![]() 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") ![]() 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 FULL PATH WILL WORK ONLY, I HAVE TO USE THIS TO WORK, IF NOT IN THEīut: NONE of these worked with Oracle JDeveloper, same 1.6 JDK.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. "C:/Documents and Settings/user/My Documents/JCreator Pro/MyProjects/TestScaleIm ageIcon/cl asses/imag es/image.J PG", 77, 65)) ![]() Or with the other image file IO method I pass down the string to: Private Icon labelImage = new ImageIcon(getClass().getRe source("/i mages/imag e.JPG")) // Relative Path will work with JCreator I swithed to JCreator IDE and this is what seemed to work best: I also got rid of the underscore or other special characters to make it simpler, and just put JPG into /images/image.JPGĪlso, it would never work with Oracle JDeveloper IDE I was originally using. (The actual format of the path string seems to be inconsistent between various Java methods and critical.) You were right, it is very critical how I define path, and it is not even consistent Select all Open in new window image-3.JPG TestScaleImageIcon.gifĪctually it was not the full solution, but it lead me to the full solution. To make it more convenient to use it in my larger program I created this method that takes the file path string argument along with the required sizes and should return an ImageIcon object to be used for setting the image for the jLabel.Īny other way to do this, so that it actually works? package testscaleimageicon import import import import import java.io.File import java.io.IOException import import import import import import import public class TestScaleImageIcon extends JFrame I think this is straightforward and should work. I made a quick test program to show what I am doing. I was trying to load re-sized images into jLabels, and for whatever reason I cannot openĪnd resize the JPG files, even though I can directly load them into the jLabel
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