1 /*
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3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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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
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17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18  *
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22  */
23 
24 /*
25  * @test
26  * @bug 8187222
27  * @run main/othervm -Djava.system.class.loader=RecursiveSystemLoader RecursiveSystemLoader
28  * @summary Test for IllegalStateException if a custom system loader recursively calls getSystemClassLoader()
29  */
30 public class RecursiveSystemLoader extends ClassLoader {
main(String[] args)31     public static void main(String[] args) {
32         ClassLoader sys = ClassLoader.getSystemClassLoader();
33         if (!(sys instanceof RecursiveSystemLoader)) {
34             throw new RuntimeException("Unexpected system classloader: " + sys);
35         }
36     }
RecursiveSystemLoader(ClassLoader classLoader)37     public RecursiveSystemLoader(ClassLoader classLoader) {
38         super("RecursiveSystemLoader", classLoader);
39 
40         // Calling ClassLoader.getSystemClassLoader() before the VM is booted
41         // should throw an IllegalStateException.
42         try {
43             ClassLoader.getSystemClassLoader();
44         } catch(IllegalStateException ise) {
45             System.err.println("Caught expected exception:");
46             ise.printStackTrace();
47             return;
48         }
49         throw new RuntimeException("Expected IllegalStateException was not thrown.");
50     }
51 
52     @Override
loadClass(String name)53     public Class<?> loadClass(String name) throws ClassNotFoundException {
54         return super.loadClass(name);
55     }
56 }
57