[slf4j-dev] [Bug 146] New: NullPointerException when getILoggerFactory()

[bugzilla-daemon at pixie.qos.ch]

http://bugzilla.slf4j.org/show_bug.cgi?id=146

           Summary: NullPointerException when getILoggerFactory()
           Product: SLF4J
           Version: 1.5.x
          Platform: PC
        OS/Version: Windows XP
            Status: NEW
          Severity: blocker
          Priority: P1
         Component: Core API
        AssignedTo: dev at slf4j.org
        ReportedBy: dapeng.ni at edgenius.com


I got this exception when I run my class in Eclipse:
        log = LoggerFactory.getLogger(SilenceInstall.class);



Exception in thread "main" java.lang.NullPointerException
        at
org.slf4j.LoggerFactory.singleImplementationSanityCheck(LoggerFactory.java:192)
        at
org.slf4j.LoggerFactory.performInitialization(LoggerFactory.java:113)
        at org.slf4j.LoggerFactory.getILoggerFactory(LoggerFactory.java:269)
        at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:242)
        at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:255)
        at 
com.foo.installation.SilenceInstall.main(SilenceInstall.java:99)


It is due to LoggerFactory.class.getClassLoader() returns null in:

  private static void singleImplementationSanityCheck() {
    try {
      Enumeration paths = LoggerFactory.class.getClassLoader().getResources(
          STATIC_LOGGER_BINDER_PATH);
....

According to JavaDoc, getClassLoader() can be null: "Some implementations may
use null to represent the bootstrap class loader. "


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