How to write a UTF-8 file in Java
In Java, the OutputStreamWriter accepts a charset to encode the character streams into byte streams. We can pass a StandardCharsets.UTF_8 into the OutputStreamWriter constructor to write data to a UTF-8…
How to copy file in Java
This article shows four ways to copy a file in Java: (1) Files.copy (NIO), (2) Apache Commons IO, (3) Guava, (4) Plain Java. In Java 7+, the NIO Files.copy is…
How to get file last modified date in Java
In Java, we can use Files.readAttributes() to get the file metadata or attribute, and then lastModifiedTime() to display the last modified date of a file. For legacy IO, we can…
How to format FileTime in Java
In Java, we can use DateTimeFormatter to convert the FileTime to other custom date formats.
Java – Update last modified date of a file
In Java, we can use the NIO Files.setLastModifiedTime(path, FileTime) to update the last modified date or time of a file. For legacy IO java.io.File, we can use File.setLastModified() to update…
Java Files.find examples
The Files.find API is available since Java 8. It searches or finds files from a file tree quickly. Examples: Find files by filename, Find files by file size, Find files…
Java – Read a file from resources folder
In Java, we can use getResourceAsStream or getResource to read a file or multiple files from a resources folder or root of the classpath. The getResourceAsStream method returns an InputStream.…
How to convert InputStream to File in Java
Below are some Java examples of converting InputStream to a File. Plain Java – FileOutputStream, Apache Commons IO – FileUtils.copyInputStreamToFile, Java 7 – Files.copy, Java 9 – InputStream.transferTo