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2 Answers. override the paintComponent method of the JLabel . It should first call super. paintComponent , so you get whatever the JLabel contains, then add your own drawing code after that.
Can you draw on a JFrame?
Problem: I want to draw some graphics in a frame. Solution 1: You can do this very easily by extending JFrame class to create your own frame class so that you can override the paint() method. The paint() method provides you a Graphics object, which will give you utility methods to draw various types of graphics.
How do you put a JLabel on top of another JLabel?
The short answer is yes, as a JLabel is a Container , so it can accept a Component (a JLabel is a subclass of Component ) to add into the JLabel by using the add method: JLabel outsideLabel = new JLabel(“Hello”); JLabel insideLabel = new JLabel(“World”); outsideLabel. add(insideLabel);Oct 4, 2009.
What is a Graphics object?
The Graphics object represents a GDI+ drawing surface, and is the object that is used to create graphical images. Using the Graphics object to draw lines and shapes, render text, or display and manipulate images.
How do I run a Java Graphics program?
Example of Graphics in applet: import java. applet. Applet; import java. awt. *; public class GraphicsDemo extends Applet{ public void paint(Graphics g){ g. setColor(Color. red); g. drawString(“Welcome”,50, 50); g. drawLine(20,30,20,300); g. drawRect(70,100,30,30);.
Can JTextField be used as an alternative to JLabel?
Select the correct statement(s) in the following. a) JTextField cannot be used as an alternative to JLabel.
Can you add a panel to a panel in Java?
We can add most of the components like buttons, text fields, labels, tables, lists, trees, etc. to a JPanel. We can also add multiple sub-panels to the main panel using the add() method of Container class.
What is the use of JLabel in Java?
JLabel is a class of java Swing . JLabel is used to display a short string or an image icon. JLabel can display text, image or both .
How do I draw in Windows Forms?
To draw lines and shapes you must follow these steps: Create a Graphics object by calling System. Windows. Forms. Control. CreateGraphics method. The Graphics object contains the Windows DC you need to draw with. Create a Pen object. Call a member of the Graphics class to draw on the control using the Pen.
How do I add Graphics to Visual Studio?
In Visual Studio, on the main menu, choose Debug, Graphics, Start Graphics Debugging, or just press Alt+F5. This starts your app under Graphics Diagnostics and displays the diagnostics session windows in Visual Studio.
How does draw ARC work in Java?
drawArc. Draws the outline of a circular or elliptical arc covering the specified rectangle. The resulting arc begins at startAngle and extends for arcAngle degrees, using the current color. Angles are interpreted such that 0 degrees is at the 3 o’clock position.
How do you draw in Java?
Basically, all you have to do in order to draw shapes in a Java application is: Create a new Frame . Create a class that extends the Component class and override the paint method. Use Graphics2D. Use Graphics2D. Use Graphics2D. Use Graphics2D.
How is a pixel drawn in Java?
You can color a single pixel in a Java drawing by drawing a line with the same start point and end point. Before you can draw pixels, you must create a JFrame or other visible component and add a custom component with an overridden paint method.
How do you draw an arc in Java applet?
Draw Arc in Java Applet import java. awt.*; import java. applet.*; public class Mouth extends Applet. { public void paint (Graphics g) { g. drawArc(60, 125, 80, 40, 180, 180); // Draw an Arc Shape. g. fillArc(60, 125, 80, 40, 180, 180); // Fill an Arc Shape.
What is the difference between JTextField and JTextArea?
The main difference between JTextField and JTextArea in Java is that a JTextField allows entering a single line of text in a GUI application while the JTextArea allows entering multiple lines of text in a GUI application.
What is the use of JTextField?
JTextField is a lightweight component that allows the editing of a single line of text. For information on and examples of using text fields, see How to Use Text Fields in The Java Tutorial. JTextField is intended to be source-compatible with java. awt.
What is JPanel?
The JPanel is a simplest container class. It provides space in which an application can attach any other component. It inherits the JComponents class. It doesn’t have title bar.
What is overlay layout in Java?
An OverlayLayout is a subclass of Object class and it can arrange the components over the top of each other and uses components specified alignments to position them relatively. When different sizes are given to any of the components, we can see all the components.
What is purpose of JTree Mcq?
The JTree class is used to display the tree structured data or hierarchical data. JTree is a complex component. It has a ‘root node’ at the top most which is a parent for all nodes in the tree. It inherits JComponent class.
What is box layout in Java?
BoxLayout is a standard layout manager that comes along with Java platform. It helps in arranging the components in a horizontal or vertical manner inside the container. Unlike other layout managers, BoxLayout constructor passes the required containers to the layout manager constructor.
Is a JLabel a JComponent?
The object of JLabel class is a component for placing text in a container. It is used to display a single line of read only text. The text can be changed by an application but a user cannot edit it directly. It inherits JComponent class.
What can a J label not do?
A label does not react to input events. As a result, it cannot get the keyboard focus. A label can, however, display a keyboard alternative as a convenience for a nearby component that has a keyboard alternative but can’t display it. A JLabel object can display either text, an image, or both.
How do you create a JLabel example?
Create JLabel with border Create a class that extends JFrame . Create a new JLabel . Use BorderFactory. createLineBorder(Color. BLUE, 5) to create a new Border with specific color and line width. Use JLabel. setBorder to set the border of the JLabel component. Use add to add the JLabel to the frame.