![]() tLayout(new BoxLayout(listPane, BoxLayout.PAGE_AXIS)) Lay out the label and scroll pane from top to bottom. JScrollPane listScroller = new JScrollPane(list) The bold lines of code set up the box layouts and add components to them. This code is in the constructor for the dialog, which is implemented as a JDialog subclass. You can find links for running ListDialog and for its source files in theĮxample index for Using Swing Components. A BorderLayout combines the two parts of the GUI and ensures that any excess space is given to the scroll pane. In the bottom part of the GUI, a left-to-right box layout places two buttons next to each other. In the top part of the GUI, a top-to-bottom box layout places a label above a scroll pane. The following figure shows a GUI that uses two instances of BoxLayout. Alternatively, to compile and run the example yourself, consult the example index. Java™ Web Start ( download JDK 7 or later). Here is a picture of an application that demonstrates using BoxLayout to display a centered column of components:Ĭlick the Launch button to run BoxLayoutDemo using You might think of it as a version of FlowLayout, but with greater functionality. BoxLayout either stacks its components on top of each other or places them in a row your choice. The Swing packages include a general purpose layout manager namedīoxLayout. ![]() If you are interested in using JavaFX to create your GUI, see Otherwise, if you want to code by hand and do not want to use GroupLayout, then GridBagLayout is recommended as the next most flexible and powerful layout manager. ![]() If you are not interested in learning all the details of layout management, you might prefer to use the GroupLayout layout manager combined with a builder tool to lay out your GUI. ![]() Public class JButton extends AbstractButton implements AccessibleĪlso illustarte Java JButton : An example with ActionListenerī.Note: This lesson covers writing layout code by hand, which can be challenging. It inherits AbstractButton class.īelow is the declaration for class. The application result in some action when the button is pushed. The JButton class is used to create a labeled button that has platform independent implementation. inherit the JFrame class, so there is no need to create the instance of JFrame class explicitly. Creating JFrame, JButton and method call inside the java constructor. We can also write all the codes of creating JFrame, JButton and method call inside the Java constructor.į.setSize(400,500) //400 width and 500 heightį.setLayout(null) //using no layout managersį.setVisible(true) //making the frame visible JLabel label = new JLabel("JFrame By Example") įtDefaultCloseOperation(JFrame.EXIT_ON_CLOSE) JFrame frame = new JFrame("JFrame Example") A program to add a label and button in a frame Let's see a simple swing example where we are creating one button and adding it on the JFrame object inside the main() method. We can write the code of Swing inside the main(), constructor or any other method. By creating the object of Frame class (Association).NoteThe Java Foundation Classes (JFC) are a set of GUI components which simplify the development of desktop applications.įigure 10.2 :Hierarchy of Java Swing classesĬommonly used methods in Component class:įigure 10.3 :Commonly used methods in Component class: The javax.swing package provides classes for Java Swing components such as JButton, JTextField, JTextArea, JRadioButton, JCheckbox, JMenu, JColorChooser etc. Java Swing provides better lightweight components than AWT. It is built on the top of AWT (Abstract Windowing Toolkit) API and entirely written in Java. Java Swing is a part of Java Foundation Classes (JFC) that is used to create window-based applications. Chapter 10 - Java Swing Chapter 10 Java Swing
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