Tue, 21 May 2013 13:50:56 +0100
8005207: test has 2 @bug tags
Reviewed-by: mcimadamore
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22 */
24 /**
25 * @test
26 * @bug 8003280
27 * @summary Add lambda tests
28 * Test that parameter types are inferred from SAM descriptor when method parameters are elided,
29 with different types of method references
30 * @compile MethodRef7.java
31 * @run main MethodRef7
32 */
34 public class MethodRef7 {
36 static interface A {void m();}
38 static interface A2 {void m(int n);}
40 static interface B {String m();}
42 static interface B2 {String m(int n);}
44 static interface C {String m(MethodRef7 mr);}
46 static interface C2 {String m(MethodRef7 mr, int n);}
48 static interface D {Fee<String> m();}
50 static interface D2 {Fee<String> m(String s);}
52 static class Fee<T> {
54 public Fee() {
55 System.out.println("Fee<T> instantiated");
56 }
58 public Fee(String s) {
59 System.out.println("Fee<T> instantiated: " + s);
60 }
61 }
63 private static void assertTrue(boolean cond) {
64 if (!cond)
65 throw new AssertionError();
66 }
68 static void bar() {
69 System.out.println("MethodRef_neg1.bar()");
70 }
72 static void bar(int x) {
73 System.out.println("MethodRef_neg1.bar(int) " + x);
74 }
76 String wahoo() {
77 return "wahoo";
78 }
80 String wahoo(int x) {
81 return "wahoo " + x;
82 }
84 public static void main(String[] args) {
86 A a = MethodRef7::bar; //static reference to bar()
87 a.m();
88 A2 a2 = MethodRef7::bar; //static reference to bar(int x)
89 a2.m(10);
91 MethodRef7 mr = new MethodRef7();
92 B b = mr::wahoo; //instance reference to wahoo()
93 assertTrue(b.m().equals("wahoo"));
94 B2 b2 = mr::wahoo; //instance reference to wahoo(int x)
95 assertTrue(b2.m(1).equals("wahoo 1"));
97 C c = MethodRef7::wahoo; //unbound reference to wahoo()
98 assertTrue(c.m(mr).equals("wahoo"));
99 C2 c2 = MethodRef7::wahoo; //unbound reference to wahoo(int x)
100 assertTrue(c2.m(mr, 2).equals("wahoo 2"));
102 D d = Fee<String>::new; //constructor reference to Fee()
103 D2 d2 = Fee<String>::new; //constructor reference to Fee(String s)
104 }
105 }