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 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 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(          // 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()
FileSystem getFileStores() Method in Java with Examples
FileSystem getSeparator() method in Java with Examples
FileSystem getRootDirectories() method in Java with Examples
FileSystem isReadOnly() method in Java with Examples
java.nio.file.FileSystem class in java
Java.util.Collections.rotate() Method in Java with Examples
Java.util.Collections.disjoint() Method in java with Examples
Java 8 | ArrayDeque removeIf() method in Java with Examples
Java lang.Long.lowestOneBit() method in Java with Examples
Java lang.Long.numberOfTrailingZeros() method in Java with Examples
Please Login to comment…