Program
import java.io.File;
class FileSetWritable
{
public static void main(String args[])
{
try {
File f = new File("java");
if (f.setWritable(true))
{
System.out.println("Writable permission is set");
}
else
{
System.out.println("Writable permission cannot be set");
}
}
catch (Exception e)
{
e.printStackTrace();
}
}
}
Output
Writable permission cannot be set
Description
public boolean setWritable​(boolean writable)
A convenience method to set the owner’s write permission for this abstract pathname. On some platforms it may be possible to start the Java virtual machine with special privileges that allow it to modify files that disallow write operations.
An invocation of this method of the form file.setWritable(arg) behaves in exactly the same way as the invocation
file.setWritable(arg, true)
Parameters:
writable – If true, sets the access permission to allow write operations; if false to disallow write operations
Returns:
true if and only if the operation succeeded. The operation will fail if the user does not have permission to change the access permissions of this abstract pathname.
Throws:
SecurityException – If a security manager exists and its SecurityManager.checkWrite(java.lang.String) method denies write access to the file
