Here https://netbeans.org/bugzilla/show_bug.cgi?id=191297 appears a workaround:
run profiled application with -Xverify:none

According to this [GitHub issue][1], it&#39;s been fixed. Updating to [version 1.4][2] solved the problem for me.


  [1]: https://github.com/oracle/visualvm/issues/33
  [2]: https://visualvm.github.io/download.html

If you are using eclipse, then go to **Run/Debug** configuration.
Select your application from left side and click on **Arguments.**

Here you will see two text boxes.

    1. Program Arguments
    2. VM Arguments

In VM arguments, enter below commands.
**-Xverify:none**

Click on apply and then Run/Debug.

The workaround I found using IntelliJ is to compile to Java 1.6 byte code.
The menu option to do so is:  File - Project Structure, then set Project language level to 6.

This precludes you from using Java features only available with Java 7 or 8.


For **IntelliJ**, you can set `-Xverify:none` as follows:

**Run** &gt; **Edit Configurations...** &gt; **Modify options (Alt + M)** &gt; **Add VM options**.

This should reveal a new field **VM options**, to which you can write `-Xverify:none`.

I am having a little issue.

In my application, a Service is started after user is logged in successfully. Previously, the service needed to stop if application was killed. (say, removed from Recent application list by swiping.) So we had used `android:stopWithTask=&quot;true&quot;`. Now we need the Service to run as it is, even if the Task which started it, is removed from Recent app list. So I changed the Service to include `android:stopWithTask=&quot;false&quot;`. But that doesn&#39;t seem to work.

Related code:

Here is manifest part related to Service:

    &lt;service
        android:enabled=&quot;true&quot;
        android:name=&quot;.MyService&quot;
        android:exported=&quot;false&quot;
        android:stopWithTask=&quot;false&quot; /&gt;

In MyService.java:

    public class MyService extends AbstractService {
    
        @Override
        public void onStartService() {
            Intent intent = new Intent(this, MyActivity.class);
            intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP);
            PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent, 0);
            Notification notification = new Notification(R.drawable.ic_launcher, &quot;My network services&quot;, System.currentTimeMillis());
            notification.setLatestEventInfo(this, &quot;AppName&quot;, &quot;Message&quot;, pendingIntent);
            startForeground(MY_NOTIFICATION_ID, notification);	
        }

        @Override
    	public void onTaskRemoved(Intent rootIntent) {
    	    Toast.makeText(getApplicationContext(), &quot;onTaskRemoved called&quot;, Toast.LENGTH_LONG).show();
    	    System.out.println(&quot;onTaskRemoved called&quot;);
    	    super.onTaskRemoved(rootIntent);
    	}
    }

**AbstractService.java** is custom class that extends `Sevrice`:

    public abstract class AbstractService extends Service {

        protected final String TAG = this.getClass().getName();
    
        @Override
        public void onCreate() {
            super.onCreate();
            onStartService();
            Log.i(TAG, &quot;onCreate(): Service Started.&quot;);
        }
    
        @Override
        public final int onStartCommand(Intent intent, int flags, int startId) {
            Log.i(TAG, &quot;onStarCommand(): Received id &quot; + startId + &quot;: &quot; + intent);
            return START_STICKY; // run until explicitly stopped.
        }
    
        @Override
        public final IBinder onBind(Intent intent) {
            return m_messenger.getBinder();
        }
    
        @Override
        public void onDestroy() {
            super.onDestroy();
            onStopService();
            Log.i(TAG, &quot;Service Stopped.&quot;);
        }    
    
        public abstract void onStartService();
        public abstract void onStopService();
        public abstract void onReceiveMessage(Message msg);
      
        @Override
    	public void onTaskRemoved(Intent rootIntent) {
    	    Toast.makeText(getApplicationContext(), &quot;AS onTaskRemoved called&quot;, Toast.LENGTH_LONG).show();
    	    super.onTaskRemoved(rootIntent);
    	}
    }

Now if I login in the application, MyService is started. After that I press Home button, so application is moved to background. Now I remove the application from Recent Application&#39;s list. At that time, I *should* see the Toast and console message, as per this method&#39;s description:

&gt; public void onTaskRemoved (Intent rootIntent)  
&gt; 
&gt; Added in API level 14
&gt; 
&gt; This is called if the service is currently running and the user has
&gt; removed a task that comes from the service&#39;s application. If you have
&gt; set ServiceInfo.FLAG_STOP_WITH_TASK then you will not receive this
&gt; callback; instead, the service will simply be stopped.
&gt; 
&gt; Parameters rootIntent  The original root Intent that was used to
&gt; launch the task that is being removed.

But I am not seeing any of that. Service is returning START_STICKY in `onStartCommand`, So I think `onTaskRemoved` should be fired along with flag `android:stopWithTask=&quot;false&quot;`.

Am I missing anything?

Let me know in case I need to add some code which might be important to figure out what&#39;s wrong.

**P.S.:** I tested this on 4.2.2 till now.

**P.S.:** I just tested the same code in 4.1.2, on which Service keeps running, and I get the message &quot;onTaskRemoved called&quot; in log, too.

What should I do to make this work in all versions?

