Try running with the following JVM property:

    -XX:-OmitStackTraceInFastThrow

From the [Release Notes][1]:

&gt; The compiler in the server VM now
&gt; provides correct stack backtraces for
&gt; all &quot;cold&quot; built-in exceptions. For
&gt; performance purposes, when such an
&gt; exception is thrown a few times, the
&gt; method may be recompiled. After
&gt; recompilation, the compiler may choose
&gt; a faster tactic using preallocated
&gt; exceptions that do not provide a stack
&gt; trace. To disable completely the use
&gt; of preallocated exceptions, use this
&gt; new flag:
&gt; `-XX:-OmitStackTraceInFastThrow`.

[1]: http://www.oracle.com/technetwork/java/javase/relnotes-139183.html#vm

I tried to use `input` (Py3) /`raw_input()` (Py2) to get a list of numbers, however with the code

    numbers = input()
    print(len(numbers))

the input `[1,2,3]` and ``1 2 3`` gives a result of `7` and ``5`` respectively – it seems to interpret the input as if it were a string. Is there any direct way to make a list out of it? Maybe I could use `re.findall` to extract the integers, but if possible, I would prefer to use a more Pythonic solution.

Get a list of numbers as input from the user

I recently reinstalled OSX. It has been a pain rounding up all of my certificates, etc, but I finally am back. However, when trying to install an app on either of two iPhones 3G&#39;s I have, they both say:

Software version: 4.2.1 (8C148) | XCode cannot find the software image to install this version. | Could not support development.

What is going on? Both iPhones list themselves as up to date in iTunes, and iOS developer&#39;s center only lists 4.2 as the available SDK.

EDIT: I do have a paid membership, and I have recently had test apps installed on both of these devices.

UPDATE: I removed all 3 ( the 2 included ) of my devices from the provisioning portal, and deleted them from the organizer, closed XCode, detached device, restarted, plugged in device, no luck.

iPhone Could Not Support Development

In my application log (using log4j), I see a NullPointerException, but without the stack trace. I know that as an optimization, when an exception occurs many times - the jvm stops producing the stack trace. The problem is the exception occurred some time ago, and all my logs are filled with the exception without the stack trace. Is there a way to &quot;reset&quot; this mechanism, so the next thrown exception will be printed with the full stack trace? I don&#39;t want to restart the application, as it is hard to reproduce this bug, and restarting may cause to &quot;go away&quot;...

Thanks!

Recurring Exception without a stack trace - how to reset?

<p>In my application log (using log4j), I see a NullPointerException, but without the stack trace. I know that as an optimization, when an exception occurs many times - the jvm stops producing the stack trace. The problem is the exception occurred some time ago, and all my logs are filled with the exception without the stack trace. Is there a way to "reset" this mechanism, so the next thrown exception will be printed with the full stack trace? I don't want to restart the application, as it is hard to reproduce this bug, and restarting may cause to "go away"...</p>
<p>Thanks!</p>


Why does [`InputStream#read()`][1] return an `int` and not a `byte`?


  [1]: http://docs.oracle.com/javase/6/docs/api/java/io/InputStream.html#read%28%29

Why does InputStream#read() return an int and not a byte?

I need to use UTF-8 in my resource properties using Java&#39;s `ResourceBundle`. When I enter the text directly into the properties file, it displays as mojibake.

My app runs on Google App Engine.

Can anyone give me an example? I can&#39;t get this work.

How to use UTF-8 in resource properties with ResourceBundle

I have a string that has two single quotes in it, the `&#39;` character. In between the single quotes is the data I want.

How can I write a regex to extract &quot;the data i want&quot; from the following text?

    mydata = &quot;some string with &#39;the data i want&#39; inside&quot;;
   


How to extract a substring using regex

I am wondering what the major difference between running `mvn compile` and `mvn clean compile` are, in practicality.

I understand what the actual difference is, that `mvn clean compile` deletes all the generated files and starts again from scratch, but why would we want to do this? I can assume `mvn compile` will regenerate files if it&#39;s necessary, right?

One thing I noticed in my project was that if you had deleted a source file, without running `clean`, the compiled file remains, which usually wouldn&#39;t be a problem, but could be I suppose.

In Maven, Why Run &#39;mvn clean&#39;?

I thought hibernate takes into consideration only class variables that are annotated with `@Column`.  But strangely today when I added a variable (that is not mapped to any column, just a variable i need in the class), it is trying to include that variable in the select statement as a column name and throws the error - 

&gt;Unknown column &#39;team1_.agencyName&#39; in &#39;field list&#39;

My class - 

    @Entity
    @Table(name=&quot;team&quot;)
    public class Team extends BaseObject implements Serializable {

    @Id  @GeneratedValue(strategy=GenerationType.AUTO)
    private Long id;
    
    @Column(length=50)
    private String name;
    
    @Column(length=10)
    private String code;
    
    @Column(name = &quot;agency_id&quot;)
    private Long agencyId;
    
    private String agencyName; //note: not annotated.

