1/**
2 * Copyright (c) 2023-2024 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http: //www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16interface J{
17    toString(): String {
18        return "";
19    }
20    $_hashCode():int{
21        return 4;
22    }
23}
24
25class JImpl implements J{
26}
27
28function main(): void {
29    let o: JImpl = new JImpl()
30    assert o.$_hashCode() == 4
31}
32
33/* @@? 17:13 Error TypeError: Cannot override non-private method of the class Object from an interface.  */
34/* @@? 17:13 Error TypeError: Method toString(): String in J not overriding any method  */
35/* @@? 20:15 Error TypeError: Cannot override non-private method of the class Object from an interface.  */
36/* @@? 20:15 Error TypeError: Method $_hashCode(): int in J not overriding any method  */
37