How to Create an Image Placeholder in Java

on December 11, 2017

Post Views: 3,250

Creating an Image Placeholder in Java

In this example, We will show simple program about, How to create an Image Placeholder in Java. The example program has been tested and shared in the same post.

#PlaceholderEngine.java

package com.dineshkrish;
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
/**
* 
* @author Dinesh Krishnan
*
*/
public class PlaceholderEngine {
public void render(int width, int height, File file) {
BufferedImage img = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
// setting all properties for an image.
Graphics graphics = img.getGraphics();
graphics.setColor(Color.LIGHT_GRAY);
graphics.fillRect(0, 0, width, height);
graphics.setColor(Color.BLACK);
graphics.setFont(getFont());
// drawing the string on image
drawString(graphics, width + " x " + height, width, 0, height / 2 + 5);
try {
// creating the image
ImageIO.write(img, "PNG", file);
} catch (IOException e) {
System.out.println(e.getMessage());
}
}
private Font getFont() {
return new Font("Arial Black", Font.ITALIC, 30);
}
private void drawString(Graphics graphics, String s, int width, int XPos,
int YPos) {
int stringLen = (int) graphics.getFontMetrics().getStringBounds(s, graphics).getWidth();
int start = width / 2 - stringLen / 2;
graphics.drawString(s, start + XPos, YPos);
}
}

#ImagePlaceholder.java

package com.dineshkrish;
import java.io.File;
/**
* 
* @author Dinesh Krishnan
*
*/
public class ImagePlaceholder {
public static void main(String[] args) {
int width = 350;
int height = 350;
File file = new File("image.png");
PlaceholderEngine engine = new PlaceholderEngine();
engine.render(width, height, file);
System.out.println("Image created successfully...");
}
}