Use Switch Or If / Else Statement To Filter Out Data Not Required For App
Feb 21, 2015
I'm using jsoup to parse a calendar page.
I want to use a switch or if/else statement to filter out the data I don't need for the app. This is by no means anything more than a draft because java is easier to work with than android.
So from what iv learnt in Java and programming in general is that using a case statement is far more efficient that using multiple IF statements. I have an multiple IF statements contained within a method of my program, and would like to instead use a case statement.
So I want to make a simple Java that ask the user to pick a powers and it has two options.If the user picks magic then execute the first if statement then ask the user again which type of magic the user wants.I can't make it work it keeps printing the else statement. Why is that?
import java.util.Scanner; public class Variable { static Scanner zcan = new Scanner(System.in); public static void main(String[] args)
this is what code i have so far i want to try and get the computer to output a String type result rather than a number and i wonder if there is a way to output the score after the user is done with the game. I couldn't really see if there was a way to incorporate a switch statement.
import java.util.Scanner; import java.util.Random; public class RPSLS { public static void main(String[] args) {
I am trying to add a while loop into my switch statement. If you run the program, it will ask to enter the class grade (9,10,11, or 12). If you insert 5, it will say to try again. But, if you enter a wrong number twice, it will continue on to the next part of the program, which is asking how many students are in the class. Therefore, I believe a while loop would work, but it is not working at all. The program still runs, just doesn't fix the error. The program is below:
import java.util.Scanner; public class stephProject { public static void main(String[] args) { //call method welcomeMessage(); //method 1 of 3
Write an application that reads the quantity for each product until user has completed their order. Your program should use switch, if, for, while and do while statements to read, calculate and display the total retail value of all pro ducts sold for each user transaction. The user should be able to start a new transaction after the first transaction is completed. The user can make no more than 3 total orders
public class Merchandise { private int bootsQTY; private int wranglersQTY; private int hatsQTY; private int chapsQTY;
[Code] ....
When I run my program all of my quantities and the total are 0, I have been stuck for a while trying to figure out how to get values assigned to them...
cannot break from while loop. Whenever I am trying to exit from startCustomerManagement-> backEnd() -> mainScreen()..It gets stuck between mainScreen and backEnd screen. However I can exit from backEnd()->startCustomerManagement() screen
/* * 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 javaapplication19; import java.io.BufferedReader;
What I want to happen is to add 2+ contacts by entering "a" from the menu. Then I want to enter "c" and have it display those contacts. But it doesn't seem to remember that I changed the arrayList masterList.
Java Code:
public class ContactListApp2 { public static void main(String[] args) { boolean quit = false; while (quit == false) { System.out.println("Main Menu:");
I am stuck with two switch statements that I feel I am close to achieving. My first switch statement is to generate random mathematical operators for the math questions in the game (generated randomly) My second switch statement is to determines which action the system will take upon the correct or incorrect answer. For the first switch statement I have a variable called num. Num is a random integer. I have an operator mapped to each outcome of num. In my second switch statement I am trying to use the variable answer as a variable in the first case but do not know how.
package pkgnew; import java.util.Scanner; import java.util.Random; public class New { public static void main(String args[]) { //Declare and construct variables
I'm trying to create a switch statement inside of a counter controlled (while) loop that asks for an input of...
"How many characters would you like to convert?"
Then you type in a number > 0, and then it should convert letters into the "1337" equivalent.
This is an example on what it should do.
How many characters would you like to convert? 5 Enter character #1 to convert: ! !- Enter character #2 to convert: $ $- Enter character #3 to convert: # #- Enter character #4 to convert: * *- Enter character #5 to convert: , , -
Whenever i try to run the program, i only get the- How many characters would you like to convert- i input 5 but then nothing else prints..
My codes..
System.out.print ( "How many characters would you like to convert?: " );
int convertCounter = 1; char ch; ch = input.next().charAt(0); while (convertCounter > 0) switch ( ch ){
I am trying to write out a program that takes numerical input from the user and converts it to a date using the English month name. I am experimenting with the method of a "switch" statement without using the "break" clause. However, I seem to be missing something, as Eclipse is telling me I have a syntax error with my block. My curly braces seem properly placed. Also, I made sure to follow guidelines to make my code fit on the screen and remain easy to read.
import acm.program.*; public class MethodsThatReturnNonNumericValues extends ConsoleProgram { public void run() { int month=readInt("Enter month number"); int day=readInt("Enter day"); int year=readInt("Enter year");
// GradeBook class uses switch statement to count A, B, C, D and F grades.
import java.util.Scanner; public class GradeBook { private String courseName; private int total; private int gradeCounter; private int aCount;
[Code] .....
