Introduction - If you have any usage issues, please Google them yourself
Java to copy files using the Java language demonstration program to copy files with source code, comments, quite wide, through this source, you can learn about the Java file event handling, event handling in the contents of the directory, how to bring up the file selector and determine whether to click the Open button, select the file' s absolute path, how will read an array of bytes written to the output stream of the target file, there are many, and not setting them, you can download the source code reference