The exists() function is a part of the File class in Java. This function determines whether the is a file or directory denoted by the abstract filename exists or not. The function returns true if the abstract file path exists or else returns false.
Syntax:
public boolean exists()
file.exists()
Parameters: This method does not accept any parameter.
Return Value: The function returns the boolean value if the file denoted by the abstract filename exists or not.
Exception: This method throws Security Exception if the write access to the file is denied
Implementation: Consider file on the local directory on a system where local directory be as below provided.
“F:\\program.txt”
Example 1:
// Java Program to Illustrate exists() method of File Class // Importing input output classes import java.io.*;
// Main class public class GFG {
// Main driver method
public static void main(String args[])
{
// Getting the file by creating object of File class
File f = new File( "F:\\program.txt" );
// Checking if the specified file exists or not
if (f.exists())
// Show if the file exists
System.out.println( "Exists" );
else
// Show if the file does not exists
System.out.println( "Does not Exists" );
}
} |
Output:
Exists
Now let us consider the use-case where file is writable (“F:\\program1.txt”)
Example 2:
// Java program to demonstrate // exists() method of File Class // Importing input output classes import java.io.*;
// Main class public class GFG {
// Main driver method
public static void main(String args[])
{
// Getting the file
File f = new File( "F:\\program1.txt" );
// Checking if the specified file
// exists or not
if (f.exists())
// Print message if it exists
System.out.println( "Exists" );
else
// Print message if it does not exists
System.out.println( "Does not Exists" );
}
} |
Output:
Does not Exists