Then eclipse told me that:
"Exception in thread "main" java.util.InputMismatchException at java.util.Scanner.throwFor(Unknown Source) at java.util.Scanner.next(Unknown Source) at java.util.Scanner.nextInt(Unknown Source) at java.util.Scanner.nextInt(Unknown Source) at chapter5_control_statements_II.GradeBook.inputGrades(GradeBook.java:52) at chapter5_control_statements_II.GradeBookTest.main(GradeBookTest.java:11)"
//Use a Switch statement to determine outcomes for letter grades switch (Letter) { case 'A': outFile.println(" Good Work! You have met the pre-req for CIS 220."); break; case 'B': outFile.println("
[Code] ....
is not printing the information on the next line in my output file.
We're told to make a cash register program for 5 products using Java. It loops until "-1" is entered on the "Continue?" input dialog box.There should be a:
1. Main Menu - where the user will pick what to buy (one product at a time) like the sample code below and prompt the user if he will buy another product or not. If yes, the program will go back to the main menu to buy another product and if not, continue to the program. And it looks something like this: LEvFOwQ.png
2. Receipt - at the end of every transaction.
3. Daily Sales Report where it shows all receipts then grand total like:
Transaction 1
-subtotal
Transaction 2
-subtotal
and so on then,
GRAND TOTAL
4. Inventory Report where it shows the Items Available before the Selling, Items Sold, and Items Available after Selling in table format.
Below is the code for a simple cash register for only one product that I made but I need to upgrade it for it to work for 5 products. That code will serve as the basis for this program.make the switch or if-else statement for the main menu first and if I got it right I try doing the rest.
int userQty1 = Integer.parseInt(JOptionPane.showInputDialog( "Product ID Product Name Product Quantity Product Price" +prodID1 + " " +prodName1 + " " + prodQty1 + " " +prodPrice1 " " + and so on until prod5));
I have a situation to load data while JSF page loads. Also have a filter which populates user information from http request.
I was expecting the filter first to populate the user information and in the managed bean get method to verify the user information and get the data (from database). But in this case i see the managed bean get method is invoked before filter populates user information and i get null pointer exception because the user information is null.
I had to work around to get the user information from FacesContext in the managed bean get method because the user information wasn't available. Is there a way to make sure the filter is invoked first?
Alright so I wrote a switch statement that decides what range to print based on the letter grade input.
import java.util.Scanner; public class SwitchPractice { public static void main(String [] args) { Scanner scan = new Scanner(System.in);
[code]...
It works fine, but once it the user enters a letter grade and then displays the value, it does not prompt the user for another letter grade so that it can perform the output again. Also if I wanted to display an error message to the user if they enter an invalid letter grade how would I do that. I tried using a while loop and if statement in the switch statement but that didn't work.
But the error is giving me incompatible types. I would like to set all the pixels at a certain point up to the dimensions of my rectangle and so on. How would I do that?
Using the concept of web service (SOAP), I need to have a web service running. The client page will pass an ID to the web service and in return the service will return some values retrieved from the database based on the ID passed, as output. The output so fetched has to be in XML format.
I'm making a Hangman program for Java, here's my code:
import java.util.Scanner; public class Hangman { /** * @param args the command line arguments */ public static void main(String[] args) { String answerWord = WordList.getWord();
[Code] .....
The Compiler gives me this only error:
Hangman.java:39: error: unexpected type displayWord.charAt(i)=userInput.charAt(0); ^ required: variable found: value
I understand that charAt returns i as a value and not a variable. What do I use to return a variable as I intended?
I have quite a specific view for how I want my components layed out. No matter what I try I can get them to display how I want! I'm using three JPanels. There's a main panel that goes inside the tabbed pane. This main panel contains two other panels. The First panel is a gridbaglayout panel, with labels on the left column, and components on the right column. The second panel is underneath the second, and contains a label, and a button beneath it. THis uses a basic box layout, with one component per line. The label doesn't always appear (depends if a component is changed). With everything showing, this is how it looks so far:
However, I want the Labels on the left of the pane. The right hand column should be aligned horizontally and have more space from the labels. Ideally I'd like a gap between the last label/checkbox and the Note label.
This is my current code for the panel/s inside the tabbed pane window.
videoPanel = new JPanel(); applyVidBtn = new JButton("Apply Settings"); applyVidBtn.setVisible(false); warningLbl = new JLabel("Note. Applying these settings causes a program restart."); warningLbl.setVisible(false);