Continue Service even if application is cleared from Recent app

I am new to `Python` and I have a String, I want to extract the numbers from the string.  For example:

    str1 = &quot;3158 reviews&quot;
    print (re.findall(&#39;\d+&#39;, str1 ))
    
Output is `[&#39;4&#39;, &#39;3&#39;]`

I want to get `3158` only, as an Integer preferably, not as List. 

Extract Number from String in Python

If I try to profile application, (which is prepared under Eclipse, but running from command line) with the help of VisualVM, I get the following error message

![enter image description here][1]

Simultaneously, the project folder is fouled with newly created class files. Although they are already existing in `target/classes`.

The project structure is Maven&#39;s, i.e. there is a foder `target/classes` in current directory and I us the following command to run the application

    java -Xmx16g -cp target/classes tests.Runner01

How to fix?

**UPDATE** 

The same occurs with conventional java project too.

Below it the picture of populated class files, which located where they should not 

![enter image description here][2]




  [1]: http://i.stack.imgur.com/GPhyQ.png
  [2]: http://i.stack.imgur.com/zuetp.png

Redefinition failed with error 62 while trying to profile an application

If I try to profile application, (which is prepared under Eclipse, but running from command line) with the help of VisualVM, I get the following error message
<img src="http://i.stack.imgur.com/GPhyQ.png" alt="enter image description here">
Simultaneously, the project folder is fouled with newly created class files. Although they are already existing in <code>target/classes</code>.
The project structure is Maven's, i.e. there is a foder <code>target/classes</code> in current directory and I us the following command to run the application
<pre><code class="hljs language-bash">java -Xmx16g -cp target/classes tests.Runner01
</code></pre>
How to fix?
UPDATE
The same occurs with conventional java project too.
Below it the picture of populated class files, which located where they should not
<img src="http://i.stack.imgur.com/zuetp.png" alt="enter image description here">

I have implemented a RecyclerView that contains mainly images which is loading in through Picasso. My problem is that as soon as I scroll down or up the view, the placeholder image appears for approx. a second before it is replaced by the actual image. It scrolls very smoothly, but is practically unusable. This happens every time something scrolls off the screen. 

Picasso is clearly caching the images to the disk, as they load faster than the initial load time, but they are definitely instantly reloading from the cache. What did i implement incorrectly?

My adapter code:

    public class ExploreAdapter extends RecyclerView.Adapter&lt;ExploreAdapter.ExploreViewHolder&gt; {
    
        private List&lt;ExploreItem&gt; exploreItemList;
        private Context mContext;
        private int deviceWidth = PrefUtils.getDeviceWidth();
    
        public ExploreAdapter(Context context, List&lt;ExploreItem&gt; exploreItemList){
            this.mContext = context;
            this.exploreItemList = exploreItemList;
        }
    
        @Override
        public int getItemCount(){
            return exploreItemList.size();
        }
    
        @Override
        public void onBindViewHolder(ExploreViewHolder exploreViewHolder, int i){
            ExploreItem item = exploreItemList.get(i);
            exploreViewHolder.getvTitle().setText(item.getTitle());
            exploreViewHolder.getvUsername().setText(item.getUsername());
            exploreViewHolder.getvNumLikes().setText(item.getNbOfLikes());
    
            Picasso.with(mContext).load(item.getMediaLocation().trim())
                    .resize(deviceWidth, deviceWidth)
                    .centerCrop()
                    .placeholder(R.drawable.profile_background)
                    .into(exploreViewHolder.getvImage());
    
            Picasso.with(mContext).load(item.getUserProfilePicUrl().trim())
                    .placeholder(R.drawable.profile_picture)
                    .into(exploreViewHolder.getvProfilePic());
        }
    
        @Override
        public ExploreViewHolder onCreateViewHolder(ViewGroup viewGroup, int i){
            View itemView = LayoutInflater.
                    from(viewGroup.getContext()).
                    inflate(R.layout.explore_item, viewGroup, false);
    
            return new ExploreViewHolder(itemView);
        }
    
        public static class ExploreViewHolder extends RecyclerView.ViewHolder{
            private TextView  vTitle,
                              vUsername,
                              vNumLikes;
    
            private SquareImage vImage;
            private ImageView vProfilePic;
    
            public ExploreViewHolder(View v){
                super(v);
                this.vTitle = (TextView) v.findViewById(R.id.explore_item_title);
                this.vUsername = (TextView) v.findViewById(R.id.explore_item_username);
                this.vNumLikes = (TextView) v.findViewById(R.id.explore_item_number_likes);
                this.vImage = (SquareImage) v.findViewById(R.id.explore_item_image);
                this.vProfilePic = (ImageView) v.findViewById(R.id.explore_item_profile_picture);
            }
    
            public TextView getvTitle() {
                return vTitle;
            }
    
            public TextView getvUsername() {
                return vUsername;
            }
    
            public ImageView getvProfilePic() {
                return vProfilePic;
            }
    
            public SquareImage getvImage() {
                return vImage;
            }
    
            public TextView getvNumLikes() {
                return vNumLikes;
            }
    
            public void setvImage(SquareImage vImage) {
                this.vImage = vImage;
            }
    
            public void setvNumLikes(TextView vNumLikes) {
                this.vNumLikes = vNumLikes;
            }
    
            public void setvProfilePic(ImageView vProfilePic) {
                this.vProfilePic = vProfilePic;
            }
    
            public void setvTitle(TextView vTitle) {
                this.vTitle = vTitle;
            }
    
            public void setvUsername(TextView vUsername) {
                this.vUsername = vUsername;
            }
        }
    }

Any help is appreciated.

