Instead of using &#39;category&#39; use &#39;logger&#39;. Hence, these level are configured for entire log4j, and does not depend on appender, etc.

Following change works:

    log4j.logger.my.pkg=info
    log4j.logger.my.pkg.ab.class1=debug



Copying from my current log4j.properties:

    log4j.logger.org.hibernate.tool.hbm2ddl=warn
    log4j.logger.org.hibernate.sql=info

I am trying to set the ListView textColor to black, since I am using a white background.

Here is my MailActivity

    public class MailActivity extends ListActivity {
    
    	String[] listItems = { &quot;Compose&quot;, &quot;Inbox&quot;, &quot;Drafts&quot;, &quot;Sent&quot; };
    
    	@Override
    	protected void onCreate(Bundle savedInstanceState) {
    		super.onCreate(savedInstanceState);
    		
            setContentView(R.layout.mails);

    		setListAdapter(new ArrayAdapter(this,
    				android.R.layout.simple_list_item_1, listItems));
    
    	}
    }


and my XML

    &lt;?xml version=&quot;1.0&quot; encoding=&quot;utf-8&quot;?&gt;
    &lt;LinearLayout 
        xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot;
    	android:orientation=&quot;vertical&quot; 
        android:layout_width=&quot;fill_parent&quot;
    	android:layout_height=&quot;fill_parent&quot; 
        android:background=&quot;#FFFFFF&quot;&gt;
    	
        &lt;ListView 
            android:id=&quot;@android:id/list&quot; 
            android:layout_width=&quot;fill_parent&quot;
    		android:layout_height=&quot;wrap_content&quot;/&gt;
    	
        &lt;TextView 
            android:id=&quot;@android:id/empty&quot; 
            android:layout_width=&quot;wrap_content&quot;
    		android:layout_height=&quot;wrap_content&quot; 
            android:text=&quot;Empty set&quot; 
            android:textColor=&quot;#000000&quot; /&gt;

    &lt;/LinearLayout&gt;

I&#39;m getting the background as white, but am not sure where to set the foreground to black. I&#39;ve tried in the xml and looks like it&#39;s not helping.

Android ListView Text Color

Please, what is the device with the minimum screen resolution on the market?

Minimum screen resolution for Android devices

I use log4j for logging and i want to print all logger.debug statements in a particular class / selected package.

i set the cfg as below&gt;

    log4j.category.my.pkg=info
    log4j.category.my.pkg.ab.class1=debug

but still only info messages are shown..

is this not the right way ?



log4j - set different loglevel for different packages/classes

I use log4j for logging and i want to print all logger.debug statements in a particular class / selected package.
i set the cfg as below>
<pre><code class="hljs language-ini">log4j.category.my.pkg=info
log4j.category.my.pkg.ab.class1=debug
</code></pre>
but still only info messages are shown..
is this not the right way ?

Anyone have an idea why this command works fine in Windows but in Linux I get a ClassNotFoundException game.ui.Main

    java -cp &quot;.;lib/*&quot; game.ui.Main -Xms64m -Xmx128m

my folder structure looks like this:
lib/ - Jars
game/ - Class files

This is the latest Java 6.

Classpath does not work under linux

Here&#39;s a nice pitfall  I just encountered.
Consider a list of integers:

    List&lt;Integer&gt; list = new ArrayList&lt;Integer&gt;();
    list.add(5);
    list.add(6);
    list.add(7);
    list.add(1);

Any educated guess on what happens when you execute `list.remove(1)`? What about `list.remove(new Integer(1))`? This can cause some nasty bugs.

What is the proper way to differentiate between [`remove(int index)`][1], which removes an element from given index and [`remove(Object o)`][2], which removes an element by reference, when dealing with lists of integers?

&lt;hr&gt;

The main point to consider here is the one [@Nikita mentioned][3] - exact parameter matching takes precedence over auto-boxing.


  [1]: http://download.oracle.com/javase/1.5.0/docs/api/java/util/List.html#remove(int)
  [2]: http://download.oracle.com/javase/1.5.0/docs/api/java/util/List.html#remove(java.lang.Object)
  [3]: https://stackoverflow.com/questions/4534146/properly-removing-an-integer-from-a-listinteger/4534152#4534152

Properly removing an Integer from a List&lt;Integer&gt;

In my script I need to perform a set of actions through range of dates, given a start and end date.  
Please provide me guidance to achieve this using Java.

    for ( currentDate = starDate; currentDate &lt; endDate; currentDate++) {
    
    }

I know the above code is simply impossible, but I do it in order to show you what I&#39;d like to achieve.

How to iterate through range of Dates in Java?

