1 /*
2  * Copyright (c) 2018, 2019, Oracle and/or its affiliates. All rights reserved.
3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4  *
5  * This code is free software; you can redistribute it and/or modify it
6  * under the terms of the GNU General Public License version 2 only, as
7  * published by the Free Software Foundation.
8  *
9  * This code is distributed in the hope that it will be useful, but WITHOUT
10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12  * version 2 for more details (a copy is included in the LICENSE file that
13  * accompanied this code).
14  *
15  * You should have received a copy of the GNU General Public License version
16  * 2 along with this work; if not, write to the Free Software Foundation,
17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18  *
19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20  * or visit www.oracle.com if you need additional information or have any
21  * questions.
22  */
23 
24 /*
25  * @test
26  * @bug 8206986
27  * @summary Check switch expressions
28  * @compile ExpressionSwitchCodeFromJLS.java
29  * @run main ExpressionSwitchCodeFromJLS
30  */
31 
32 public class ExpressionSwitchCodeFromJLS {
howMany(int k)33     static void howMany(int k) {
34         switch (k) {
35             case 1: System.out.print("one ");
36             case 2: System.out.print("too ");
37             case 3: System.out.println("many");
38         }
39     }
howManyRule(int k)40     static void howManyRule(int k) {
41         switch (k) {
42             case 1 -> System.out.println("one");
43             case 2 -> System.out.println("two");
44             case 3 -> System.out.println("many");
45         }
46     }
howManyGroup(int k)47     static void howManyGroup(int k) {
48         switch (k) {
49             case 1: System.out.println("one");
50                 break;  // exit the switch
51             case 2: System.out.println("two");
52                 break;  // exit the switch
53             case 3: System.out.println("many");
54                 break;  // not needed, but good style
55         }
56     }
main(String[] args)57     public static void main(String[] args) {
58         howMany(3);
59         howMany(2);
60         howMany(1);
61         howManyRule(1);
62         howManyRule(2);
63         howManyRule(3);
64         howManyGroup(1);
65         howManyGroup(2);
66         howManyGroup(3);
67     }
68 }
69