Sets the icon that is displayed by default. Sets the horizontal alignment of the text in relation to the icon. Void setHorizontalTextPosition(int textPosition) The integer values for alignment are stored in the constants LEFT, RIGHT, CENTER, LEADING, and TRAILING, which JButton inherits from the class. Sets the horizontal alignment of text and icon.
Void setHorizontalAlignment(int alignment) Void removeChangeListener(ChangeListener l)Įnables (true) or disables (false) the button. Void removeActionListener(ActionListener l) Returns the state (selected / not selected) of the button.
Returns the vertical alignment of the text relative to the icon. Returns the vertical alignment of text and icon. Returns the set text (label of the button). Returns the set mnemonic (keyboard shortcut). Returns the horizontal text position relative to the icon. Returns the horizontal alignment of text and icon. Then I add the button on the frame using add method of the Java JButton class myFrame.add(button) īelow we present some methods of the Java JButton class: MethodĪssigns an ActionListener to the button. This is called when an ActionEvent (here: triggering the button) occurs on the relevant button.Īssigns a ChangeListener to the button. This is called when the state of the button changes. In this method first and the second argument is used for alignment (X, Y) and the third and fourth argument is used for sizing the button tBounds(130,150,120,40) Then I set the position and size of the button using setBound method.
Then I Create the object of the java JButton class and set the caption as “Click” JButton button = new JButton("Click") Then I set the frame size using the setSize method tSize(400, 350) When you compile and run the above source code, you will see the following output:įirst, I create my JFrame object and set the title “JButton Testing Example” JFrame myFrame = new JFrame("JButton Testing Example") tDefaultCloseOperation(JFrame.EXIT_ON_CLOSE) here i am adding the button to the frame this statement is used to Set the position and size of a button JFrame myFrame = new JFrame("JButton Testing Example")
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With the help of this constructor, the generated JButton object receives a text and an icon directly. The text appears behind the icon.Įxample: How to display a Java JButton: package This constructor is used to display the caption on java JButton. This constructor creates a JButton that displays an icon instead of a label. This usage is very common in toolbars ( JToolBar). A typical example would be the “Save” button with the disk icon. Here, a Java JButton is directly assigned an action that is to be triggered when the button is clicked. In addition to the standard constructor, the java JButton class has a few other constructors that we would like to explain in more detail in the following table: Constructor At this point, we just want to cover how to display a JButton. How to trigger an action by clicking a button will be covered in my next article in detail. This control is found in almost every application that allows you to perform a specific action.
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