The program to actually read what i am entering inside the comboboxes. It is all there but does not work when i hit the submit purchase button.
import java.util.*;
class DateConstructor
{
/*
Verifies that the day code is consistent with monthCode and yearCode. Returns the corresponding date if so.
If not, it sets the errorCode to an appropriate value and returns null.
*/
public static Date constructDate(int monthCode, int dayCode, int yearCode,
ErrorCode errorCode)
{
boolean isCorrect = false;
Date dateEntered = null;
switch (monthCode)
Basically i have a question ask me to write a program that read integer from keyboard until a negative number is entered, and then print out the max and min out of the number i have entered.
This is what i have done already which works, but i need to ignore the negative number when print out max and min...which i dont know how to do so. when i compile this program now it will always give me the negative number i enter at the end as minimum. which i need to ignore
Also if negative number is entered at once the program should print a error message say max and min are undefined.
public static void main(String[] args) {
Scanner in = new Scanner(System.in); int large = Integer.MIN_VALUE; int small = Integer.MAX_VALUE; while(true) { System.out.print("Enter a integer: "); int n = in.nextInt();
I'm trying to get the input of two jcomboBoxes for example if jcombobox 1 option 1 and jcombox box 2 option 1 is selected result = x
Here is my code:
comboDest1.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent event) { // // Get the source of the component, which is our combo box. // JComboBox comboDest1 = (JComboBox) event.getSource();
So why is it that when I attach a KeyAdapter to a JTextField the code in the KeyAdapter will execute, but when I apply that same KeyAdapter to a JComboBox with its edit feature turned on it won't and, more importantly,
displaying COM port in Combo box , see my code below , it does not show any error but it does not show COM port in combo box , instead it shows the class name of Communicator with some garbage data .
I am trying to Make A GUI which has a Jcombo box i also want it to have a jlabel that up dates depending on which option the user selects from the JcomboBox
for exampl if i select lion i want it to say you chose lion on the Jlabel and if i choose ostrich i want it to say ostrich and so on
CommPortIdentifier portIdentifier = CommPortIdentifier.getPortIdentifier(port); if (portIdentifier.isCurrentlyOwned()) { System.out.println("Error: Port is currently in use"); } else { CommPort commPort = portIdentifier.open(this.getClass().getName(), 2000);
[Code].....
To set the serial port parameters i need to use Integers instead of strings.
I'm having an issue with using a JComboBox to select an item from a parallel array and displaying the correlating results in the same frame. Essentially, I have to add seven cities to a JComboBox drop down within a frame, select a city then display the population of that city in the frame with a label indicating the population. I have two issues:
1) my label text will not show up during execution unless I drag a corner no matter what width or height I make the frame.
2) I need to make the JComboBox selection correlate to the city population and display as a label, not having making that work using the getSelectedIndex() method.
I think I need to add an event listener for the combobox selection, not sure where to add that if that is the case. Here is my mess so far:
I have loaded the combo box at starting of program.When i am adding the element to combo box through database it's not updating visually.But the inserted data is successfully loaded in List.
I'm trying to populate my JComboBox with an Arraylist. Using two different classes, a GUI class (with the JComboBox - called it MainGui) and a class where I extract information from a database and put it into an ArrayList (which I call databaseconn).In my databaseconn class, I can print out the content of the ArrayList perfectly fine, but when I try to do it in my GUI class it just prints empty brackets "[]".(What I need it to do is to populate the drop down list in the JComboBox with the hotel information).Here's my code:
//The dataaccesslayer you should use for classes that deal with connection to the database
I'm having an issue with using a JComboBox to select an item from a parallel array and displaying the correlating results in the same frame. Essentially, I have to add seven cities to a JComboBox drop down within a frame, select a city then display the population of that city in the frame with a label indicating the population. I have two issues:
1) my label text will not show up during execution unless I drag a corner no matter what width or height I make the frame.
2) I need to make the JComboBox selection correlate to the city population and display as a label, not having making that work using the getSelectedIndex() method.
I think I need to add an event listener for the combobox selection, not sure where to add that if that is the case. Here is my mess so far:
import java.awt.FlowLayout; import java.awt.event.ItemEvent; import java.awt.event.ItemListener; import javax.swing.JComboBox; import javax.swing.JFrame; import javax.swing.JLabel; public class JPopulation{ public static void main(String args[]) {
Can a JCalendar be used as an item. I cannot find and appropriate combodatepicker or at least one that looks like a standard combobox. I cannot get an answer from google search all i can get is how to add normal items.
