passay.WhitespaceRule;

public class PassayDemo {
   public static void main(String[] args) {
      //Rule: Special characters like &, <, > are not allowed in a password 
      IllegalCharacterRule illegalCharacterRule 
         = new IllegalCharacterRule(new char[] {'&', '<', '>'});

      //Rule: 1 to 5 numbers are not allowed
      NumberRangeRule numberRangeRule = new NumberRangeRule(1, 5);

      //Rule: White spaces are not allowed
      WhitespaceRule whitespaceRule = new WhitespaceRule();

      PasswordValidator validator 
         = new PasswordValidator(illegalCharacterRule,numberRangeRule,whitespaceRule);
      PasswordData password = new PasswordData("abcdefg");
      RuleResult result = validator.validate(password);

      if(result.isValid()){
         System.out.println("Password validated.");
      }else{
         System.out.println("Invalid Password: " + validator.getMessages(result));            
      }
   }
}

Output

Compile and run the code to verify the result −

Password validated.