Write an image to file – Java BufferedImage ImageIO
In the following tutorial we demonstrate how to write an image to a file. We can write and convert different images. In this example we read a JPG file and convert the image to...
Category: Java
Read an Image from File or URL or Class Path
In the following tutorial we demonstrate how to read an image from a File, URL, class-path or InputStream. How to Read an Image in Java This example shows how to read an image in...
Java Image Transparency Detection BufferedImage
In this tutorial we demonstrate how to detect image transparency in java. The first method is to check if an image contains an alpha channel. In the second method we loop over each pixel...
Adding Text or Image as Watermark to an Image in Java
The following tutorial demonstrates how to add a watermark to an image in java. We show you two examples. The first example adds a text watermark to an image. The second adds an image...
Java Resize Image to Fixed Width and Height Example
In this tutorial we show a Java Resize Image to Fixed Width and Height Example. We can resize an image using different algorithms. Each algorithm focuses on a different aspect. You can configure the...
Compress Images Java Example
This tutorial shows how to compress images in Java. You can reduce an image file size by compressing an image. This file reduction sometimes leads to increased performance and decreased network bandwidth. But when...
How to Convert Byte Array to String in Java
This tutorial demonstrates how to convert a byte[] to String. Encoding this String into a sequence of bytes using the given Charset, storing the result into a new byte array. byte[] byteArray = “this...
Convert BufferedImage to Byte Array in Java
In this example we demonstrate how to convert a BufferedImage to byte[] using standard Java. We use try-with-resources to manage the closing of OutputStream. Convert BufferedImage to Byte Array We create the BufferedImage by...
Convert Image to Grayscale using Java
In this example we demonstrate how to convert Image to Grayscale using Java. Convert Image to Grayscale We use the ImageIO.read() method to read an image to BufferedImage. Then we loop over each pixel...
Convert Image to Black and White using Java
This example demonstrates how to convert an image to Black and White using Java. A 1-bit image is created with an IndexColorModel with two colors in the default sRGB ColorSpace: {0,0,0} and {255,255,255}. Convert...