Add Watermark to Images in Java

add-diagonal-watermark-to-image.java

// Load image
com.aspose.imaging.Image image = com.aspose.imaging.Image.load("image.png");

// Create and initialize an instance of Graphics class
Graphics graphics= new Graphics(image);

// Creates an instance of Font
Font font = new Font("Times New Roman", 16, FontStyle.Bold);

// Create an instance of SolidBrush and set its properties
SolidBrush brush = new SolidBrush();
brush.setColor(Color.getBlack());
brush.setOpacity(100);

Size sz = graphics.getImage().getSize();
 // Create an object of Matrix class for transformation
Matrix matrix = new Matrix();

// First a translation then a rotation                
matrix.translate(sz.getWidth() / 2, sz.getHeight() / 2);             
matrix.rotate(-45.0f);

// Set the Transformation through Matrix
graphics.setTransform(matrix);

// Draw a string using the SolidBrush and Font objects at specific point
graphics.drawString("Watermark by Aspose.Imaging for Java", font, brush, 0, 0);

// Save image
image.save("watermarked-image.png");

add-watermark-to-image.java

// Load image
com.aspose.imaging.Image image = com.aspose.imaging.Image.load("image.png");

// Create and initialize an instance of Graphics class
Graphics graphics= new Graphics(image);

// Creates an instance of Font
Font font = new Font("Times New Roman", 16, FontStyle.Bold);

// Create an instance of SolidBrush and set its properties
SolidBrush brush = new SolidBrush();
brush.setColor(Color.getBlack());
brush.setOpacity(100);

// Draw a string using the SolidBrush and Font objects at specific point
graphics.drawString("Watermark by Aspose.Imaging for Java", font, brush, new PointF(image.getWidth()-100, image.getHeight()-100));

// Save image
image.save("watermarked-image.png");