22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package sun.security.action;
  27 
  28 import java.io.*;
  29 
  30 import java.security.PrivilegedExceptionAction;
  31 
  32 /**
  33  * A convenience class for opening a FileInputStream as a privileged action.
  34  *
  35  * @author Andreas Sterbenz
  36  */
  37 public class OpenFileInputStreamAction
  38         implements PrivilegedExceptionAction<FileInputStream> {
  39 
  40     private final File file;
  41 



  42     public OpenFileInputStreamAction(File file) {




  43         this.file = file;

  44     }
  45 
  46     public OpenFileInputStreamAction(String filename) {
  47         this.file = new File(filename);

  48     }
  49 
  50     public FileInputStream run() throws Exception {



  51         return new FileInputStream(file);










  52     }
  53 }

  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package sun.security.action;
  27 
  28 import java.io.*;
  29 
  30 import java.security.PrivilegedExceptionAction;
  31 
  32 /**
  33  * A convenience class for opening a FileInputStream as a privileged action.
  34  *
  35  * @author Andreas Sterbenz
  36  */
  37 public class OpenFileInputStreamAction
  38         implements PrivilegedExceptionAction<FileInputStream> {
  39 
  40     private final File file;
  41 
  42     // Return null if the file doesn't exist
  43     private final boolean graceful;
  44 
  45     public OpenFileInputStreamAction(File file) {
  46         this(file, false);
  47     }
  48 
  49     public OpenFileInputStreamAction(File file, boolean graceful) {
  50         this.file = file;
  51         this.graceful = graceful;
  52     }
  53 
  54     public OpenFileInputStreamAction(String filename) {
  55         this.file = new File(filename);
  56         this.graceful = false;
  57     }
  58 
  59     public FileInputStream run() throws Exception {
  60         if (graceful) {
  61             try {
  62                 if (file.exists()) {
  63                     return new FileInputStream(file);
  64                 } else {
  65                     return null;
  66                 }
  67             } catch (FileNotFoundException e) {
  68                 // couldn't find it, oh well.
  69                 return null;
  70             }
  71         } else {
  72             return new FileInputStream(file);
  73         }
  74     }
  75 }