I am trying to take a password then generate two characters to keep in the password dataset. So far I have this going but keep having minor issues. For one how come it won't allow me to use List.length?
/*Code/*
import java.util.Scanner;
public class Project{
public static void main(String[] args){
System.out.println("Enter the password:");
}
[Code] .....
import java.util.Scanner;
public class PassCode
{
public static final String SPECIAL_CHARACTERS = "$,#";
public static void main(String[] args)
[Code] ....
I'm having trouble with the code using char[]c, for the special characters. Every thing else seems to work correctly, expect for the special characters.
I'm attempting a small program as I'm teaching myself the ropes. In it, I need to compare one string (the base) to another which is just the base string that's had it's characters shuffled.
Java Code:
String base = "ABCDEFG"
String shuffled = "CDAFBEG" mh_sh_highlight_all('java');
What I need to do is run a loop that shuffles the base string each time, but compares and saves any characters that match in the correct location. For example, if shuffled = "CDAFBEG", then the G would be "locked" in place and the rest of the characters shuffled and looped back to the comparison.
I have all the code I need for shuffling the string, but I'm not sure how I would go about comparing each character and then also locking it in place. I get the basics, I think, of needed to use several variables.
My homework is asking me to write a program that prompts the user to enter a password and displays "valid password" if the rule is followed or "invalid password"
Sample
enter a string for password: wewewx
valid password
It's being graded on
Design of my GUI
Dialog box
User friendliness
Creativity
My current issues with the current code I have written is simply the password doesn't work unless it starts with 2 digits, the other order it displays as wrong. and I have no idea how to add a GUI.
import java.util.*;
import java.lang.String;
import java.lang.Character;
[code]....
I've been tasked with processing a large dataset as part of a class assignment. One of the fields is a 24-digit unsigned hex number. I realized that, rather than storing the field verbatim in a char array of length 24, I could store the actual value of the hex number in an array only 6 chars long (I chose char over int because chars are unsigned). To do this, I wrote the following simple class to accept the hex string and convert it so that it can be stored in that manner:
private class Hex24
{
private final char[] hexAsInt = new char[6];
public Hex24(String h)
{
for(int index = 0; index < 6; ++index)
hexAsInt[index] = (char)Integer.parseUnsignedInt(h.substring(index * 4, (index + 1) * 4));
[Code] ....
Assuming all this works (haven't tested it, but I think it should), what I'm wondering is how much memory this will save me (if any) compared to just throwing everything into a char[24] array. The underlying char[6] is obviously quite a bit smaller, but objects must take up more space than just their fields since Java needs to know what kind of object it is so it can know what methods it has, etc..How to accurately compare the size of a Hex24 object to the size of a 24 character array.
I guess another option/thing I might want to compare size efficiency for is putting the char[6] along with the conversion/comparison logic directly into the classes (as fields/member methods) where I'm currently using Hex24 fields. I'd guess this is the most memory-efficient option I've come up with, but it would lead to a lot of code duplication.
Another thing I'd like to compare is the size of a String vs. the size of the equivalent char array for shortish text fields. If this difference is big enough it might be worth storing those fields as arrays rather than Strings.
I have a primefaces datatable with about 52000 records to be fetched.Since it is a large dataset,i tried using live scrolling feature of primefaces with scroll rows equal to 20.THe number of columns is 53.The table also has filtering and sorting feature on its each column.Still i am not satisfied with the performance of the table.It takes about 15 secs for the page to load,worst thing is that it takes about 65 secs for the next set of 20 records to be loaded on reaching the end of scrolling.
Just for testing i reduced the total number of records to 25000 and the preformance improves with scroll time of 29 secs.I am really not able to understand why it is taking this much time when i am displaying only 20 records at a time.The total number of records should not have affected the performance.
My JSF code snippet
<p:dataTable id="arcRecList" var="data"
value="#{archivedRecordBean.archiveItems}"
tableStyle="table-layout:auto; width:80%;" styleClass="datatable"
scrollable="true" scrollWidth="84%" scrollHeight="69%"
columnClasses="columnwidth" liveScroll="true" scrollRows="20"
filteredValue="#{archivedRecordBean.filteredArchiveItems}">
[Code] ....
username works perfectly, but when I enter password I get this error.
Java Code:
OKbtn.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
if(Usernametxt.getText().equals("Admin") &&
(Passwordfld.getPassword().equals("Admin2"))){
System.out.println("permition granted");
}else{
System.out.println("permition Rejected");
[code]....
I am new to JAVA GUI programming and was wondering how you go about getting and testing if a password field text equals something. For example, if the password equals "password" then do something.
View Replies View Related Why, when I write a right password and nickname, program says that is wrong?
public class Password {
private static String password = "1234";
private static String nick = "artem";
public static void main (String args[]){
JFrame frame = new JFrame("Password");
JPanel pan = new JPanel();
JLabel lab = new JLabel("Password");
JLabel lb1 = new JLabel("Nickname");
[code]....
I want to validate username and password in JavaScript. I want to validate username and password with database values. If login failed i want to display alert message...ok. But problem is that i have index.jsp page. After clicking login button control goes to homepage.
jsp..okk.. in index.jsp I have taken dropdown to show designation. I select design then control goes to respective homepage... in homepage. I am checking username and password with database values. If login successful it goes to respective pages but if login failed it has to show me alert message. How can i do that ?
i need to develop a java program in which it will ask the user "Username" and "Password" and by which it will login to a wesite.
