#encoding: utf-8

require 'singleton'
require 'java'

java_import org.slf4j.Logger;
java_import org.slf4j.LoggerFactory;
java_import 'ch.qos.logback.classic.LoggerContext';
java_import 'ch.qos.logback.core.Context';
java_import 'ch.qos.logback.core.util.StatusPrinter';

  class Wisper
    include Singleton
    include Java::ChQosLogbackCore.Context
    #include Java::ChQosLogbackClassic.LoggerContext

    def test0(name)
      lc = LoggerFactory.getILoggerFactory
      StatusPrinter.print(lc)
      # ↑ this call return
      # org.jruby.exceptions.RaiseException: (NameError) no method 'print' for arguments (org.slf4j.impl.Slf4jLoggerFactory) on Java::ChQosLogbackCoreUtil::StatusPrinter
    end

    def test1(name)
      lc = LoggerFactory.getILoggerFactory
      stprint = StatusPrinter.java_method :print, [Context.java_class]
      stprint.call(lc)
      # ↑ this call return
      # org.jruby.exceptions.RaiseException: (TypeError) failed to coerce org.slf4j.impl.Slf4jLoggerFactory to ch.qos.logback.core.Context
    end

    def test2(name)
      lc = LoggerFactory.getILoggerFactory.to_java(LoggerContext.java_class)
      # ↑ this call return
      # org.jruby.exceptions.RaiseException: (TypeError) unable to convert to type: ch.qos.logback.classic.LoggerContext
      stprint = StatusPrinter.java_method :print, [Context.java_class]
      stprint.call(lc)
    end

    def test3(name)
      lc = LoggerFactory.getILoggerFactory
      stprint = StatusPrinter.java_method :print, [Context.java_class]
      stprint.call(lc.java_object)
      # ↑ this call return
      # org.jruby.exceptions.RaiseException: (NoMethodError) undefined method `getStatusManager' for #<Java::JavaObject:0x7cfecfcb>`
    end

  end


Wisper.instance.test3('mylogger')