1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
|
/*
* Copyright (c) 2021, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @test
* @bug 8262891 8269354
* @summary Test parenthesized pattern
* @compile --enable-preview -source ${jdk.version} Parenthesized.java
* @run main/othervm --enable-preview Parenthesized
*/
public class Parenthesized {
public static void main(String... args) {
new Parenthesized().run();
}
void run() {
Object o = "";
switch (o) {
case (String s && s.isEmpty()) -> System.err.println("OK: " + s);
default -> throw new AssertionError();
}
System.err.println(switch (o) {
case (String s && s.isEmpty()) -> "OK: " + s;
default -> throw new AssertionError();
});
if (o instanceof (String s && s.isEmpty())) {
System.err.println("OK: " + s);
}
boolean b1 = o instanceof (String s && s.isEmpty());
boolean b2 = o instanceof String s && s.isEmpty();
}
}
|
