Java Code Examples

Java Code to Demonstrate Recursion

The Java code implements a simple graphical application that visually represents and counts blobs within a grid by using recursion. A blob is a group of adjacent filled squares in the grid. The application uses Java Swing for creating the graphical user interface (GUI) components. It includes buttons for generating a new set of blobs, counting the number of blobs, and a grid where users can click to get information about the blob size at that specific position. This Java code uses recursion in the getBlobSize method to calculate the size of a blob.

Moving ball applet – Java

This is a Java class that uses some trigonometry and vector mathematics in its implementation.  An object of type MovingBall holds data about a “ball” that has a color, radius, position, speed, and direction. The ball is restricted to moving around inside a rectangle in the xy-plane. The ball can draw itself in a graphics context and will move when it is told to move.

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