Useful File java.io Mini API
useful-file-java-io-mini-api Java io is a very extensive library. There are numerous ways and combinations to write/read data on a file. This article summaries some very useful classes in java.io package. Here is a table from OCP Java SE 8 Programmer II Exam Guide (Exam 1Z0-809) that summarizes the basic classes in file io. java.io Class Extends From Key Constructor(s) Key Methods File Object File, String String String, String createNewFile() delete() exists() isDirectory() isFile() list() mkdir() renameTo() FileWriter Writer File String close() flush() write() BufferedWriter Writer Writer close() flush() newLine() write() PrintWriter Writer File String OuputStream Writer close() flush() format() printf() print() println() write() FileOutputStream OutputStream File String close() write() FileReader Reader File String read() BufferedReader Reader Reader read() readLine() FileInputStream InputStream F