Java - File setWritable() Method

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Description

The Java File setWritable(boolean writable, boolean ownerOnly) method to set the owner's or everybody's write permission for this abstract pathname.

Declaration

Following is the declaration for java.io.File.setWritable(boolean writable, boolean ownerOnly) method −

public boolean setWritable(boolean writable, boolean ownerOnly)

Parameters

• writable − true sets the access permission to allow write operations, false denies write operation.

• ownerOnly − true sets the write permission only to the owner's write permission; otherwise, it applies to everybody.

Return Value

This method returns true if the operation succeeded, else false.

Exception

SecurityException − If a security manager exists and its method denies write access to either the old or new pathnames.

Example 1

The following example shows the usage of Java File setWritable() method. We've created a File reference. Then we're creating a File Object using a file path which is present in the given location. Using setWritable() method, we're trying to make the file writable and getting the result in boolean variable. Then we're printing the status of file as writable using canWrite() method and result is printed.

package com.tutorialspoint;
import java.io.File;
public class FileDemo {
   public static void main(String[] args) {      
      File f = null;
      boolean bool = false;
      
      try {     
      
         // create new File objects
         f = new File("F:/test.txt");
         
         // set writable as true for owner
         bool = f.setWritable(true, true);
         
         // prints
         System.out.println("setWritable() succeeded?: "+bool);
         
         // can write
         bool = f.canWrite();
         
         // prints
         System.out.print("Can write?: "+bool);
         
      } catch(Exception e) {
         // if any error occurs
         e.printStackTrace();
      }
   }
}

Output

Let us compile and run the above program, this will produce the following result −

setWritable() succeeded?: true
Can write?: true

Example 2

The following example shows the usage of Java File setWritable() method. We've created a File reference. Then we're creating a File Object using a file path which is present in the given location and was made writable in previous example. Using setWritable() method, we're trying to make the file non-writable and getting the result in boolean variable. Then we're printing the status of file as writable using canWrite() method and result is printed.

package com.tutorialspoint;
import java.io.File;
public class FileDemo {
   public static void main(String[] args) {      
      File f = null;
      boolean bool = false;      
      try {     
      
         // create new File objects
         f = new File("F:/test.txt");
         
         // set writable as true for all
         bool = f.setWritable(true, false);
         
         // prints
         System.out.println("setWritable() succeeded?: "+bool);
         
         // can write
         bool = f.canWrite();
         
         // prints
         System.out.print("Can write?: "+bool);
         
      } catch(Exception e) {
         // if any error occurs
         e.printStackTrace();
      }
   }
}

Output

Let us compile and run the above program, this will produce the following result −

setWritable() succeeded?: true
Can write?: true