![]() Is there any function that I can use in order to do this This piece of code worked only for a. ![]() When we read a large number of bytes, the application performance will be poor, due to a large number of context switches involved.įor writing the bytes read from the URL to our local file, we'll use the write() method from the FileOutputStream class: try (BufferedInputStream in = new BufferedInputStream(new URL(FILE_URL). I want to make a Java application that when executed downloads a file from a URL. This context switch is expensive from a performance perspective. Java offers three different ways to download a file using a URL. This process reads a file from the URL and writes it to a local file. When the JVM invokes the read() system call, the program execution context switches from user mode to kernel mode and back. Downloading a file through a Java code using a URL allows the Java application to download a file directly into a local system from a remote repository or any other local storage. When reading one byte at a time using the read() method, each method call implies a system call to the underlying file system. class in Java provides several methods for reading. The performance increase comes from buffering. When reading from an InputStream, it's recommended to wrap it in a BufferedInputStream to increase the performance. BufferedInputStream in = new BufferedInputStream(new URL(FILE_URL).openStream())
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