jdk8-mips64-public/langtools: test/tools/javac/lambda/LambdaConv21.java@959103a6100f

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http://hg.openjdk.java.net/jdk8u/jdk8u/langtools/
changeset: 2573:53ca196be1ae
tag: jdk8u25-b17

     1 /*

     2  * @test /nodynamiccopyright/

     3  * @bug 8003280

     4  * @summary Add lambda tests

     5  *  check that code generation handles void-compatibility correctly

     6  * @compile/fail/ref=LambdaConv21.out -XDrawDiagnostics LambdaConv21.java

     7  */

     9 class LambdaConv21 {

    11     interface SAM_void<X> {

    12         void m();

    13     }

    15     interface SAM_java_lang_Void {

    16         Void m();

    17     }

    19     static void m_void() { }

    21     static Void m_java_lang_Void() { return null; }

    23     static void testExpressionLambda() {

    24         SAM_void s1 = ()->m_void(); //ok

    25         SAM_java_lang_Void s2 = ()->m_void(); //no - incompatible target

    26         SAM_void s3 = ()->m_java_lang_Void(); //ok - expression statement lambda is compatible with void

    27         SAM_java_lang_Void s4 = ()->m_java_lang_Void(); //ok

    28     }

    30     static void testStatementLambda() {

    31         SAM_void s1 = ()-> { m_void(); }; //ok

    32         SAM_java_lang_Void s2 = ()-> { m_void(); }; //no - missing return value

    33         SAM_void s3 = ()-> { return m_java_lang_Void(); }; //no - unexpected return value

    34         SAM_java_lang_Void s4 = ()-> { return m_java_lang_Void(); }; //ok

    35         SAM_void s5 = ()-> { m_java_lang_Void(); }; //ok

    36         SAM_java_lang_Void s6 = ()-> { m_java_lang_Void(); }; //no - missing return value

    37     }

    38 }

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