Java實現(xiàn)一個特定類型的對象稱為BufferedImage圖像在Java中。可以從幾個不同的圖像讀取BufferedImage類型(即BMP HEIC,等等)。不是所有這些都是由ImageIO本身,但也有插件擴展ImageIO例如Apache成像和JDeli和其他庫。

在Java本身,所有各種圖像類型隱藏的復(fù)雜性,我們只有在BufferedImage工作。Java提供了直接訪問圖像像素和顏色信息,并允許轉(zhuǎn)換和圖像處理。

類需要執(zhí)行讀寫操作:

1. io .讀寫文件:一個圖像文件,我們必須導(dǎo)入文件類。這個類代表文件和目錄路徑名。

2. io .IOException:處理錯誤,我們使用IOException類。

3. java.awt.image。BufferedImage:保存圖像,我們創(chuàng)建BufferedImage對象;我們使用BufferedImage類。該對象用于存儲在RAM中。

4. javax.imageio。ImageIO: p

// Java program to demonstrate read and write of image
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
public class MyImage {
	public static void main(String args[])
		throws IOException
	{
		// width of the image
		int width = 963;
		// height of the image
		int height = 640;
		// For storing image in RAM
		BufferedImage image = null;
		// READ IMAGE
		try {
			File input_file = new File(
				"C:/Users/hp/Desktop/Image Processing in Java/gfg-logo.png");
			// image file path create an object of
			// BufferedImage type and pass as parameter the
			// width, height and image int
			// type. TYPE_INT_ARGB means that we are
			// representing the Alpha , Red, Green and Blue
			// component of the image pixel using 8 bit
			// integer value.
			image = new BufferedImage(
				width, height, BufferedImage.TYPE_INT_ARGB);
			// Reading input file
			image = ImageIO.read(input_file);
			System.out.println("Reading complete.");
		}
		catch (IOException e) {
			System.out.println("Error: " + e);
		}
		// WRITE IMAGE
		try {
			// Output file path
			File output_file = new File(
				"C:/Users/hp/Desktop/Image Processing in Java/gfg.png");
			// Writing to file taking type and path as
			ImageIO.write(image, "png", output_file);
			System.out.println("Writing complete.");
		}
		catch (IOException e) {
			System.out.println("Error: " + e);
		}
	} // main() ends here
} // class ends here

輸出

注意:這段代碼不會在網(wǎng)上IDE運行,因為它需要一個磁盤上的形象。