Sled 17k 22 22 gold badges silver badges bronze badges. JmRag JmRag 1, 6 6 gold badges 16 16 silver badges 49 49 bronze badges. It's not the same since I don't want to donwload a whole site but a file of it! Thanks though! It is the same. That question is NOT asking about how to download a whole site.
Add a comment. Active Oldest Votes. Improve this answer. Pshemo Pshemo k 23 23 gold badges silver badges bronze badges. BufferedReader; import java.
BufferedWriter; import java. FileWriter; import java. InputStream; import java. InputStreamReader; import java. URL; import javax. To do so using NIO. Jan Tibar Jan Tibar 29 5 5 bronze badges.
Timo Geusch Timo Geusch Get help from this class it get code and filter some information. Hossein Amiri 2, 1 1 gold badge 13 13 silver badges 35 35 bronze badges. Sohaib Aslam Sohaib Aslam 14 14 silver badges 22 22 bronze badges.
Jetty has an HTTP client which can be use to download a web page. HttpClient; import org. GET url ; System. Jan Bodnar Jan Bodnar 9, 5 5 gold badges 56 56 silver badges 67 67 bronze badges.
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Follow Author. Comments Henzhi Mkali says:. May 23, at am. Jagdeep says:. May 8, at am. February 21, at pm. Pankaj says:. Nuwanga G. July 25, at pm. Ravi says:. June 4, at am. The main advantage that the Java NIO package offers is that it's non-blocking, and has channeling and buffering capabilities. When we use the Java IO library we work with streams that read data byte by byte. However, the Java NIO package uses channels and buffers. The buffering and channeling capabilities allow the system to copy contents from a URL directly into the intended file without needing to save the bytes in application memory, which would be an intermediary step.
The ability to work with channels boosts performance. The downloaded contents will be transferred to a file on the local system via the corresponding file channel. After defining the file channel we will use the transferFrom method to copy the contents read from the readChannel object to the file destination using the writeChannel object. The transferFrom and transferTo methods are much more efficient than working with streams using a buffer.
The transfer methods enable us to directly copy the contents of the file system cache to the file on the system. Thus direct channeling restricts the number of context switches required and enhances the overall code performance. Now, in the following sections, we will be looking at ways to download files from a URL using third-party libraries instead of core Java functionality components.
Now you may be thinking why would we use this when Java has its own set of libraries to handle IO operations. However, Apache Commons IO overcomes the problem of code rewriting and helps avoid writing boilerplate code. In order to start using the Apache Commons IO library, you will need to download the jar files from the official website. When you are done downloading the jar files, you need to add them to use them. If you are using an Integrated Development Environment IDE such as Eclipse , you will need to add the files to the build path of your project.
There is only a single line of code required to download a file, which looks like:.
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