jpanel

I am writing a java program that needs a file open dialog. The file open dialog isn't difficult, I'm hoping to use a JFileChooser . My problem is that I would like to have a dual pane JFrame (consisting of 2 JPanels ). The left panel would have a JList , and the right panel would have a file open dialog. When I use JFileChooser.showOpenDialog() this opens the dialog box above all other windows, which isn't what I want. Is there any way to have the JFileChooser (or maybe another file selection dialog) display inside a JPanel and not pop-up above it? Here is the code that I've tried, at this

I have a small problem when using JScrollPane in my Java application. I have a JScrollPane containing a JPanel . This JPanel is dynamically updated with buttons (vertically ordered) that can be of any width. The JPanel automatically adjusts its width to the largest JButton component inside. Now when the vertical scrollbar appears, it takes away some space on the right side of my JPanel , which causes the largest buttons not to appear completely. I don't want to use a horizontal scrollbar in addition to display the whole button. Is there a way to resize my JPanel when a scrollbar appears, so it

I have a swing application in which I display images in a JPanel. If the app is unable to produce the image I want to remove the previous one from the JPanel and replace it with a JTextField and message. I can add the text field , but it's drawn on top of the previous contents, which is itself a subclass of JPanel. Here's what I have: private void displayMessage(String message) { JTextField tf = new JTextField(message); cdPanel.removeAll(); cdPanel.add(tf, BorderLayout.NORTH);//tried lots of variations, inc. no layout cdPanel.validate(); } How can I get cdPanel to completely redraw itself? You

Is it possible to create a BufferedImage from a JPanel without first rendering it in a JFrame? I've searched everywhere I can think of and cannot find an answer. Can anyone help? Here is some sample code. If I don't un-comment the JFrame code, my BufferedImage is blank. test(){ // JFrame frame = new JFrame(); JPanel panel = new JPanel(); Dimension dim = new Dimension(50,50); panel.setMinimumSize(dim); panel.setMaximumSize(dim); panel.setPreferredSize(dim); JLabel label = new JLabel("hello"); panel.add(label); // frame.add(panel); // frame.pack(); BufferedImage bi = getScreenShot(panel); //..

I'm doing a little project that involves the mouse and key listeners in JPanel. Unfortunately, none of the methods are called when I use the mouse/keyboard. I have worked with JPanels/JFrame/JApplet and JComponents before. The code snippets are shown below: import java.awt.*; import java.awt.event.*; import javax.swing.*; import javax.swing.event.*; import java.io.File; import java.io.PrintWriter; import java.io.IOException; import java.io.FileNotFoundException; import java.awt.image.BufferedImage; import javax.imageio.ImageIO; import java.util.Scanner; public class Hello extends JPanel

I want to be able to have a JPanel in a cell with a JButton that does some work when clicked. I looked for howtos about Cell Editors, but all examples talk about replacing the cell with another component (e.g. replace an int with a JTextField etc.) My situation is a little different: I have the following ADT class MyClass { public String title; public String url; public String path; public int annotations; } I created a custom table cell model that has 1 column and the class for that column is MyClass. Then I created a cell renderer for that class that returns a JPanel as shown here: As you

How to display a JTable in a JPanel with Java? Imports and table model left as an exercise to the user of this code. Also, the panel layout is arbitrarily chosen for simplicity. public class JTableDisplay { public JTableDisplay() { JFrame frame = new JFrame("JTable Test Display"); JPanel panel = new JPanel(); panel.setLayout(new BorderLayout()); JTable table = new JTable(); JScrollPane tableContainer = new JScrollPane(table); panel.add(tableContainer, BorderLayout.CENTER); frame.getContentPane().add(panel); frame.pack(); frame.setVisible(true); } public static void main(String[] args) { new

I have an existing interface that has a JPanel for displaying pdf files. It is important to display the pdf inside this inteface and not open a new window. How can I display a pdf on the JPanel without using unnecessary code (libraries) if possible? if you want to render PDF content and ignoring the orginal format (boldness, font size.. etc) you can parse PDF using any PDF parser(PDFBox, Tika .. etc) and then set the string result to any text Component (JTextFiled or JTextArea). otherwise you should use PDF rendering library. there are some commercial libraries for that. but there is small