Java Data Type Tutorial - Java SecurityManager .checkWrite (FileDescriptor fd)

Syntax

SecurityManager.checkWrite(FileDescriptor fd) has the following syntax.

public void checkWrite(FileDescriptor fd)

Example

In the following code shows how to use SecurityManager.checkWrite(FileDescriptor fd) method.

/*from ww  w  .  j ava  2s  .  c om*/
import java.io.FileDescriptor;


public class Main extends SecurityManager {

   public static void main(String[] args) {

      System.setProperty("java.security.policy", "file:/C:/java.policy");

      Main sm = new Main();

      System.setSecurityManager(sm);
      
      FileDescriptor fd=new FileDescriptor();
      sm.checkWrite(fd);

      System.out.println("Allowed!");
   }
}