FileSystem isOpen() method in Java with Examples Last Updated : 03 Dec, 2019 Comments Improve Suggest changes Like Article Like Report The isOpen() method of a FileSystem class is used to return true if file system is open. This method is very helpful to know filesystem is open or not. File systems created by the default provider are always open. Syntax: public abstract boolean isOpen() Parameters: This method accepts nothing. Return value: This method returns true if, and only if, this file system is open. Below programs illustrate the isOpen() method: Program 1: Java // Java program to demonstrate // FileSystem.isOpen() method import java.nio.file.FileSystem; import java.nio.file.Path; import java.nio.file.Paths; public class GFG { public static void main(String[] args) { // create the object of Path Path path = Paths.get( "C:\\Movies\\document.txt"); // get FileSystem object FileSystem fs = path.getFileSystem(); // apply isOpen() methods boolean answer = fs.isOpen(); // print System.out.println("isOpen: " + answer); } } Output: Program 2: Java // Java program to demonstrate // FileSystem.isOpen() method import java.nio.file.FileSystem; import java.nio.file.Path; import java.nio.file.Paths; public class GFG { public static void main(String[] args) { // create the object of Path Path path = Paths.get( "E:// Tutorials// file.txt"); // get FileSystem object FileSystem fs = path.getFileSystem(); // apply isOpen() methods boolean answer = fs.isOpen(); // print System.out.println(fs + " is Open: " + answer); } } Output: References: https://docs.oracle.com/javase/10/docs/api/java/nio/file/FileSystem.html#isOpen() Comment More infoAdvertise with us Next Article FileSystem isOpen() method in Java with Examples A AmanSingh2210 Follow Improve Article Tags : Java Java-Functions java.nio.file package Java-FileSystem Practice Tags : Java Similar Reads FileSystem isReadOnly() method in Java with Examples The isReadOnly() method of a FileSystem class is used to check whether or not this file system allows only read-only access to its file stores. If the file system allows only read access to its file stores then this method will return true, else false. Syntax: public abstract boolean isReadOnly() Pa 2 min read File isFile() method in Java with Examples The isFile() function is a part of File class in Java. This function determines whether the is a file or Directory denoted by the abstract filename is File or not. The function returns true if the abstract file path is File else returns false. Function signature: public boolean isFile() Syntax: file 2 min read FileStore isReadOnly() method in Java with Examples The isReadOnly() method of a FileStore class is used to return true if this file store is read-only else false. A file store is called read-only if it does not support write operations or other changes to files. An IOException to be thrown if an attempt to create a file, open an existing file for wr 2 min read Path getFileSystem() method in Java with Examples The Path interface was added to Java NIO in Java 7. The Path interface is located in the java.nio.file package, so the fully qualified name of the Java Path interface is java.nio.file.Path. A Java Path instance represents a path in the file system. A path can use to locate either a file or a directo 2 min read Files isWritable() method in Java with Examples isWritable() method of java.nio.file.Files help us to check whether Java virtual machine has appropriate privileges that would allow it to open this file for writing or not. It means this method test file is writable or not. This method checks that a file exists or not and if file exists then it is 2 min read Like