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  1. PO
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    <p>I've just been through the whole "getting punished by IDEA" thing and I have this solution for you...</p> <p>Add <a href="http://logback.qos.ch/manual/introduction.html" rel="nofollow">Logback</a> and <a href="https://github.com/weiglewilczek/slf4s" rel="nofollow">slf4s</a> to your POM:</p> <pre><code>&lt;dependency&gt; &lt;groupId&gt;com.weiglewilczek.slf4s&lt;/groupId&gt; &lt;artifactId&gt;slf4s_${scala.version}&lt;/artifactId&gt; &lt;version&gt;1.0.7&lt;/version&gt; &lt;/dependency&gt; &lt;dependency&gt; &lt;groupId&gt;ch.qos.logback&lt;/groupId&gt; &lt;artifactId&gt;logback-core&lt;/artifactId&gt; &lt;version&gt;0.9.30&lt;/version&gt; &lt;/dependency&gt; &lt;dependency&gt; &lt;groupId&gt;ch.qos.logback&lt;/groupId&gt; &lt;artifactId&gt;logback-classic&lt;/artifactId&gt; &lt;version&gt;0.9.30&lt;/version&gt; &lt;/dependency&gt; </code></pre> <p>NOTES:<br/> I've used ${scala.version} in the slf4s artifactId - make sure you have this defined or replace it with 2.9.1 or something like that.<br/> Also - you'll need the scala-tools repo available for dependencies too - which I'm assuming you'll have as I think you need it to compile.</p> <p>Then add a file called logback.xml to your resources folder containing this:</p> <pre><code>&lt;configuration&gt; &lt;appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender"&gt; &lt;encoder&gt; &lt;pattern&gt;%date,%d{HH:mm:ss.SSS},%thread,%-5level,%logger{36},%line,%msg%n&lt;/pattern&gt; &lt;/encoder&gt; &lt;/appender&gt; &lt;root level="TRACE"&gt; &lt;appender-ref ref="STDOUT"/&gt; &lt;/root&gt; &lt;/configuration&gt; </code></pre> <p><em>My pattern there is potentially a bit weird - it's actually from a file appender that spits it out as a CSV I can open and graph in Excel easily.</em></p> <p>Then extend the trait Logging in your app like so:</p> <pre><code>import swing._ import com.weiglewilczek.slf4s.Logging object App extends SwingApplication with Logging { override def startup(args: Array[String]) { logger.info("Starting init...") } } </code></pre> <p>And the info message, "Starting init..." with a bunch of other stuff should appear in the console window.</p> <p>Logback and slf4s are topics that I've linked to.</p> <p>IMPORTANT AND AWESOME:</p> <p>I can't remember what it's called but the logging methods you use to post messages all have signatures like info(message: => String) - as you can see in <a href="https://github.com/weiglewilczek/slf4s/blob/master/src/main/scala/logger.scala" rel="nofollow">logger.scala</a>.</p> <p>This means the expression or block you pass to them will not get executed <em>at all</em> if the relevant level of logging isn't enabled in the config file.</p> <p>So it only adds a method call and a flag-check to the code when it's turned off - which is pretty sweet imho :)</p> <p>Hope that helps, Seth.</p>
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    1. POScalaTest console output in IntelliJ Idea
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    1. USSeth
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      1. VTUpMod
    1. COI've tried your suggestion and nothing changed. Was there anything else you probably forgot to mention? Also I don't quite get how it is in any way related to `SwingApplication`.
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      1. USNikita Volkov
    2. COI use the same technique for my tests as well - it solved the problem for me there too.
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    3. COHrmm - well this wasn't working for me previously and I thought I'd fixed it through logging but now System.out is working as well. The only change I can think of is that I shifted my IDEA project out of my source control dir into a completely external location - I don't change any IDEA settings except font and code style and stuff. Sorry that didn't work - do try disabling breakpoints and things like that - the "Any Exception" breakpoint in particular has been causing me many problems.
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