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
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
|
/*
* Copyright (c) 2023, 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.
*/
import java.nio.file.Files;
import java.nio.file.Path;
/**
* @test
* @summary test execution priority of main methods
* @run main InstanceMainTest
*/
public class InstanceMainTest extends TestHelper {
private static final String[] SOURCES = new String[] {
// static dominating with args
"""
class MainClass {
static void main() {
throw new AssertionError();
}
static void main(String[] args) {
}
}
""",
// static dominating instance
"""
class MainClass {
void main(String[] args) {
throw new AssertionError();
}
static void main() {
}
}
""",
// instance dominating with args
"""
class MainClass {
void main() {
throw new AssertionError();
}
void main(String[] args) {
}
}
""",
// instance no args
"""
class MainClass {
void main() {
}
}
""",
// unnamed class static dominating with args
"""
static void main() {
throw new AssertionError();
}
static void main(String[] args) {
}
""",
// unnamed class static dominating instance
"""
void main(String[] args) {
throw new AssertionError();
}
static void main() {
}
""",
// unnamed class instance dominating with args
"""
void main() {
throw new AssertionError();
}
void main(String[] args) {
}
""",
// unnamed class instance main no args
"""
void main() {
}
""",
// instance main dominating super static
"""
class MainClass extends SuperClass {
void main() {
}
}
class SuperClass {
void main(String[] args) {
throw new AssertionError();
}
}
""",
// super instance main with args dominating
"""
public class MainClass extends Super {
}
class Super {
public void main(String... args) {
}
public void main() {
throw new AssertionError();
}
}
""",
// ignore super instance main
"""
public class MainClass extends Super {
public static void main(String... args) {
}
}
class Super {
public static void main(String... args) {
throw new AssertionError();
}
}
""",
// enum main
"""
enum MainClass {
A;
public static void main() {
}
}
""",
// record main
"""
record MainClass() {
static void main() {
System.out.println("Done!");
}
}
""",
// interface main
"""
interface MainClass {
static void main() {
System.out.println("Done!");
}
}
"""
};
public static void main(String... args) throws Exception {
for (String source : SOURCES) {
Files.writeString(Path.of("MainClass.java"), source);
var version = System.getProperty("java.specification.version");
var tr = doExec(javaCmd, "--enable-preview", "--source", version, "MainClass.java");
if (!tr.isOK()) {
System.err.println(source);
System.err.println(tr);
throw new AssertionError();
}
}
}
}
|
