Security Java

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import java.io.File;
public class ROW {
  public static void main(String[] args) {
    File filespec = new File("c:\text.txt");
    if (filespec.setWritable(false))
      System.out.println(filespec + " made read-only");
    else
      System.out.println("Permission denied");
    if (filespec.setWritable(true))
      System.out.println(filespec + " made writable");
    else
      System.out.println("Permission denied");
    System.out.println(filespec + " is currently "
        + (filespec.canWrite() ? "writable" : "read-only"));
  }
}