Ernie Rael created LOG4J2-3420:
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Summary: getlogger() UnsupportedOperationException when loaded by
Class.forName()
Key: LOG4J2-3420
URL: https://issues.apache.org/jira/browse/LOG4J2-3420
Project: Log4j 2
Issue Type: Bug
Components: API
Affects Versions: 2.17.2
Environment: Several versions of log4j 2.
Tried with several versions of jdk (the exception shown is jdk-17).
Reporter: Ernie Rael
Exception arises when this class is used in the NetBeans guiBuilder.
{code:java}
public class MyTextField extends JTextField {
final private static Logger logger = LogManager.getLogger();
public MyTextField(){}
}
{code}
Get the following exception when the bean is selected to drop on the gui.
{noformat}
INFO [org.netbeans.modules.form.MetaComponentCreator]: Cannot load component
class play.MyTextField from unknown source.
The class itself was found, but there was a problem initializing it, e.g. due
to an exception in static initializer, or failure in loading an additional
class needed by the component class. Check the attached exception.
java.lang.UnsupportedOperationException: No class provided, and an appropriate
one cannot be found.
at org.apache.logging.log4j.LogManager.callerClass(LogManager.java:573)
at org.apache.logging.log4j.LogManager.getLogger(LogManager.java:598)
at org.apache.logging.log4j.LogManager.getLogger(LogManager.java:585)
at play.MyTextField.<clinit>(MyTextField.java:35)
Caused: java.lang.ExceptionInInitializerError
at java.base/java.lang.Class.forName0(Native Method)
at java.base/java.lang.Class.forName(Class.java:467)
at
org.netbeans.modules.form.project.ClassPathUtils.loadClass(ClassPathUtils.java:89)
{noformat}
As a workaround, since I can compile the gui component, I'm invoking
Stuff.getLogger()
{code:java}
public class Stuff {
static Logger getLogger() {
Logger logger;
try {
return LogManager.getLogger(StackLocatorUtil.getCallerClass(2));
} catch(UnsupportedOperationException ex) {}
return LogManager.getRootLogger();
}
}
{code}
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