Download a prompted file from internet in java

Here is how you can use it:. Java NIO is an alternative package to handle networking and input-output operations in Java. 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.

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Viewed 18k times. Image of the pop up I have to click on the Save button. I am new so I can't understand the problem. Please help me out. Andersson Add a comment. Active Oldest Votes. I had the same problem. No spam ever, unsubscribe at any time.

How to download and save a file from Internet in Java. You might also like 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. Asked 6 years, 3 months ago. Active 8 months ago. Viewed 13k times. Have you found a solution for this?

GabrielBourgault No I couldn't find. From my understanding I found that it's not in reach to verify — msbyuva. Add a comment. Active Oldest Votes. WinActivate "Save" ; Thread. Sleep ; autoit. Raluca Raluca 21 1 1 bronze badge. You can try this code.