How to get the filepath of a file in Java
In Java, for NIO Path, we can use path.toAbsolutePath() to get the file path; For legacy IO File, we can use file.getAbsolutePath() to get the file path.For symbolic links or…
How to copy directory in Java
In Java, we can use the Java 1.7 FileVisitor or Apache Commons IO FileUtils.copyDirectory to copy a directory, which includes its sub-directories and files. This article shows a few of…
How to get file extension in Java
This article shows how to get the file extension of a file in Java. This example shows how to use String#lastIndexOf to get the file extension of a file, and…
How to find files with the file extension in Java
This article shows how to Java 8 Files.walk to walk a file tree and stream operation filter to find files that match a specific file extension from a folder and…
How to delete a file in Java
In Java, we can use the NIO Files.delete(Path) and Files.deleteIfExists(Path) to delete a file. The Files.delete(Path) deletes a file, returns nothing, or throws an exception if it fails. If the…
How to append text to a file in Java
This article shows how to use the following Java APIs to append text to the end of a file. (1) Files.write – Append a single line to a file, Java…
Java create and write to a file
In Java, we can use Files.write to create and write to a file. The Files.write also accepts an Iterable interface; it means this API can write a List to a…
How to write to file in Java – BufferedWriter
In Java, we can use BufferedWriter to write content into a file, safety with try-resources in Java 7+. If possible, uses Files.write instead, one line, simple and nice. For Append…
How to read file in Java – FileInputStream
In Java, we use FileInputStream to read bytes from a file, such as an image file or binary file. The FileInputStream.read() reads a byte at a time, and it will…
How to write to file in Java – FileOutputStream
In Java, FileOutputStream is a bytes stream class that’s used to handle raw binary data. To write the data to file, you have to convert the data into bytes and…