1 /* 2 * Copyright (c) 2017, 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 * @compile --enable-preview -source 12 ExpressionSwitchFallThrough1.java 28 * @run main/othervm --enable-preview ExpressionSwitchFallThrough1 29 */ 30 31 import java.util.Objects; 32 33 public class ExpressionSwitchFallThrough1 { 34 public static void main(String... args) { 35 new ExpressionSwitchFallThrough1().test(); 36 } 37 38 private void test() { 39 assertEquals("01", printExprFallThrough(0)); 40 assertEquals("1", printExprFallThrough(1)); 41 assertEquals("other", printExprFallThrough(3)); 42 assertEquals("01", printStatementFallThrough(0)); 43 assertEquals("1", printStatementFallThrough(1)); 44 assertEquals("other", printStatementFallThrough(3)); 45 } 46 47 private String printExprFallThrough(Integer p) { 48 String result = ""; 49 return switch (p) { 50 case 0: result += "0"; 51 case 1: result += "1"; 52 break result; 53 default: break "other"; 54 }; 55 } 56 57 private String printStatementFallThrough(Integer p) { 58 String result = ""; 59 switch (p) { 60 case 0: result += "0"; 61 case 1: result += "1"; 62 break ; 63 default: result = "other"; 64 break; 65 } 66 return result; 67 } 68 69 private static void assertEquals(Object expected, Object actual) { 70 if (!Objects.equals(actual, expected)) { 71 throw new AssertionError("Unexpected result: " + actual + ", expected: " + expected); 72 } 73 } 74 }