112  *

   112  *

   113  *

   113  *

   114  * @author Mark Reinhold

   114  * @author Mark Reinhold

   115  * @author JSR-51 Expert Group

   115  * @author JSR-51 Expert Group

   116  * @since 1.4

   116  * @since 1.4

   118  */

   117  */

   119 

   118 

   120 public abstract class FileLock {

   119 public abstract class FileLock {

   121 

   120 

   122     private final Channel channel;

   121     private final Channel channel;

   159         this.size = size;

   158         this.size = size;

   160         this.shared = shared;

   159         this.shared = shared;

   161     }

   160     }

   162 

   161 

   163     /**

   162     /**

   165      *

   164      *

   166      * @param  channel

   165      * @param  channel

   167      *         The channel upon whose file this lock is held

   166      *         The channel upon whose file this lock is held

   168      *

   167      *

   169      * @param  position

   168      * @param  position

   197         this.size = size;

   196         this.size = size;

   198         this.shared = shared;

   197         this.shared = shared;

   199     }

   198     }

   200 

   199 

   201     /**

   200     /**

   203      * Returns the file channel upon whose file this lock was acquired.

   201      * Returns the file channel upon whose file this lock was acquired.

   204      *

   202      *

   205      * <p> This method has been superseded by the {@link #acquiredBy acquiredBy}

   203      * <p> This method has been superseded by the {@link #acquiredBy acquiredBy}

   206      * method.

   204      * method.

   207      *

   205      *

   211     public final FileChannel channel() {

   209     public final FileChannel channel() {

   212         return (channel instanceof FileChannel) ? (FileChannel)channel : null;

   210         return (channel instanceof FileChannel) ? (FileChannel)channel : null;

   213     }

   211     }

   214 

   212 

   215     /**

   213     /**

   217      * Returns the channel upon whose file this lock was acquired.

   214      * Returns the channel upon whose file this lock was acquired.

   218      *

   215      *

   219      * @return  The channel upon whose file this lock was acquired.

   216      * @return  The channel upon whose file this lock was acquired.

   220      *

   217      *

   221      * @since 1.7

   218      * @since 1.7