Like, i want to read a zipped file in HDD and i want to save it in a another location. Now how i shall connect the above two codes and make the code to read a zip file and write it in a different location. This is how a simple copy operation is performed, you don't have to unzip the file and then zip it back on another location on HDD. Your question seems to be more of how to connect an input stream and an output stream, reading from one and writing from the other. The answer is to use a while loop that reads chunks from the input and writes them to the output.
Something like this;. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. How to read and write a zip file in java? Ask Question. FileSystem should be closed after the operation. In the java 8 version, Files. Because of the condition in while , the loop might never break: while entry! Can't we just use while zip. Shatir hopefully you've tried this and realized that there wouldn't be a reference to the ZipEntry for use inside the while block.
Harinder Harinder 2 2 gold badges 3 3 silver badges 21 21 bronze badges. Vilius Vilius 77 3 3 bronze badges. FileNotFoundException; import java. FileOutputStream; import java. IOException; import java. MalformedURLException; import java. URL; import java. Scanner; import java. Stream; import java. ZipEntry; import java. ZipFile; import java. Sign up or log in Sign up using Google. Sign up using Facebook. The same open options used by the newOutputStream methods are supported, in addition to one more option: READ is required because the SeekableByteChannel supports both reading and writing.
Specifying READ opens the channel for reading. If none of these options are specified, then the channel is opened for reading. This code creates a log file or appends to the log file if it already exists. For example, if, at the time of creation, you want a file to have a particular set of file permissions, use the createFile method to do so. If you do not specify any attributes, the file is created with default attributes.
If the file already exists, createFile throws an exception. In a single atomic operation, the createFile method checks for the existence of the file and creates that file with the specified attributes, which makes the process more secure against malicious code.
If you open a new output stream and close it immediately, an empty file is created. The first method allows the code to specify a directory for the temporary file and the second method creates a new file in the default temporary-file directory. Both methods allow you to specify a suffix for the filename and the first method allows you to also specify a prefix.
You can list all entries contained in a ZipFile using the entries method. Here is an example of calling the ZipFile entries :. You can iterate the Enumeration returned by the entries method like this:. There is no easy way to unzip all entries of a ZipFile. You will have to do that yourself. To make it easier for you, I will show you an example of the code needed to unzip all entries in a Java ZipFile.
Here is the code:. The example of unzipping all entries of a ZipFile into a directory is vulnerable to the Zip Slip attack. This way the final path of the file could end up being outside the directory into which the ZipFile is requested unzipped to.
Let's look at an example:. An entry in the ZipFile has the relative path..
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