I have a programming assignment in which I have to make a program which loads a crossword from a Properties file and then, when the user press a button, the program checks if the letters the user has typed in the interface are the same as in the correct matrix. If all the letters from a word are correct, the program must paint every letter of the word green.
I'm using two matrix, one that is called "mundo" (I 'm from Latin America) , which has the correct letter for each box. The other one is a JtextField matrix which ='ve created using a Gridllayout. I called this one crucigrama (crossword in Spanish)
This is the code I wrote to validate: So you can understand, here is a translation:
numero = number
fila = row
column = columna
bien - a boolean I used to check if the letter I've checked before are the same as the correct ones
.darLetra() - returns a string with the correct letter
How to write a program that will verify the correctness of a person`s birth date in java. The birth date is to be typed in by the user. the program should verify the following: Birth date entered should be of type java.util.Date(), Birth date may not be in future, Age may not exceed 110 years.
//checks wether an int is prime or not public static void main(String[] args) { int n = 17; boolean prime = true; if (!(n==2)) { for (int i = 2; i * i <= n; i++) { if (n % i == 0);
Suppose i have a string which has certain file names, S = "a.png, b.gif, c.xlsx, d.docx, e.xlsx, f.gif";I need to check if the string has more than one .xlsx file names,
I just can't find a way to check if user puts any input or not? The line is Employee Name and I need to validate that he puts something there.
import java.util.Scanner; public class JavaMartInventorySystem { public static void main(String[] args) { String empName; Scanner keyboard = new Scanner(System.in);
which method i can use so that the program checks if the input value is a digit or else outputs a message saying that `the value entered is not a number.
I'm trying to write code for a program that checks numbers upto a number that the user gives. I've looked around, and the nearest matches I can see are people using for loops with predetermined amounts of looping.The only real tools I'm allowed to use are basic arithmetic, and while loops. The program is supposed to have 2 nested while loops.
import java.util.Scanner; import java.io.*; public class questionTwo234234 { public static void main(String[] args){
I have the following code to check for five characters palindrome but it always give me incorrect answer that if i have a word like radar the answer it isn't a palindrome. and if i changed any thing in the code i got either stack overflow or index out of bounds exception
The code is as the following
import java.util.Scanner; public class Palindrome { int first =0; static int n; int last = 4; int y = 0; public static void main(String [] args)
I'm up to an app which includes Alarm clock in it. User selects the date using JSpinners and My Alarm clock class checks if the current date is equal to the selected date and pops up an alarm. That's all i've done so far. What i want is some ideas about how can i manage these alarms in my app. What i think is:
* Getting alarm dates from user and save it in database and creating a thread which runs always and check database whether there is an alarm... (will it make my app) ??
In simple words how to continuously check for upcoming alarms and popup any time any alarm comes up during my app is running
Note: My App is not only about alarms, it also contains a complete management system.
I have to make ask for 2 houses or more (INSTANSED CLASS, with 2 ints ) with the same size(int ), but i they cant use the same door number(int). how do i check in my ArrayList that they have different numbers while not caring about different size? .
The ArrayList is in a class called system. I dont know if i should try to Override the equal or try something else.
Prompt user to enter a social security number in the format DDD-DD-DDDD, where D is a digit. Displays "Valid SSN" for a correct ssn, and "Invalid SSN" otherwise.I have it working I am just looking for other ways to solve this with an array maybe or something simpler. I have used if statements here:
public static boolean checkSSN(String social) { boolean valid = false; // 9 digits and 2 hyphens. First three characters, 5 and 6, and 8, 9, // 10, 11 are digits
The objective of my program is to read a file called input_data.txt and to calculate an invoice in which my program will print the results in a formatted text file. I haven't advanced to this step yet because I'm having trouble checking my ArrayList for a certain string. The reason I am searching for "duration" is so that my program will know when the heading is complete.
I want a progress bar when checking the sha1 . When getting the sha1 there we see the progress of checking
here is the code
/* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ package program1;
Exception in thread "Thread-2" java.lang.NullPointerException at program1.ProgressBar$thread1.run(ProgressBar.java:98) at java.lang.Thread.run(Thread.java:744)
How can i check the reference that is not duplicate and date format is DDDCCYYnnnnnnn, CC must be 20 and YY must not be less than the current year, nnnnnnn is the sequetial number of the file and to complete the 7 numeric characters, zero's must be populated in front of the number. DDD must be a valid reporting entity code. there must not be a duplicate. Code I try
Im trying to get the user to input the rows one by one but my input stops after the first. the examples i looked at in my book had this way i used as well. i are my rows and j are my columns. What is the correct way to do it?
import java.util.Scanner; public class Exercise08_01 { public static void main(String[] args) {
My code then is supposed to read it in and store it as an Array of singly linked lists. I am having trouble with my code, I am only getting outputs where it is only storing the first line of the txt matrixs like so:
I need to check an existence of a file if it is already created or not but the problem is on my code I obviously making the file first before I am able to check if it exist or not.
File createFile = new File ("//path/name.txt");
I've read somewhere that that line should not make a file without the createFile.createNewFile(); but when I tested it and on my program, my program was creating the file even without the .createNewFile() method with that said. I'm confused on how would I be able to check an existence of a file without of course having it pre-created. here is the partial code:
File newFile = new File ("C:/Documents and Settings/Admin/Desktop/Keys.txt"); BufferedWriter write = new BufferedWriter (new FileWriter (newFile)); BufferedReader read = new BufferedReader (new FileReader (newFile));
if (newFile.exist()) { System.out.print("File is existing"); }
so my task is to write a code which would ask user to input the year as integer and first three letters of the month with first being an upper case letter. Than the program would determine the number of days for given year and month.
Currently I have a brain crash on how to check, if the user has provided the month with first character being upper Case. If not, than the program would automatically correct the character. Problem starts at line 17.
import java.util.Scanner;
public class DaysOfMonth4_17 { public static void main (String[] args) { //Initiate scanner Scanner input = new Scanner (System.in); //Ask for year input and use is as INT System.out.println("Enter the year");
Suppose i am using useBean in one of the jsp to check for the user registration. suppose the url which is hit is simultaneously used by 4 users and suppose object type created i.e. ID is person .When the last user enters the details and submits the details a person has just submitted ,that is person id already created , then how the useBean will work in this scenario.
write a java program to check divisibility of a series of numbers that a user inputs the starting and ending numbers and also the number to check divisibility with.
The problem I am having is it only checks the first number and doesn't check the rest.
import java.util.Scanner; public class MyMidTermAssignment { public static void main(String[] args) { int numberInputBeginning,numberInputEnding,divisibleByNumber; System.out.println("Enter first number of series");
private static int getStrength(String pw) { int strength = 0; if(pw.length() >= 8){ strength++;
[Code] .....
This function doesn't seem to work for me. I believe the issue lies in the special character matching. It seems like it always returns true and adds to the strength. But I only want it to add to strength if at least one the following are in the password: *, -, _, ^, !, %