    }

FYI...I use the above class in another class with many to many mapping

    @ManyToMany(fetch = FetchType.EAGER) 
    @JoinTable(
            name=&quot;user_team&quot;,
            joinColumns = { @JoinColumn( name=&quot;user_id&quot;) },
            inverseJoinColumns = @JoinColumn( name=&quot;team_id&quot;)
    )    
    public Set&lt;Team&gt; getTeams() {
        return teams;
    }

Why is this happening?!


Make hibernate ignore class variables that are not mapped

When I use the default layout with NLog it only prints the name of the exception.
I&#39;ve been told that the log4jxmlevent layout doesn&#39;t prints nothing about the exception.
What layout will help me?

Example code:

    try
    {
        throw new SystemException();
    }
    catch (Exception ex)
    {
        logger.Error(&quot;oi&quot;, ex);
    }

Default layout output:

    2011-01-14 09:14:48.0343|ERROR|ConsoleApplication.Program|oi

log4jxmlevent output:

    &lt;log4j:event logger=&quot;ConsoleApplication.Program&quot;
               level=&quot;ERROR&quot;
               timestamp=&quot;1295003776872&quot;
               thread=&quot;9&quot;&gt;
    &lt;log4j:message&gt;oi&lt;/log4j:message&gt;
    &lt;log4j:NDC /&gt;
    &lt;log4j:locationInfo class=&quot;ConsoleApplication.Program&quot;
                        method=&quot;Void Main(System.String[])&quot;
                        file=&quot;C:\Users\User\Documents\Visual Studio 2010\Projects\ConsoleApplication\ConsoleApplication\Program.cs&quot;
                        line=&quot;21&quot; /&gt;
    &lt;nlog:eventSequenceNumber&gt;3&lt;/nlog:eventSequenceNumber&gt;
    &lt;nlog:locationInfo assembly=&quot;ConsoleApplication, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null&quot; /&gt;
    &lt;log4j:properties&gt;
      &lt;log4j:data name=&quot;log4japp&quot;
                  value=&quot;true&quot; /&gt;
      &lt;log4j:data name=&quot;log4jmachinename&quot;
                  value=&quot;MACHINE&quot; /&gt;
    &lt;/log4j:properties&gt;
  &lt;/log4j:event&gt;

How to get the Stack trace when logging exceptions with NLog?

    import ftplib
    import urllib2
    import os
    import logging
    logger = logging.getLogger(&#39;ftpuploader&#39;)
    hdlr = logging.FileHandler(&#39;ftplog.log&#39;)
    formatter = logging.Formatter(&#39;%(asctime)s %(levelname)s %(message)s&#39;)
    hdlr.setFormatter(formatter)
    logger.addHandler(hdlr)
    logger.setLevel(logging.INFO)
    FTPADDR = &quot;some ftp address&quot;

    def upload_to_ftp(con, filepath):
        try:
            f = open(filepath,&#39;rb&#39;)                # file to send
            con.storbinary(&#39;STOR &#39;+ filepath, f)         # Send the file
            f.close()                                # Close file and FTP
            logger.info(&#39;File successfully uploaded to &#39;+ FTPADDR)
        except, e:
            logger.error(&#39;Failed to upload to ftp: &#39;+ str(e))

This doesn&#39;t seem to work, I get syntax error, what is the proper way of doing this for logging all kind of exceptions to a file


python exception message capturing

What is the difference - technical, philosophical, conceptual, or otherwise - between

    raise &quot;foo&quot;

and

    raise Exception.new(&quot;foo&quot;)

?

What is the difference between `raise &quot;foo&quot;` and `raise Exception.new(&quot;foo&quot;)`?

I recently published an app to the market and I&#39;m now getting an error by some user, the app presumably crashes right when it starts. Unfortunately I can&#39;t contact him directly and the app works fine in the emulator as well as on my phone (and some friends&#39; phones).&lt;br /&gt;EDIT: I guess that this happens to more than one user as I received comments in the market like &quot;crashes on start&quot; or &quot;doesn&#39;t work&quot;. I only received this one stacktrace but there&#39;s no info about the configuration, device, Android version, etc.

The app is a simple soundboard, so there&#39;s really no magic involved, but I can&#39;t get why it fails on some phones. Here&#39;s the stack trace I&#39;m getting, I hope anybody can help me out:

    java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.my.app/com.my.app.SoundMachine}: java.lang.ClassNotFoundException: com.my.app.SoundMachine in loader dalvik.system.PathClassLoader[/mnt/asec/com.my.app-1/pkg.apk]
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2585)
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
    at android.app.ActivityThread.access$2300(ActivityThread.java:125)
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
    at android.os.Handler.dispatchMessage(Handler.java:99)
    at android.os.Looper.loop(Looper.java:123)
    at android.app.ActivityThread.main(ActivityThread.java:4627)
    at java.lang.reflect.Method.invokeNative(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:521)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:876)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:634)
    at dalvik.system.NativeStart.main(Native Method)
    Caused by: java.lang.ClassNotFoundException: com.my.app.SoundMachine in loader dalvik.system.PathClassLoader[/mnt/asec/com.my.app-1/pkg.apk]
    at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:243)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:573)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:532)
    at android.app.Instrumentation.newActivity(Instrumentation.java:1021)
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2577)
    ... 11 more

