I know this is kind of a beginners question but my books aren't explaining it and the API isn't helping much when I don't understand it. Someone please help me to get this. I created a JList using NetBeans and everything is set to whatever NetBeans has as a default for JLists. My goal is to make a JList show a List of [x] if a user pic...
I am trying to get a JCheckBox to display on a line that is in the multiple select JList and still perform its functionality. Right now if I add the JCheckBox as an element it just prints its toString format. Help/ideas? ...
Hello community! I'm having this problem: I have a JList (within a JScrollPane) with say about 1000 elements, and the dimensions of this JList obviously doesn't allow to show all the data. Now, I have this JList within a JScrollPane and I need that when I say JList.setSelectedIndex(), the JScrollPane automatically scrolls into, and show...
Hi there, I want to repeatedly take input from the user(probably using a button) via a JOptionPane(already done) and store the details in something(how about a dynamic object array) and display this information as a list in a scrollable JList. MY CODE import java.awt.GridLayout; import javax.swing.*; class Flight { public stati...
How to make the jList selectable and jScrollPane scrollable inside a jTable. This is my table code : private JTable getCalendarTable() { if (calendarTable == null) { calendarTable = new JTable() { public boolean isCellEditable(int nRow, int nCol) { if (nRow % 2 != 0) { return ...
OK so I'm trying to output the current string from an array that was put into a list... However when I click on the list I get a NullPointerException... :\ Help? :) import java.applet.Applet; import java.awt.*; import javax.swing.*; import java.awt.event.*; public class lisTry extends JApplet implements MouseListener { public static...
OK so I have a JList and the content is provided with an array. I know how to add elements to an array but I want to know how to refresh a JList... or is it even possible? I tried Google. :\ import java.applet.Applet; import java.awt.*; import javax.swing.*; import java.awt.event.*; public class bs extends JApplet implements MouseList...
OK so I'm doing a small part of my inventory. I got MOST of it down. I'm trying to add string items to an ArrayList then add that to a JList. However, I'm getting this error when I compile: C:\Users\Dan\Documents\DanJavaGen\inventory.java:30: cannot find symbol symbol : constructor JList(java.util.ArrayList<java.lang.String>) location:...
On every JList I've made... I've had to CLICK on it before ANY of the JList would show up. It was like... invisible but still there... UNTIL I clicked on it... I have tried list.setVisible(true) and such... but no luck. :\ Help? Yes, I tried the Javadoc, Google, AND SO Search. >_< I have never encountered a problem like this. Code: i...
hello, I have a problem with my two JList components. I created and placed on JFrame two JList components. I added listSelectionListeners to both of them that should unselect a selection of the other JList like so: (edit: To make as requested self-contained sample) public class JListIssue { public static void main(String[] args...
OK so whenever I open up a new appelt window with my code... the JList does not show UNTIL I click on it... how do i make it so all values appear when i start the applet? thanks. import java.awt.*; import javax.swing.*; import javax.swing.JList; import java.awt.event.*; import java.util.*; public class inventory extends JApplet implem...
I have a JList component which should be emptied and repopulated. The following code (based on my original code) shows a simple window with a JList and a JButton: import java.awt.BorderLayout; import javax.swing.*; public class JListTest extends javax.swing.JFrame{ JList jList; JButton button; DefaultListModel model; ...
I'm new to Java (and swing) and looking for a way to save (and reload it later) all JList elements to Database or in particular MySQL. I read about Java Serializable and cannot find a working code for reference. ...
My code so far: import java.awt.BorderLayout; import java.awt.Container; import javax.swing.Box; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JList; import javax.swing.JScrollPane; import javax.swing.event.ListSelectionEvent; import javax.swing.event.ListSelectionListener; public class TestFile2 { publi...
I have created the following class implementing a ListSelectionListener interface. This class should "listen" to the selection events of a JList I have created. Everytime the use clicks on a row of this list, the selected_row value should be updated and the string "The format row selected is ...." should therefore change. However after c...
When i input a name to the Jlist, the name gets outputted to the lower section of the list, how do i make it to where the name is set to the top of the window package Gui; //import java.awt.BorderLayout; import java.awt.BorderLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.*; public...
Ok, so I am working on a homework assignment, and I am using SWING to make a GUI for a Java project, and I am running into troubles with JList. I have a customer object that I have made and set attributes to, and I want to add the object into a TreeMap. I want to hook up the Treemap so that any and all objects that are in the map will p...
I have created a JDialog with three JList lists. The selection of a row in the first list (named FirstList) updates the content of the second list (SecondList) and the selection of a row in the second list updates the content of the third list (ThirdList). In the ThirdList class I have included the following method: public void addRowsS...
My current application uses a JList and everything is well (the only customization I did was to set the italic font on some of the rows). Now I want to "upgrade" the user interface and instead of just labels in the List, I want a checkbox and a text field to be able to update the entry. I started changing the code and adding a custom c...