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Password Validator

✇Sugi
By: Sugirtha
23 October 2024 at 18:17
import java.util.Scanner;

public class PasswordValidator {

	public static void main(String[] args) {
		// PASSWORD MUST CONTAIN MIN 8 CHARS, MAX 12 CHARS, ATLEAST 1 UPPERCASE, 1 LOWERCASE, 1 DIGIT, 1 SPL CHAR 
		Scanner scn = new Scanner(System.in);
		int maxLen = 12, minLen=8;
		System.out.println("Enter a password to validate");
		String pwd = scn.next();
		scn.close();
		int n = pwd.length();
		if (n<minLen || n>maxLen) {
			System.out.println("Password length must be between 8 to 12 characters");
			return;
		}
		char[] pw = pwd.toCharArray();
		int cntLower=0, cntUpper=0, cntDigit=0, cntSpl=0;
		for (int i=0; i<n; i++) {
			char ch = pw[i];
			if (ch>='A' && ch<='Z') cntUpper++;
			else if (ch>='a' && ch<='z') cntLower++;
			else if (ch>='1' && ch<='9') cntDigit++;
			else if (ch=='!' || ch=='£' || ch=='$' || ch=='%' || ch=='^' || ch=='&' || ch=='*' || ch=='-' || ch=='_' || ch=='+' || ch=='=' || ch==':' || ch==';' || ch=='@'|| ch=='#'|| ch=='~'|| ch=='>'|| ch=='<'|| ch=='?'|| ch=='.') cntSpl++; 
		}
		if (cntLower>0 && cntUpper>0 && cntDigit>0  && cntSpl>0) System.out.println("Password is valid...");
		else {
			System.out.println("Password is NOT VALID");
			System.out.println("PASSWORD MUST CONTAIN ATLEAST 1 UPPERCASE, 1 LOWERCASE, 1 DIGIT AND 1 SPL CHAR FROM ! £ $ % ^ & * - _ + = : ; @ ~ # ?");
		}
	}

}

Task-Password Validation

✇Sugi
By: Sugirtha
9 October 2024 at 00:59

Code: TBD

<html>
    <head>
        <title> Password Validation </title>
        <style>
            body {
                background-color:black;
                color:green;
            }
            h1 {
                text-align:center;
                text-decoration:underline;
            }
           .inputTxt{
                color:black;
                background-color:lightgrey;
                border:green 2px solid;
                padding-left:10px;
                width:170px;
                height:24px;
                }
            .lbl {
                 padding:25px;
                 font-weight:bold;
                   
                }
            
            .button {
                background-color:lightgreen;
                color: black;
                border:2px solid green;
                border-radius:15px;
                font-size: 15px;
                vertical-align:9px;
                font-family:"sans-serief";
                font-variant:small-caps;
                font-weight:bold;
                width:170px;
                height:30px;
                text-align:center;
            }
            
        </style>
    </head>
    
    <body>
        <h1 > Password Validation </h1>
            <div align="center">
                <br>
                <form id="frmPw">
                    <table align="center">
                    <tr> 
                        <td> <label for = "idPw" class="lbl"> Password</label> </td>
                        <td> <input type="Password" name="namPw" id="idPw" class="inputTxt" placeholder="Pls enter the Password" minlength=8 maxlength=12>  </td>
                    </tr>
                    </table>
                <br><br>
                <input type="button" value="CLEAR" class="button" onclick="doClear()">&nbsp;&nbsp;
                <input type="submit" value="SUBMIT" class="button" onclick="validatePw()">
                </form>
            </div>
    </body>

    <script>
        function validatePw() {
            const pw = document.getElementById("idPw").value;
            var msg="";
            if (pw.length>12) msg += "Max 12 characters.  Limit exceeded....";
            else if (pw.length<8) msg += "Min 8 characters needed...";
            var containsNumbers = /\d/.test(pw); //TBD
            if (!containsNumbers) msg += "Atleast one digit expected    ";
            var containsUcaseAlphabet = /[A-Z]/.test(pw);  
            if (!containsUcaseAlphabet) msg+="Atleast one Upper Case Alphabet expected  ";
            var containsSpecial = /[!@#$%^&*]/.test(pw); 
            if (!containsSpecial) msg+="Atleast one Special Character expected";             
            if (msg  !== null && msg!='')  //TBD
            {
                alert(msg);
                return false;
            }
            else 
            {
                alert("Password Validation passed successfully...");
                return true;
            }
        }

        function doClear() {
            document.getElementById("frmPw").reset();      
        }
    </script>
</hmtl>

Output:

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