SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/Users/Mike/.m2/repository/org/jlab/coat/coat-libs/5.1-SNAPSHOT/coat-libs-5.1-SNAPSHOT.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/Users/Mike/.m2/repository/org/slf4j/slf4j-log4j12/1.7.16/slf4j-log4j12-1.7.16.jar!/org/slf4j/impl/StaticLoggerBinder.class]

<dependency>
        <groupId>org.jlab.coat</groupId>
        <artifactId>coat-libs</artifactId>
        <version>5.1-SNAPSHOT</version>
        <exclusions>
            <exclusion>
                <groupId>org.slf4j</groupId>
                <artifactId>slf4j-log4j12</artifactId>
            </exclusion>
        </exclusions>
    </dependency>

[INFO] com.IKP:DCdatabase:jar:0.0.1-SNAPSHOT
[INFO] +- org.jlab.coat:coat-libs:jar:5.1-SNAPSHOT:compile
[INFO] +- org.apache.spark:spark-core_2.11:jar:2.2.1:compile
...
...
...
[INFO] |  +- org.slf4j:slf4j-api:jar:1.7.16:compile
[INFO] |  +- org.slf4j:jul-to-slf4j:jar:1.7.16:compile
[INFO] |  +- org.slf4j:jcl-over-slf4j:jar:1.7.16:compile
[INFO] |  +- log4j:log4j:jar:1.2.17:compile
[INFO] |  +- org.slf4j:slf4j-log4j12:jar:1.7.16:compile

Logger.getLogger("org.apache.spark.SparkContext").setLevel(Level.WARN);
    Logger.getLogger("org").setLevel(Level.OFF);
    Logger.getLogger("akka").setLevel(Level.OFF);