The repaint method is an asynchronous method of applet class. When call to repaint method is made, it performs a request to erase and perform redraw of the component after a small delay in time.
What is paint () method?
paint( ) : The paint( ) method is called each time an AWT-based applet’s output must be redrawn. This situation can occur for several reasons. For example, the window in which the applet is running may be overwritten by another window and then uncovered. Or the applet window may be minimized and then restored.
What method does repaint call?
The repaint() Method
Drawing via repaint() most often takes place in response to user input. repaint() does not invoke paint() directly. It schedules a call to an intermediate method, update(). Finally, update() calls paint() (unless you override update).
What is difference between repaint and update method in Java?
repaint method should be used to invoke any components paint method. The repaint method actually starts a new thread that calls update instead of performing the painting sequentially. 3. update method, by default, calls the paint method after erasing the entire component.
What is the need of repainting in an applet?
Applet must quickly return control to the AWT run-time system. So to change a particular information itself, we can not make a loop in the paint method that repeatedly updates it. So, whenever your applet needs to update the information displayed in its window, it simply calls repaint().
What is difference between paint and repaint in Java Swing?
The paint() method contains instructions for painting the specific component. The repaint() method, which can’t be overridden, is more specific: it controls the update() to paint() process. You should call this method if you want a component to repaint itself or to change its look (but not the size).
How do you call a paint method in Java?
In Java Swing, we can change the paintComponent() method instead of paint() method as paint calls paintBorder(), paintComponent() and paintChildren() methods. We cannot call this method directly instead we can call repaint(). repaint(): This method cannot be overridden. It controls the update() -> paint() cycle.
What is drawString in Java?
One of the methods of Graphics is drawString(String st, int X, int Y) which draws a string on the graphics area at location starting X pixels from the left and Y pixels from the top.
What is Graphics class in Java?
The Graphics class is the abstract base class for all graphics contexts that allow an application to draw onto components that are realized on various devices, as well as onto off-screen images. A Graphics object encapsulates state information needed for the basic rendering operations that Java supports.
What is the difference between paint and paintComponent method?
It looks like the paint() method actually draws the component, including the border and children. If you only want to customize the component’s appearance excluding the border and children, you use paintComponent() .
What is the difference between the paint () and repaint () methods Mcq?
Scrollbar and a ScrollPane – A Scrollbar is a Component.
What is the difference between the paint() and repaint() methods?
|The paint() method is called when some action is performed on the window.||Whenever a repaint method is called, the update method is also called along with paint() method.|
How do you paint an applet?
repaint() in Java Applet Example
The repaint () method causes the AWT runtime system to execute the update () method of the Component class which clears the window with the background color of the applet and then calls the paint () method.
How do Applets differ from applications?
Applications are just like a Java programs that can be execute independently without using the web browser. Applets are small Java programs that are designed to be included with the HTML web document. They require a Java-enabled web browser for execution. Application program requires a main function for its execution.
When repaint () method is called ____ method is called * Draw () drawString () Update () paint ()?
Arrange the steps involved in developing and testing the applet in correct order. 4. State whether the following statements about the Applets are True or False. i) Applets can communicate with other services on the network.