I want to create a list in java, to show a various number of panels, which include a checkbox, a textfield and a button. Then I want to check if for example checkbox_1 is checked. If so, then call the number from textfield_1. I don't know how i can check explicit the textfield_1 or checkbox_1. With a for-loop i make every checkbox with same variable name. Sure you have a solution for me :)
I hope my drawing helps you to understand my question.
thanks :)
Related
Let's say i have many toggle buttons and i would like to change their state based on a condition, like this: if(something){buttonone.setSelected(true);}
The problem is, i have more than a 100 buttons and it would be a lot of time to write the conditions one by one.
Is it possible to get the buttons from a string and toggle the desired ones?
String buttontext="buttonone, buttontwo, buttonthree";
(button from the string).setSelected(true);
I'm new to Java, and i can't find an aswer to this.
Thanks!
Place the buttons into an ArrayList or other collection and use a for loop through them, setting them selected if they match criteria. Also as noted in comments, if you use a HashMap<String, JToggleButton>, you can easily obtain a reference to the button of interest by its String "key", and then do what you wish with it.
how can I create (with JAVA) Combobox that contains Checkboxes for multiple selection and display the selected items in the Combobox like this picture:
click to see the pic
and thnx for advance.
EDIT:
I found this API (JAPURA API) and it's great but when I select multiple things I want to display the selected items instead of "* multiple items *".
Here's the link to achieve your goal:
JComboBox Providing a Custom Renderer
I would suggest you create a JButton and style it in the form of a Combobox if you want that.
Then, at the onclick function (actionperformed), you create a JPanel and make it visible under the button. In the panel, you can put whatever you want, so you just put checkboxes there.
I know this is kind of a workaround of your problem, but it should be easy for you to do so, and the actual user does not see a difference at all.
Hope I could help you.
Cheers,
Lucky
Alright so I'm trying to create a combo box that will update it's contents during runtime except I have no clue how to do this without receiving a bunch of errors. Is there some sort of method that I can use in order to accomplish this? For example, I have a vector that might start out with the name in drawers 1 and 2 be hi and bye. Then during runtime the program will change drawer one and two to eggs, sausage and add a third drawer with the name being computer. How can I go about changing the name on a JComboBox during runtime?
You want to clear the combobox of all entries using removeAllItems(), then re-add the items from the Vector using addItem().
The data shown in the ComboBox actually lives in its model - some subclass of ComboBoxModel.
DefaultComboBoxModel has methods for adding and removing elements. If you want to completely replace the combo box's contents at runtime, the simplest way might be to just build a new model and call theComboBox.setModel(theNewModel) with it. Also see setSelectedItem() for setting the selection.
So I am working on something in Java right now where I need to display lots of JTextComponents. I need to be able to turn words in any text component into a hyperlink of sorts, specifically, when these words are clicked, some method is called. Please note, I am not looking for a REAL hyperlink, just if you click on some text, a function is called. I believe JTextPane could solve this problem using components, but I can't seem to figure it out..
Yes, this question already exists, but the other one is a duplicate, and the one it links to does NOT answer this question.
If JEditorPane or JTextPane is a satisfactory JTextComponent, then a HyperlinkListener will be invoked to perform any desired action, as shown in this complete example.
A JTextArea could work for this too.
You could use a MouseListener and then translate the location of the click via viewToModel(Point pt).
You could then use javax.swing.text.Utilities.getRowStart(textArea, offset); if you need the start of the row selected, and getRowEnd(...) for the end.
You could have a Map<String, SomeLink> to see if a selected word is a linking word.
For an example of this, please check my answer here.
I am working on an assignment which requires the use of JList.
Basically it is an ordering shopping cart. I have 2 lists: one which has all of the items available to be purchased, and a second which holds the items that are "added" to the cart. It all works pretty well. However, I am having a tough time figuring out how to display the empty cart list when there aren't any items in it yet. I have an empty Panel until it's filled.
How can I make it visible all the time?
I've been looking for a solution for the problem your asking, coz i need the same feature.
I sought tutorials and it pointed me here. Basically you just add your list to the viewport of a JScrollPane. It works for me. Try to test and run the code shown on my given link.
Cheers!
You just need to set the default sizes and visible row count.
JList jlist = new JList(model);
jlist.setVisibleRowCount(10);
jlist.setFixedCellHeight(15);
jlist.setFixedCellWidth(100);