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Move an Object Across Canvas in Java - Animation Example




How to Draw on the Java Canvas

In this tutorial, we'll explore how to animate an object across a canvas in Java. You'll learn how to use the Graphics class to draw and move shapes in Java, specifically a circle, with a simple Java animation example suitable for senior secondary students.

We start by drawing a circle (our body) using the fillOval method of the Graphics object. This is the foundation for creating a Java graphics moving object.


Animating a Circle Across the Java Canvas

To animate a circle across canvas in Java, we repeatedly draw the circle, change its position, and use clearRect() to erase the old image. This creates a smooth Java Swing animate object effect.

Create a new java project; call it Dymetric.
Create 3 new class files; File, New.
Call them Facet, PanelsMovingBody and MovingBody.
Together, they implement the Java canvas animation code.
Type out the adjoining Java code for animating an image body across the canvas component.



How the Java AWT Animation Code Works

The MovingBody Java class extends Canvas and handles the actual drawing and movement. It:

  • Draws a circle with fillOval.
  • Uses clearRect to erase old drawings.
  • Updates the x coordinate with a loop.
  • Uses Thread.sleep() to control speed.

This demonstrates a simple but effective Java animation technique.


What You've Learnt on Java Canvas and Swing Animation

In this tutorial, you've learnt how to animate an object across a canvas in Java. We've used the 'Graphics' class to draw and move shapes in Java, specifically a circle. By repeatedly calling 'repaint()' and using 'Thread.sleep()', we can create a smooth Java animation example.

Key Takeaway on Java Canvas and Swing Animation

By now, you've learned:

  • How to move an object across canvas in Java.
  • How to use Graphics, fillOval, and clearRect to create Java GUI animation.
  • How a repaint loop with Thread.sleep() achieves smooth motion.

This Java animation example is a foundation for building interactive graphics and games. By now, you should be able to create a simple Java animation example by moving an object across the canvas. This technique is a foundation for more advanced Java GUI animations and games.



So! Java Fun Practice Exercise - Animate Circle

As a fun practice exercise, try changing the speed, direction, or shape. This will help you understand more about Java graphics drawing and updating positions.









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