Zip file cretaed using java not opening

[Kaustav Ganguly]

Hi ,

I created a zip file using java. I have attached the code below. But when I am trying to open it by using 7zip or windows extract all feature they are not able to open the file.
Is it not possible to open zip files created in java by using an archiving tool ? Do I need to write a java code to unzip it ?

File[] fileList = dir.listFiles(); 
			
			
			if (fileList != null) {
				FileInputStream fileInputStream = null;
				for (int index = 0; index < fileList.length; index++) {
					fileInputStream = new FileInputStream(fileList[index]);
					aZipOutputStream.putNextEntry(new ZipEntry(fileList[index].getName()));
					// Transfer bytes from the file to the ZIP file
					int len;
					// Create a buffer for reading the files
					byte[] buf = new byte[1024];
			        while ((len = fileInputStream.read(buf)) > 0) {
			        	aZipOutputStream.write(buf, 0, len);
			        }
				}
				// Complete the entry
		        aZipOutputStream.closeEntry();
		        if (fileInputStream != null) {
		        	fileInputStream.close();
		        }
		        
			}		

Thanks
Kaustav

[Rob Spoor]

Do you close aZipOutputStream itself after you've written and closed all separate entries?