Single barebones Java file using slf4j package - 2 imports; Default package. barebones logbackxml - directly under classpath - which is 'current directory'. The log statements in file seen on console, but no FileAppender (file) created. Messing with logback.xml syntax makes no difference - means it is simply not read by the program. I can use help. This is my first trial with logback; only used log4j a while back. no groovy or maven nothing. plain command line javac and java. Java: import org.slf4j.Logger; import org.slf4j.LoggerFactory; public class NMSLogger { private final Logger nmsLogger = LoggerFactory.getLogger(NMSLogger.class); public void sayHello(String name) { nmsLogger.info("INFO: Hi, {}", name); nmsLogger.info("INFO:Welcome to the NBN NMS LogBack World. Hello World!\n"); nmsLogger.error("EROR:Welcome to the NBN NMS LogBack World. Hello World!\n"); } public static void main(String[] args) { NMSLogger theLogger = new NMSLogger(); theLogger.sayHello("srccodes.com"); } } ------------- logback.xml: <configuration> <appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender"> <File>logFile.log</File> <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy"> <FileNamePattern> logFile.%d{yyyy-MM-dd}.log.zip </FileNamePatter> </rollingPolicy> <layout class="ch.qos.logback.classic.PatternLayout"> <Pattern> %d{HH:mm:ss,SSS} [%thread] %-5level %logger{22} - %msg%n </Pattern> </layout> <root level="${root-level:-debug}"> <appender-ref ref="FILE"/> </root> </appender> </configuration> ----------- dir: logback.xml NMSLogger.class NMSLogger.java slf4j-api-1.7.5.jar* slf4j-jdk14-1.7.5.jar ========== Any help, pointers please? -- View this message in context: http://logback.10977.n7.nabble.com/Simplest-Java-sample-Simplest-logback-xml... Sent from the Users mailing list archive at Nabble.com.