I recently posted that JComboBox should be used in a generic manner. I presumed that once declared, with some type Foo, that one could then do:
Java Code:
JComboxBox<Foo> cb = new JComboBox<>(); // sometime later Foo foo = cb.getSelectedItem(); mh_sh_highlight_all('java');
However, getSelectedItem() is documented to return a type of Object so a cast is still needed. I can't understand (even for backward compatibility) why it doesn't return a type of the specified type. Many other old classes have been converted to generics so why should this be any different? I just found that one could use getPrototypeDisplayValue() but that seems counter intuitive.
My database contains path of images that I want my jComboBox to diaplay. I have written the following code but it does not work for comboBox but works fine when I display image on jLabel etc. How should I go about this
I have a student class with fields names and Gender. Now, I have a students' array. such that I can create multiple students' classes: student a, student b, student c e.t.c and store them into the students' array. Now, I store this students' array in a JComboBox and want to only display the names of these students in the array. Such that the JComboBox lists only the names of student a, student b and student c. . When a user clicks on a selected Item on the JComboBox, even though, it was a student's name that was selected, I want the selectedItem to be a object of the Student class. This, I have learnt works with JList by writing your own custom JList models and then DefaultListCellRenderer. Is there anyway, one could also do this with JComboBox?
//Main Method import StudentList; import Student; import ViewGui; import Controller; public class SwingMainMethod {
I'm trying to hide a JComboBox option depending if the a user has picked a certain option from a previous JComboBox.
.setVisible(false). doesn't work
String[] Dest = new String[] {"Select Destination","Crete", "Paris", "Croatia"}; String[] Accomodation = new String[] {"Select your Accomodation","Hotel", "Villa", "Bed & Breakfast","Youth Hostel"}; String[] Night = new String[] {" Select number of Nights", "7","10","14"}; final JComboBox<String> comboDest1 = new JComboBox<String>(Dest);
[Code] ....
I know setVisible isn't the way it's done but i don't know how to do it
How can I add values from a JComboBox to a JTable ? I've created a drop down list and a button and I want the values to be added to a table whenever i click on the button (add).
I want to put this code in a class then call it in another class , but i do not how to do that. This code is working fine in my main class , but i want to write this code to another class for call it in main class.
I have moved this to its own thread because I was concerned that I might have hijacked the other OPs thread. As I stated earlier, I decided to try changing the arrowHead on a JComboBox since it should be easy. I created a polygon so I could fill in the shape. However, I believe that the graphics context passed to the paint method has been rotated counter clockwise by 90 degrees. I had assumed that (0,0) would be upper left corner. But (0,0) is lower left corner and (0,height) is lower right corner. Rotate those 90 degrees clockwise and you get them in the (my) expected positions. I also grabbed the AffineTransform from both the paint method and a JPanel paintComponent method. If you examine the trig values for each transformation you will see they are different.
It is not documented in the paint interface. It could just be related to the Nimbus look and feel. I have not checked out others. I did a web search and did not see any info regarding this.
Attached is my modified version of KevinWorkman's code posted in Changing the Foreground Color of ArrowButton of JComboBox in nimbus LaF. I commented out the part that draws the Triangle (It points right instead of down). The key are the circles which should locate the top left and bottom left points.
I lately started using "advanced" Swing-Components, like JTabbedPane and JComboBox, but I dont get the ComboBox working/This is the code I use:
public class PreferencesPanel extends JPanel { public PreferencesPanel (MapEditWindow window) { super ();
setLayout (new FlowLayout ());
String[] resolutions = { "1024x768", "1280x800"
[code]...
The TabbedPane is placed in another JPanel, which is placed in an Fullscreen-Window.
Now, the problem is, that when I start the application and open the "Preferences"-Tab, everything seems normal, I can see the ComboBox and the first entry is selected. But when I click it, instead of opening and offering me more choices, the program crashes and my screen turns black (I'm using OS X, on Windows it would possibly turn white, but I didnt test this out).
I have posted a class ReadExcelDemo and I have this working correctly and can println and get my desired outcome. Where I am having issues is with taking that data and filling a JComboBox drop down menu which is the last line of code where I am getting the error Array Dimension missing.
I have a colour coded table, the JComboBox has items that are also colour coded to correspond to the colours on the table.
My ComboBox contains:
comboBoxSFMotor.addItem("Select a Value"); comboBoxSFMotor.addItem("Electric"); comboBoxSFMotor.addItem("DC Shunt"); comboBoxSFMotor.addItem("Combustion");
How can I set a background colour for each of the items in the JComboBox that will correspond to the table so that the user can make an easy selection?
