Displaying byte files

Hi, as part of an assignment i have to display the contents of a byte file which is inside a zip file using a java swing component. There is .exe file there and i would like to display the contents of it. I have

Code java:

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 ZipEntry entry = instream.getNextEntry();

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. The instream is a ZipInputStream object. What should i use or do next in order to get the contents of the byte file and display them. Thanks for anyone's help.

You need to get the InputStream for the ZipEntry. I presume at this point you have a ZipFile object from which you got the ZipEntry - ZipFile has a method getInputStream

Code :

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InputStream is = myZipFile.getInputStream(myZipEntry);

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From there you can read the file. If this doesn't make much sense, I recommend reading the API of both of those classes, and the following: Lesson: Basic I/O (The Java™ Tutorials > Essential Classes)

Quote:

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Originally Posted by copeg

You need to get the InputStream for the ZipEntry. I presume at this point you have a ZipFile object from which you got the ZipEntry - ZipFile has a method getInputStream

Code :

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InputStream is = myZipFile.getInputStream(myZipEntry);

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From there you can read the file. If this doesn't make much sense, I recommend reading the API of both of those classes, and the following: Lesson: Basic I/O (The Java™ Tutorials > Essential Classes)

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I don't have a ZipFile object. I had to write a program that expands a zip file that contains four files.. two .txt files and two .exe files and display and modify contents of these files. I was able to work with the .txt files as shown below in my code but in the else statement where i wish to deal with the .exe files.. i am stuck. I get confused with all these different input stream classes. I want to be able to display the contents of both the .exe files and then join them together. I appreciate your help if you can.

Code java:

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ZipInputStream instream = new ZipInputStream(new FileInputStream(
					choosefile));
 
			while (i < 4) {
 
				ZipEntry entry = instream.getNextEntry();
 
				filename = entry.getName();
 
				//ZipFile myzip = new ZipFile(filename);
 
				System.out.println(filename + " being processed..");
 
				if (filename.endsWith(".txt")) {
					BufferedReader br = new BufferedReader(
							new InputStreamReader(instream));
					while ((line = br.readLine()) != null) {
						String revline = reverseString(line);
						String wordrev = wordPairReverse(line);
						writeout.append(revline);
						writeout.newLine();
						writeout2.append(wordrev);
						writeout2.newLine();
 
					}
 
				}
 
				else{
					// stuck here ...  ...
				}

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See the following link, which has a demonstration on reading the byte's from a ZipEntry using a ZipInputStream
Compressing and Decompressing Data Using Java