CODEWITHSUNDEEP
javawindowscmdruntime
Aashima Yuthika
Aashima Yuthika

Reputation: 67

Error Loading Main Class in Java in Windows Command Prompt

I am trying to run an image compression code in Java, and after a long time I am not using an IDE to do so, and am running the code from windows cmd itself.

Here's my code:

import java.io.*;
import java.util.*;
import java.awt.image.*;

import javax.imageio.*;
import javax.imageio.stream.ImageOutputStream;

public class Compression {

   public static void main(String[] args) throws IOException {

      File input = new File("digital_image_processing.jpg");
      BufferedImage image = ImageIO.read(input);

      File compressedImageFile = new File("compress.jpg");
      OutputStream os =new FileOutputStream(compressedImageFile);

      Iterator<ImageWriter>writers =  ImageIO.getImageWritersByFormatName("jpg");
      ImageWriter writer = (ImageWriter) writers.next();

      ImageOutputStream ios = ImageIO.createImageOutputStream(os);
      writer.setOutput(ios);

      ImageWriteParam param = writer.getDefaultWriteParam();

      param.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
      param.setCompressionQuality(0.05f);
      writer.write(null, new IIOImage(image, null, null), param);

      os.close();
      ios.close();
      writer.dispose();
   }
}

In cmd I am in the directory where the Compression.java is present. This is what is happening:

enter image description here

Any suggestions? I have tried all the suggestions given on Stack on similar questions but none of them seem to work for me.

Upvotes: 1

Views: 477

Answers (1)

Andreas
Andreas

Reputation: 159086

Assuming you showed the full code, your class is not in a package, so that's not the issue.

Your issue is likely that the current directory is not in the classpath, by default. Check it with this command:

set CLASSPATH

To run your code directly, use:

java -cp . Compression

This will run Java with the current directory as the only path in the classpath.

Upvotes: 2

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