8205626: Start of release updates for JDK 13
8205393: Add SourceVersion.RELEASE_13
8205394: Add source 13 and target 13 to javac
8205645: Bump maximum recognized class file version to 57 for JDK 13
8214825: Update preview language features for start of JDK 13
Reviewed-by: erikj, alanb, mchung, mcimadamore, dholmes, smarks, jjg
/*
* Copyright (c) 2018, 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 8206986
* @summary Verify behavior when an intersection type is inferred for switch expression.
* @compile --enable-preview -source 13 ExpressionSwitchIntersectionTypes.java
* @run main/othervm --enable-preview ExpressionSwitchIntersectionTypes
*/
public class ExpressionSwitchIntersectionTypes<X extends java.io.Serializable & Runnable> {
void test1(int i, X x) {
Runnable r1 = switch (i) {
default -> x;
};
r1.run();
}
void test2(int i, X x) {
(switch (i) {
default -> x;
}).run();
}
public static void main(String[] args) {
ExpressionSwitchIntersectionTypes t = new ExpressionSwitchIntersectionTypes();
try {
t.test1(0, "");
throw new AssertionError("Expected exception didn't occur.");
} catch (ClassCastException ex) {
//good
}
try {
t.test2(0, "");
throw new AssertionError("Expected exception didn't occur.");
} catch (ClassCastException ex) {
//good
}
}
}