These are the first couple of lines from my activity:

    public class SoundMachine extends Activity {
      private SoundManager mSoundManager;
    
      @Override
      public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

EDIT: This is the (almost) complete onCreate:

      @Override
      public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
    
        mSoundManager = new SoundManager();
        mSoundManager.initSounds(getBaseContext());
    
        int counter = 0;
        for (Integer soundFile : soundFiles) {
          counter++;
          mSoundManager.addSound(counter, soundFile);
        }
    
        ImageButton SoundButton1 = (ImageButton) findViewById(R.id.sound1);
        SoundButton1.setOnClickListener(new OnClickListener() {
          public void onClick(View v) {
            mSoundManager.playSound(1);
          }
        });
        SoundButton1.setOnLongClickListener(new OnLongClickListener() {
          public boolean onLongClick(View v) {
            saveSoundChoice(soundFiles[0], soundNames[0]);
            return true;
          }
        });
    
    (...more of this...)
    
        Button StopButton = (Button) findViewById(R.id.stopbutton);
        StopButton.setOnClickListener(new OnClickListener() {
          public void onClick(View v) {
            mSoundManager.stopAll();
          }
        });
      }

And here&#39;s my manifest:

    &lt;?xml version=&quot;1.0&quot; encoding=&quot;utf-8&quot;?&gt;
    &lt;manifest xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot;
    	package=&quot;com.my.app&quot; android:installLocation=&quot;preferExternal&quot;
    	android:versionCode=&quot;9&quot; android:versionName=&quot;1.2&quot;&gt;
    	&lt;application android:icon=&quot;@drawable/icon&quot; android:label=&quot;@string/app_name&quot;&gt;
    		&lt;activity android:name=&quot;.SoundMachine&quot; android:label=&quot;@string/app_name&quot;
    			android:screenOrientation=&quot;portrait&quot;&gt;
    			&lt;intent-filter&gt;
    				&lt;action android:name=&quot;android.intent.action.MAIN&quot; /&gt;
    				&lt;category android:name=&quot;android.intent.category.LAUNCHER&quot; /&gt;
    			&lt;/intent-filter&gt;
    		&lt;/activity&gt;
    	&lt;/application&gt;
    	&lt;uses-permission android:name=&quot;android.permission.WRITE_EXTERNAL_STORAGE&quot; /&gt;
    	&lt;uses-sdk android:minSdkVersion=&quot;3&quot; android:targetSdkVersion=&quot;8&quot; /&gt;
    &lt;/manifest&gt;

So all possible errors I already read about here and in some forums don&#39;t apply to my app.

- The activity is present in the manifest.
- The super-method is called in the overriden method.
- The ContentView is set before accessing elements in the view.

I know it&#39;s hard to pinpoint the source of an error without being able to reproduce it, but maybe somebody has a bright idea and can help me out.

Some questions:

- &lt;strike&gt;Do I need the &quot;intent&quot;-part in the manifest? Eclipse created it when I created the project.&lt;/strike&gt; (Yes, according to Mayra)
- &lt;strike&gt;Should the super-method be called where it is?&lt;/strike&gt; (Yes, according to Mayra)

EDIT: The main question that remains now is: How come the path in PathClassLoader is different from my package-name? The page John J Smith posted seems to deal with the same problem, but I don&#39;t understand the fix that was applied there.

Thanks, Select0r


Android: Unable to instantiate activity / ClassNotFoundException

I&#39;ve got a piece of code similar to this:

    import sys
    
    def func1():
    	func2()
    
    def func2():
    	raise Exception(&#39;test error&#39;)
    
    def main():
    	err = None
    
    	try:
    		func1()
    	except:
    		err = sys.exc_info()[1]
    		pass
    	
    	# some extra processing, involving checking err details (if err is not None)
    	
    	# need to re-raise err so caller can do its own handling
    	if err:
    		raise err
    
    if __name__ == &#39;__main__&#39;:
    	main()

When `func2` raises an exception I receive the following traceback:

    Traceback (most recent call last):
      File &quot;err_test.py&quot;, line 25, in &lt;module&gt;
        main()
      File &quot;err_test.py&quot;, line 22, in main
        raise err
    Exception: test error

From here I don&#39;t see where the exception is coming from. The original traceback is lost.

How can I preserve original traceback and re-raise it? I want to see something similar to this:

    Traceback (most recent call last):
      File &quot;err_test.py&quot;, line 26, in &lt;module&gt;
        main()
      File &quot;err_test.py&quot;, line 13, in main
        func1()
      File &quot;err_test.py&quot;, line 4, in func1
        func2()
      File &quot;err_test.py&quot;, line 7, in func2
        raise Exception(&#39;test error&#39;)
    Exception: test error

Content Type	Original Author	Original Content on Stackoverflow
Question	duduamar	View Question on Stackoverflow
Solution 1 - Java	dogbane	View Answer on Stackoverflow

Recurring Exception without a stack trace - how to reset?

Java Problem Overview

Java Solutions

Solution 1 - Java

iPhone Could Not Support Development

Get a list of numbers as input from the user

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