Adding Stars After Each Item In The List - For Loop Isn't Working?
Feb 26, 2014
This is supposed to be a method that adds stars after each item in the list.
Java Code:
import java.util.ArrayList;
public class ClientProgram {
public static void main(String[] args) {
ArrayList<String> list = new ArrayList<String>();
list.add("the");
[Code] ...
I'm guessing it's because list.size() changes, though but it should only find that value in the beginning, so it shouldn't be a problem?
Working on my final which is due today, its' and Inventory Program which I have been working on for the last 5 weeks. My Buttons on my GUI Add/Delete doesn't add items to my inventory. I'm not sure exactly what wrong with my code, I'm not getting any error and the Program compiles just fine, I just can get the Items to add of delete.
my Delete button starts on line 281 my Add Button begins on line 319
// /** Purpose:the purpose of this software is to display inputs as wells as the stocks and price of inputs, *as well as display a 5 % restocking fee per dvd and for the entire Invenotry of each object. *adding a GUI to the code. Adding a Previous button to the existing code allowing the user to cycle through *the Inventory list freely. Also adding a graphics logo to page. adding more buttons and allowing program to *save new items added to the inventory. **/
I managed to retrieve data, and set data in my own ways in which I like. But my problem is, if the file does not contain anything (fully empty), when I try to use my
set("", ""); method, it only sets the last one that is called.
I'm making a project about school management system , i have a jframe to set marks and inside the jframe i have a jtable which is connected to sql database , in the jframe I have a JCombobox with 6 different subjects and in my database i have created 6 tables for the subjects and if any of the subjects are clicked then the jTable will connect to database and change the table to that subject , after it is changed if you double click on any row and insert a value then it will automatically update the table in the database , but my problem is that if I select the first option from the jcombox which is English and edit the values then it works fine , but if I select any other option e.g Math or Science , then I try to edit the table then it edits the English table , I commented the English option in the code to see what happens and I saw that it edits only the first option and if you try to change the subjects and edit than it edits the first subject in the combobox , so how can I solve this ?
I need to choose the value of a list item in jsp. There are many employees in various departments and i need to choose that employees in department wise.
Example. I have two list items in jsp
1. Select dept_no,dept_name from departments 2. SElect emp_name from employees, departments where emp_dept_no=curr_dept_no and curr_dept_no = dept_no
These two are the list items. When i choose the department from the first list item i need to display the employees in that particular department in the second list.
I managed to retrieve data, and set data in my own ways in which I like. But my problem is, if the file does not contain anything (fully empty), when I try to use my
When I try popping everything off my stack, it leaves the last item alone. The size comes out correct when I print it out, so that cant be the issue, I think. Also, it doesnt even print it out if I do
for(int i = 0; i <= s1.Size() + 1; i++)
it still leaves one value left. What am I doing wrong?
public class Test { public static void main(String[] args) { Stack<String> s1 = new Stack<String>();
s1.Push("first"); s1.Push("2nd"); s1.Push("3rd"); s1.Push("4th"); System.out.println(s1); try { System.out.println("The top item is: " + s1.Peek());
How can I insert a new item at the middle of a BookList . I have also got a Book class represting Book objects and a inner class BookNode referencing them.
public void add(Book newBook) { BookNode newNode = new BookNode(newBook); if (firstNode == null){ // no nodes in the list so add newNode at start firstNode = newNode; tempNode = newNode ; }
I'm making an application that will allow users to view several displays simultaneously. I'm trying to make it so that the user should be able to select one of the items from a list then hit a radio button add them to the display. And there will be a second button to remove them from the display. Oh and there will always be alteast one display.
I would like to create a sub menu for every list item in a Jlist. I need the UI like avast interface. If we hover over an list item, its sub menu should be shown. I attempted to put an sub menu but didn't work. Is this possible in Swing?
I am trying to have a user select from a printed out array list, instead of having the user type in the "bill type" each time there is a bill to avoid user error as much as possible. For example I would like to have it print out like this:
"Select bill type from list:
1. Rent 2. Car 3. etc..."
and I would like the user to choose a number and not type in the "bill type". I don't want to use "Switch case" because it would need to be an expanding and I don't think "switch case" can do that.
Here is the code:
package homebudget; class Spending { //Do i need a totalAmount variable? String type; double amount; int year, month, day; public Spending()
[Code] ....
case 2: //Give option to enter a new expense or pick from list. //How to do this? If Statement that doesn't list duplicates, or a while search?
resp = JOptionPane.showInputDialog("Enter the type of expense:"); type = resp; resp = JOptionPane.showInputDialog("Enter the amount of the expense:"); amount = Double.parseDouble(resp);
public class Person { private SimpleStringProperty name; public SimpleStringProperty nameProperty(){ if(this.name==null){ this.name=new SimpleStringProperty();
[Code] .....