I am trying to add, remove and reference items from an array I create in my main java file, but I am having trouble figuring out the correct syntax.  In actionscript they have push() and pop() for adding and removing items in an array, is there an equivalent in android?

equivalent to push() or pop() for arrays?

What is the use of web.xml and why do we use?

    &lt;filter&gt;
    		&lt;filter-name&gt;wicket.mysticpaste&lt;/filter-name&gt;
     		&lt;filter-class&gt;org.apache.wicket.protocol.http.WicketFilter&lt;/filter-class&gt;
    		&lt;init-param&gt;
    			&lt;param-name&gt;applicationClassName&lt;/param-name&gt;
    			&lt;param-value&gt;com.mysticcoders.WicketApplication&lt;/param-value&gt;
     		&lt;/init-param&gt;
     	&lt;/filter&gt;
    
     &lt;filter-mapping&gt;
      &lt;filter-name&gt;wicket.mysticpaste&lt;/filter-name&gt;
    	&lt;url-pattern&gt;/*&lt;/url-pattern&gt;
     &lt;/filter-mapping&gt;

What does this filer and filermapping do? 

Why do we use web.xml?

Suddenly this keeps happening during a JUnit test. Everything was working, I wrote some new tests and this error occured. If I revert it, it won&#39;t go away. Why is that?

    log4j:WARN No appenders could be found for logger (org.springframework.test.context.junit4.SpringJUnit4ClassRunner).
    log4j:WARN Please initialize the log4j system properly.
    log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.


How to configure log4j.properties for SpringJUnit4ClassRunner?

What are the different approaches for changing the log4j log level dynamically, so that I will not have to redeploy the application. Will the changes be permanent in those cases? 

Dynamically Changing log4j log level

I&#39;ve been using log4j for quite a while now and I usually use this at the top of the log4j.xml (probably just like many others and according to Google this is *the* way to do it):

    &lt;!DOCTYPE log4j:configuration SYSTEM &quot;log4j.dtd&quot;&gt;

Obviously this is working, however Eclipse doesn&#39;t provide its context-sensitive help for writing the XML and all. Furthermore, it always shows a warning that it doesn&#39;t find the `log4j.dtd`. Now I&#39;m curious how to fix this.

I tried a few things and these work:

    &lt;!DOCTYPE log4j:configuration SYSTEM &quot;jar:file:/path/.m2/repository/log4j/log4j/1.2.14/log4j-1.2.14.jar!/org/apache/log4j/xml/log4j.dtd&quot;&gt;
    &lt;!DOCTYPE log4j:configuration SYSTEM &quot;http://logging.apache.org/log4j/1.2/apidocs/org/apache/log4j/xml/doc-files/log4j.dtd&quot;&gt;

As you can see from above we&#39;re using Maven. Therefore, I tried this, but it fails:

    &lt;!DOCTYPE log4j:configuration SYSTEM &quot;jar:file:${M2_REPO}/log4j/log4j/1.2.14/log4j-1.2.14.jar!/org/apache/log4j/xml/log4j.dtd&quot;&gt;

Eclipse usually knows how to deal with the classpath variables, but why doesn&#39;t this work? I know that the reference won&#39;t work during runtime, but neither does a simple `log4j.dtd` (if I&#39;m not wrong), so that shouldn&#39;t be a problem.

Can anyone please shed a light on this?

Eclipse: Referencing log4j.dtd in log4j.xml

Where in my Eclipse project should I add the `log4j.properties` file so that it will work as intended?

Where is the correct location to put Log4j.properties in an Eclipse project?

I have a `log4j` properties something like below. Everything that is logged in `TextProcessor.log` is something above WARN level. I don&#39;t understand the threshold that is set here to debug. Can someone explain what the threshold does?

    log4j.logger.TextProcessor=warn,TextProcessor 
    
    log4j.appender.TextProcessor=org.apache.log4j.RollingFileAppender
    log4j.appender.TextProcessor.File=C:/project/logs/TextProcessor.log
    log4j.appender.TextProcessor.MaxFileSize=10MB
    log4j.appender.TextProcessor.MaxBackupIndex=10
    log4j.appender.TextProcessor.Threshold=debug
    log4j.appender.TextProcessor.layout=org.apache.log4j.PatternLayout
    log4j.appender.TextProcessor.layout.ConversionPattern=[%d] [%5p] (%F:%L) - %m%n

Content Type	Original Author	Original Content on Stackoverflow
Question	jch	View Question on Stackoverflow
Solution 1 - Java	dogbane	View Answer on Stackoverflow
Solution 2 - Java	Bozho	View Answer on Stackoverflow

log4j - set different loglevel for different packages/classes

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Minimum screen resolution for Android devices

Android ListView Text Color

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