1 /*

     2  * @test  /nodynamiccopyright/

     3  * @bug 6911256 6964740 6965277 6967065

     4  * @author Joseph D. Darcy

     5  * @summary Check that -Xlint:twr warnings are generated as expected

     6  * @compile/ref=TwrLint.out -Xlint:try,deprecation -XDrawDiagnostics TwrLint.java

     7  */

     8 

     9 class TwrLint implements AutoCloseable {

    10     private static void test1() {

    11         try(TwrLint r1 = new TwrLint();

    12             TwrLint r2 = new TwrLint();

    13             TwrLint r3 = new TwrLint()) {

    14             r1.close();   // The resource's close

    15             r2.close(42); // *Not* the resource's close

    16             // r3 not referenced

    17         }

    18 

    19     }

    20 

    21     @SuppressWarnings("try")

    22     private static void test2() {

    23         try(@SuppressWarnings("deprecation") AutoCloseable r4 =

    24             new DeprecatedAutoCloseable()) {

    25             // r4 not referenced - but no warning is generated because of @SuppressWarnings

    26         } catch(Exception e) {

    27             ;

    28         }

    29     }

    30 

    31     /**

    32      * The AutoCloseable method of a resource.

    33      */

    34     @Override

    35     public void close () {

    36         return;

    37     }

    38 

    39     /**

    40      * <em>Not</em> the AutoCloseable method of a resource.

    41      */

    42     public void close (int arg) {

    43         return;

    44     }

    45 }

    46 

    47 @Deprecated

    48 class DeprecatedAutoCloseable implements AutoCloseable {

    49     public DeprecatedAutoCloseable(){super();}

    50 

    51     @Override

    52     public void close () {

    53         return;

    54     }

    55 }