I have this:
lista = FXCollections.<Person>observableArrayList(); lista.addAll(new Person("uno"),new Person("due"),new Person("tre")); myListView.setItems(lista);
The problem is if I add /remove an item all is fine, the listView refreshes correctly:
Person p = new Person(tfld_textAdd.getText()); lista.add(0, p);
But if I change a value on an item into the observable list it doesn't:
lista.get(0).setName("new value");
I also have a table linked in the same way and the table workd correctly after I updated my Java version...
Ive set up a list to when a user creates an element it will be added to the entire list, but when i return to the main menu the Element isnt added.
Here is the code
public void setElement(int atomicNum, Element e){ if (ElementHasData(atomicNum) == false) { if(atomicNum < MAX){ list[atomicNum] = e; atomicNum++;
[Code] ...
Here is what the code intiates
~MAIN MENU~ Please select an option you wish to activate 1) Print All Elements 2) Print One Specific Element 3) Add an Element 4) Edit an Element
3 What is the atomic number of the Element you would like to add Numbers only valid 1-113 1 Enter element name Hydrogen Enter element Symbol H What is the Elements weight 1.01 NEW ELEMENT ADDED!
[Code] ....
~MAIN MENU~
Please select an option you wish to activate 1) Print All Elements 2) Print One Specific Element 3) Add an Element 4) Edit an Element
But then after i try to print the specific element
~MAIN MENU~ Please select an option you wish to activate 1) Print All Elements 2) Print One Specific Element 3) Add an Element 4) Edit an Element 2 What is the atomic number of the Element 1 that element does not exist would u like to create this element Enter yes or no
working on a project but cant seem to get my while loop to restart i want to restart this guessing game if the user inputs y at the end otherwise it will end.
import java.util.Scanner; import java.util.Random; public class GuessingGame{ public static void main(String[] args){ Scanner in = new Scanner(System.in); String again = "y"; while(again=="y"){
I'm having trouble figuring out why my do-while loop isn't fully working. As you can see, it will loop for the first 2 values of i (1 and 2), but then after that if i doesn't fit in my if or if-else statements, the loop stops.
int iterationNum = 1; int cycle = 0; double denominator = 1.0; double pi = 0.0; double validPrint; int n = 1; do { pi += (4.0 * Math.pow(-1.0, cycle))/denominator;
// for every attribute not mentioned in the rule r enumAtt = ruleE.enumerateAttributes(); while (enumAtt.hasMoreElements()) { Attribute attr = (Attribute) enumAtt.nextElement(); if (isMentionedIn(attr, r.m_test)) {continue;} int M = attr.numValues();
[Code] ....
It repeats only the last rule , why is that !!!!!!
Here is my program. I have to add the outputs from variable 'done' together. It seems to not work inside or outside the loop.
//A program that will find the last/check digit of a Book ISBN number.
import java.util.*; public class ISBN { public static void main(String[] args) { Scanner kb = new Scanner(System.in); System.out.println("Enter the ISBN number>"); String isbn = kb.nextLine(); //Even though the ISBN code is a number,
I'm trying to get a primefaces data list working and not sure I'm doing this correctly, having a problem with getting this view to display. Here is my xhtml .
I am working on a contact list program with a GUI for a school project.I'm running into all kinds of issues when trying to update the JList in my GUI which displays the contacts.I think my issues are being caused by a lack of synchronization between the contact list that stores the data, and the contact list that is being displayed.I've tried all kinds of getters and setters, passing array indexes, passing array member objects etc.
General rundown of how I want the GUI/Code to work: When I select an object in the JLIst, the fields on the right should display that objects information.When the "Add Contact" button is created, a new blank contact should be created and added to the Contact List, and then displayed in the JList.When a field on the right side of the GUI is updated, the object in the contact list is updated simultaneously (using document listener), and therefore the JList would also be updated.
I am trying to make a program that prints triangle... and I did various test on each method to realise that the problem lies with this segment.When I call this method, nothing prints out, I figure there is something with the loop that I am not realizing.the loop is backwards because it's supposed to have the right side edge parralel (when I try to print it out the spaces do not appear, imagine the x are space...), so as each line is looped the # of spaces diminishes
xxxx* xxx*x* xx*xx* x*xxx* *****
public class test { public static void main(String[] args){ for (int countdown = 5; countdown <= 1; countdown = countdown--){ showNTimes(countdown, ' '); showNTimes(5- countdown, '*'); System.out.println(""); } } public static void showNTimes ( int nbTimes, char carac ) { for ( int i = 1 ; i <= nbTimes ; i = i + 1 ) { System.out.print( carac ); } } }
Im making a simple code to add an array to a List (the code im referring to is <String> )
import java.util.*; public class L5_ArrayListProgram { public static void main(String[] args){ String[] things = {"lasers","ghouls", "food", "dark"}; List<String>list1 = new ArrayList<String>(); for(String x: things) list1.add(x);
My simple question is - what are the <String> ...<String> for? I understand it makes the list1 variable a string, but why is it made like this? do we usualy use <String> when we need to make a variable a String?
