java_gen: add logback, logback config
diff --git a/java_gen/pre-written/pom.xml b/java_gen/pre-written/pom.xml
index e516b6e..cc480df 100644
--- a/java_gen/pre-written/pom.xml
+++ b/java_gen/pre-written/pom.xml
@@ -60,6 +60,16 @@
<artifactId>slf4j-api</artifactId>
<version>1.7.5</version>
</dependency>
+ <dependency>
+ <groupId>ch.qos.logback</groupId>
+ <artifactId>logback-core</artifactId>
+ <version>1.0.13</version>
+ </dependency>
+ <dependency>
+ <groupId>ch.qos.logback</groupId>
+ <artifactId>logback-classic</artifactId>
+ <version>1.0.13</version>
+ </dependency>
</dependencies>
<build>
<plugins>