Autogenerate logger statements using live templates.

IntellijLiveTemplates

<templateSet group="Log4j">
  <template name="log4j" value="private final org.apache.log4j.Logger log = org.apache.log4j.Logger.getLogger(getClass());" description="log4j declaration" toReformat="true" toShortenFQNames="true">
    <context>
      <option name="JAVA_DECLARATION" value="true" />
    </context>
  </template>
  <template name="log4d" value="$LOGGER_VAR$.debug(&quot;$EXPR_COPY$ = &quot; + $EXPR$);" description="log4j debug statement" toReformat="true" toShortenFQNames="true">
    <variable name="LOGGER_VAR" expression="variableOfType(&quot;org.apache.log4j.Logger&quot;)" defaultValue="" alwaysStopAt="false" />
    <variable name="EXPR_COPY" expression="escapeString(EXPR)" defaultValue="" alwaysStopAt="true" />
    <variable name="EXPR" expression="variableOfType(&quot;&quot;)" defaultValue="" alwaysStopAt="true" />
    <context>
      <option name="JAVA_STATEMENT" value="true" />
    </context>
  </template>
  <template name="log4i" value="$LOGGER_VAR$.info(&quot;$EXPR_COPY$ = &quot; + $EXPR$);" description="log4j Info statement" toReformat="true" toShortenFQNames="true">
    <variable name="LOGGER_VAR" expression="variableOfType(&quot;org.apache.log4j.Logger&quot;)" defaultValue="" alwaysStopAt="false" />
    <variable name="EXPR_COPY" expression="escapeString(EXPR)" defaultValue="" alwaysStopAt="true" />
    <variable name="EXPR" expression="variableOfType(&quot;&quot;)" defaultValue="" alwaysStopAt="true" />
    <context>
      <option name="JAVA_STATEMENT" value="true" />
    </context>
  </template>
  <template name="log4e" value="$LOGGER_VAR$.error(&quot;$EXPR_COPY$ = &quot;, $EXPR$);" description="log4j error statement" toReformat="false" toShortenFQNames="true">
    <variable name="LOGGER_VAR" expression="variableOfType(&quot;org.apache.log4j.Logger&quot;)" defaultValue="" alwaysStopAt="false" />
    <variable name="EXPR_COPY" expression="escapeString(EXPR)" defaultValue="" alwaysStopAt="false" />
    <variable name="EXPR" expression="variableOfType(&quot;java.lang.Exception&quot;)" defaultValue="" alwaysStopAt="true" />
    <context>
      <option name="COMPLETION" value="true" />
      <option name="JAVA_STATEMENT" value="true" />
    </context>
  </template>
</templateSet>

create log4j.xml File and paste it in /.IntelliJIdea2017.2/config/templates folder.
Shortcuts for templates
log4j --> Logger variable declaration
log4d --> Logger debug statement
log4i --> Logger info statement
log4e --> Logger error statement