I have developed a GUI in which the username should be entered in the User "JTextfield" and Password in Password "JPasswordField". I need to make sure that password should not be displayed in the GUI. but I didnt find a way to parse the string (char) entered in the "JPasswordField" to the website.
It is always passing a 'null' character! I tried to search in internet and i found that it wont be able to pass the passwordfield characters but you will be able to check in the main function itself by comparing with another char array in the main program itself whether the password entered is correct or not.
Is there any alternate way for this?
Objective : Parse the password (which is not displayed in the GUI) to a website or some other function where it will use it
I Have one query regarding OTP, In my project while registration the otp should be generate and send to the mobile number of user which is registered the form.
View Replies View RelatedI have a question but dont know how I could verify the criterias..
The password should be at least six characters long
The password should contain at least one uppercase and at least one lowercase letter
The password should have at least on digit
Write a class that verifies that a password meets the stated criteria. Demonstrate the class in a program that allows the user to enter a password and then displays a message indicating whether it is valid or not.
I have not created a class because I really have no clue what to write in this case. My main method is:
import java.util.Scanner; // Needed for the Scanner class
public class Password {
public static void main(String[] args) {
// Create a Scanner object to read input.
Scanner keyboard = new Scanner(System.in);
String input;// To hold the input
[Code] .....
It had no syntax error but if there would be any other error or if i would receive a wrong result
import java.util.*;
class tester {
public static void test() {
Scanner input=new Scanner(System.in);
int size= 0;
System.out.println("Enter your password:");
String enter=input.next();
size = enter.length();
[Code] .....
When I enter the wrong password, it says I have successfully logged in.
import javax.swing.JOptionPane;
public class P2H
{
public static void main (String[] args) {
System.out.println("LOGIN");
String usernameStr=JOptionPane.showInputDialog("Enter Username");
[Code] ....
Also I have to limit password attempts to 3. How would I go about that?
i have this source code...
import java.util.Scanner;
//I had to use scanner in this program because I had to create objects that were in the Scanner class, such as in row 16.
* This program confirms a password typed into a *
* console window *
*/
public class Homework1 {
public static void main(String[] args) {
//Needs to add a scanner to the program to continue on
Scanner keyboard = new Scanner(System.in);
[code]....
Now I need to create a second version of this program that uses JOptionPane to get the inputs from the user and show the output!
I am trying to get through JSF /PF tag for h:inputSecret but its not taking or displaying value. Please see the code snippet below
demo.xhtml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
[code]....
I am using JSF 2.2.
Use Java to write and run a simple console-window program for checking passwords. The program must satisfy the following requirements:
-When the program runs, it should first print its name, e.g., Password Checker
-The program should next prompt the user to enter a username, e.g.,
Please enter your username:
-The program should next prompt the user to enter a password, e.g., Please enter your password:
- If the user enters a correct password, i.e., one that matches an internal secret password, the program responds. You are approved by access control!, and quits.
-If the user enters an incorrect password, the program responds
Try again:
-If the user enters a correct password matching the secret one, the program responds. You are approved by access control!, and quits.
-If the user enters an incorrect password, the program responds
package class1;
import java.util.Scanner;
public class class1 {
public static void main(String[] args) {
// TODO Auto-generated method stub
[code]....
Keeping the passwords at 7 charactersHiding the "[object HTMLInputElement]" next to the passwordsMaking the "Clear" button work to clear the forum
<!DOCTYPE html>
<!-- passwordgenerator.html -->
<html lang="en">
[Code]....
I've made a login system with a username and a password. The password is visible and I wanna hide it, how do I do that? Here is my code (have used swing);
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class Password implements ActionListener {
private String Username = "hudhud";
private String Password = "fitness";
[Code] ......
package exercises;
import java.util.*;
public class Log_in_form {
static Scanner scan=new Scanner(System.in);
public static void main(String[] args) {
String username="rosas";
String password="sandy";
[Code] .....
The goal of this section of my assignment is to ask the user for a password. The password entered has to match the password I set in the code. If it is correct the next dialog box will pop up.
my password is set to:
String enterpwd = "";
String correctPassword = "Setpassword";
I am asked to use JOption, I completed as follows:
enterpwd = JOptionPane.showInputDialog(""............JOptionPane.QUESTION_MESSAGE);
then I use IF statements
if (enterpwd == correctPassword)
xyz = JOption .......();
I am getting an error "java.lang.NumberFormatException: For input string: """
I have to use wrapper class for this assignment. I need to know if my code is more like object oriented or not and am I using the wrapper class properly here? Let me know if I can make this code better.
I also need to know if I can mask this password input (STRING) using NetBeans/Eclipse IDE?
Password rule is as followed : Length of Password 8-12, with no special characters, including minimum one uppercase letter, and only one numeric value.
Java Code:
import java.util.Scanner;
public class Assignment1
{
private static String password=null;
private static void password_input()
[Code] .....
I have an encryption utility class. Can i use it some how to encrypt password before submitting form? I heard it can be done using applet.
View Replies View RelatedI am developing a number of Data Structures in Bluej. Iv created a nice little arraylist program, and want to add a password generator to this program. People are already prestored within the arraylist, and contain attributes such as ID, name, password, etc. I can search a persons name within the list and then view their ID, password, and encrypted password. I want to add a field which will show password strength, bare in mind the password is already stored within the program and will not be entered via the user.
I understand that this could be done via a regular expression, or using some count method where certain goals/sets of characters increase the count which determine strength.
Some web site offers feature of "remember user id/pwd" so next time when you access the same web site, it automatically pre fill out the user id field and or password field for you. How is this kind feature implemented ? I am not talking about the auto-complete function here.
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