style argument applies an attribute to display text and is one of three values Font.PLAIN, Font.BOLD, Font.Italic point size argument is an integer that represent about 1/72 of an inch. if the program runs might not access to the requested font, and if necessary, it substitutes a default font. Common font like Arial, Century, Time New Roman. To construct a Font object, there is need three arguments : typeface, style, and point size typeFace argument typeface argument : the Font constructor is a String representing a font. setFont ( ) method requires a Font object argument. Changing a JLabel's Font Font class from which creating an object that holds typeface and size information. setText( ) method changing the text in a JLAbel by using the Component class setText() method with the JLabel object and passing a String to itĬan also retrieve the text in a JLabel ( or other Component ) by using getText() method which will return the current stored String. The invalidate() and validate() methods are part of the Container class, and the repaint() method is part of the Component class.
If you add or remove a component from a container after it has been made visible, you should also call the invalidate(), validate(), and repaint() methods, or else you will not see the results of your actions. The following statement removes greeting from aFrame: The counterpart to the add() method is the remove() method. JFrame aFrame = new JFrame("Third frame") tSize(FRAME_WIDTH, FRAME_HEIGHT) tVisible(true) tDefaultCloseOperation(JFrame.EXIT_ON_CLOSE) You then can add the greeting object to the JFrame object named aFrame using the add() method as follows: JLabel greeting = new JLabel("Good day")
KEEPS DEFAULTING TO FLOWLAYOUT CODE
Example JLabel Code For example, you can create a JLabel named greeting that holds the words "Good day" by writing the following statement: JLabel(String text, int horizontalAlignment) creates a JLabel instance with the specified text and horizontal alignment. Instance with the specified text, image, and horizontal alignment. JLabel(String text, Icon icon, int horizontalAlignment) creates a JLabel JLabel(String text) creates a JLabel instance with the specified text. JLAbel( Icon image, int horizontalAlignment ) create a JLabel instance with the specified image and horizontal alignment JLAbel ( Icon Image ) create a JLAbel instance with the specified image Available constructors for the JLabel class JLabel () create a JLAbel instance with no image and with an empt string for the title. This component can be placed in a JFrame.
Using the JLabel Class JLabel is a built-in Java Swing class that holds text that can be displayed
KEEPS DEFAULTING TO FLOWLAYOUT WINDOWS
Customizing a JFrame Appearance the icons and buttons are known as window decoration.īy default windows decoration are supplied by the operating systemĪ look and feel is the default appearance and behavior of any user interface.
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