JDK-7194897 : JSR 292: Cannot create more than 16 instances of an anonymous class
- Type: Bug
- Component: core-libs
- Affected Version: 7u6
- Priority: P3
- Status: Resolved
- Resolution: Fixed
- OS: solaris_11
- CPU: x86
- Submitted: 2012-08-29
- Updated: 2013-11-22
- Resolved: 2013-11-04
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Resolved: Release in which this issue/RFE has been resolved.
Fixed : Release in which this issue/RFE has been fixed. The release containing this fix may be available for download as an Early Access Release or a General Availability Release.
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Unresolved : Release in which this issue/RFE will be addressed.
Resolved: Release in which this issue/RFE has been resolved.
Fixed : Release in which this issue/RFE has been fixed. The release containing this fix may be available for download as an Early Access Release or a General Availability Release.
To download the current JDK release, click here.
| JDK 8 | Other |
|---|---|
8 b117Fixed  |
port-stage-ppc-aixFixed |
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Description
When a class has been loaded with sun.invoke.anon.AnonymousClassLoader, the seventeenth invocation of Class.newInstance() on that class fails with a NoClassDefFoundError.
Example:
import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import sun.invoke.anon.AnonymousClassLoader;
public class AnonClassTest {
public static void main(String[] args) throws Exception {
AnonymousClassLoader loader = new AnonymousClassLoader();
Class c = loader.loadClass(readClassFile());
for (int i = 0; i < 20; i++) {
System.out.println(i + ": " + c.newInstance());
}
}
private static byte[] readClassFile() throws Exception {
try (InputStream in =
AnonClassTest.class.getResourceAsStream("AnonClassTest.class");
ByteArrayOutputStream out = new ByteArrayOutputStream())
{
int b;
while ((b = in.read()) != -1) {
out.write(b);
}
return out.toByteArray();
}
}
}
Which produces the following output:
0: AnonClassTest/28180264@4ad14c
1: AnonClassTest/28180264@1f2e41d
2: AnonClassTest/28180264@15e4dbe
3: AnonClassTest/28180264@420e44
4: AnonClassTest/28180264@b6a5fb
5: AnonClassTest/28180264@14b1fda
6: AnonClassTest/28180264@1183871
7: AnonClassTest/28180264@12192a9
8: AnonClassTest/28180264@123ce3f
9: AnonClassTest/28180264@1b98cbb
10: AnonClassTest/28180264@c68351
11: AnonClassTest/28180264@d76237
12: AnonClassTest/28180264@7148e9
13: AnonClassTest/28180264@169c9a2
14: AnonClassTest/28180264@34e2cc
15: AnonClassTest/28180264@1b0edb2
Exception in thread "main" java.lang.NoClassDefFoundError: AnonClassTest/28180264
at sun.reflect.GeneratedConstructorAccessor1.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:525)
at java.lang.Class.newInstance0(Class.java:372)
at java.lang.Class.newInstance(Class.java:325)
at AnonClassTest.main(AnonClassTest.java:11)
Caused by: java.lang.ClassNotFoundException: AnonClassTest.28180264
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
... 6 more
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