File canExecute() method in Java with Examples

The canExecute() function is a part of File class in Java. This function determines whether the program can execute the specified file denoted by the abstract pathname. If the file path exists and the application is allowed to execute the file, this method will return true. Else it will return false.

Function signature:

public boolean canExecute()

Syntax:



file.canExecute();

Parameters: This function does not accept any parameter.

Return Value: This function returns a boolean value representing whether the specified file can be executed or not.

Exceptions: This method throws Security Exception if the read access to the file is denied

Below programs illustrates the use of canExecute() function:

Example 1: The file “F:\\program.txt” is an existing file in F: directory and the program is allowed the permission to execute the file.

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// Java program to demonstrate
// canExecute() method of File class
  
import java.io.*;
  
public class solution {
  
    // Driver Code
    public static void main(String args[])
    {
  
        // Get the file to be executed
        File f = new File("F:\\program.txt");
  
        // Check if this file
        // can be executed or not
        // using canExecute() method
        if (f.canExecute()) {
  
            // The file is can be executed
            // as true is returned
            System.out.println("Executable");
        }
        else {
  
            // The file is cannot be executed
            // as false is returned
            System.out.println("Non Executable");
        }
    }
}

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Output:

Executable

Example 2: The file “F:\\program1.txt” does not exist we will try to check if the file is executable or not.

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// Java program to demonstrate
// canExecute() method of File class
  
import java.io.*;
  
public class solution {
  
    // Driver Code
    public static void main(String args[])
    {
  
        // Get the file to be executed
        File f = new File("F:\\program1.txt");
  
        // Check if this file
        // can be executed or not
        // using canExecute() method
        if (f.canExecute()) {
  
            // The file is can be executed
            // as true is returned
            System.out.println("Executable");
        }
        else {
  
            // The file is cannot be executed
            // as false is returned
            System.out.println("Non Executable");
        }
    }
}

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Output:

Non Executable

Note: The programs might not run in an online IDE. Please use an offline IDE and set the path of the file.



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Second year Department of Information Technology Jadavpur University

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