Recyclerview painfully slow to load cached images form Picasso

I&#39;m looking for a **safe** way to create a temp file in Java.  By safe, I mean the following:

* Name should be unique, even under potential race conditions (e.g. another Thread calls the same func at the same time, or another process runs this code simultaneously)
* File should be private, even under potential race conditions (e.g. another user tries to chmod file at high rate)
* I can tell it to delete the file, without me having to do a generic delete, and risk deleting the wrong file
* Ideally, should ensure file is deleted, even if exception is thrown before I get the chance to
* File should default to a sane location (e.g. the JVM specified tmp dir, defaulting to the system temp dir)


What is a safe way to create a Temp file in Java?

I want to get `Bitmap` from `ImageView`. I have used following code, but `getDrawable()` returns null. How to get whole `Bitmap` from `ImageView`.

    Bitmap bitmap;
    if (mImageViewer.getDrawable() instanceof BitmapDrawable) {
        bitmap = ((BitmapDrawable) mImageViewer.getDrawable()).getBitmap();
    } else {
        Drawable d = mImageViewer.getDrawable();
        bitmap = Bitmap.createBitmap(d.getIntrinsicWidth(), d.getIntrinsicHeight(), Bitmap.Config.ARGB_8888);
        Canvas canvas = new Canvas(bitmap);
        d.draw(canvas);
    }
    storeImage(bitmap,&quot;final.jpeg&quot;);

Get Bitmap from ImageView in Android L

I&#39;m unable to get spring boot to automatically load my database schema when I start it up.

Here is my application.properties:

    spring.datasource.url=jdbc:mysql://localhost:3306/test
    spring.datasource.username=test
    spring.datasource.password=
    spring.datasource.driverClassName = com.mysql.jdbc.Driver
    
    spring.jpa.database = MYSQL
    
    spring.jpa.show-sql = true
    
    spring.jpa.hibernate.ddl-auto = create
    spring.jpa.hibernate.dialect = org.hibernate.dialect.MySQL5Dialect
    spring.jpa.hibernate.naming_strategy = org.hibernate.cfg.ImprovedNamingStrategy

Here is my Application.java:

    @EnableAutoConfiguration
    @ComponentScan
    public class Application {
        public static void main(final String[] args){
            SpringApplication.run(Application.class, args);
        }
    }

Here is a sample entity:

    @Entity
    @Table(name = &quot;survey&quot;)
    public class Survey implements Serializable {
    
        private Long _id;
    
        private String _name;
    
        private List&lt;Question&gt; _questions;
    
        /**
         * @return survey&#39;s id.
         */
        @Id
        @GeneratedValue(strategy = IDENTITY)
        @Column(name = &quot;survey_id&quot;, unique = true, nullable = false)
        public Long getId() {
            return _id;
        }
    
        /**
         * @return the survey name.
         */
        @Column(name = &quot;name&quot;)
        public String getName() {
            return _name;
        }
    
    
        /**
         * @return a list of survey questions.
         */
        @OneToMany(mappedBy = &quot;survey&quot;)
        @OrderBy(&quot;id&quot;)
        public List&lt;Question&gt; getQuestions() {
            return _questions;
        }
    
        /**
         * @param id the id to set to.
         */
        public void setId(Long id) {
            _id = id;
        }
    
        /**
         * @param name the name for the question.
         */
        public void setName(final String name) {
            _name = name;
        }
    
        /**
         * @param questions list of questions to set.
         */
        public void setQuestions(List&lt;Question&gt; questions) {
            _questions = questions;
        }
    }

Any ideas what I&#39;m doing wrong?

Unable to get spring boot to automatically create database schema

I have created a simple unit test but IntelliJ is incorrectly highlighting it red. marking it as an error


No beans?

![enter image description here][1]


As you can see below it passes the test? So it must be Autowired?

![enter image description here][2]


  [1]: http://i.stack.imgur.com/4cCFH.png
  [2]: http://i.stack.imgur.com/YFGln.png

intellij incorrectly saying no beans of type found for autowired repository

Can someone please explain me the difference between `Sleeping`, `Wait`, `Park`, and `Monitor` thread states in VisualVM.

![enter image description here][1]

This is what I have found:

`Running`: thread is still running. &lt;br /&gt;
`Sleeping`: thread is sleeping (method yield() was called on the thread object)&lt;br /&gt;
`Wait`: thread was blocked by a mutex or a barrier, and is waiting for another thread to release the lock&lt;br /&gt;
`Park`: parked threads are suspended until they are given a permit. Unparking a thread is usually done by calling method unpark() on the thread object&lt;br /&gt;
`Monitor`: threads are waiting on a condition to become true to resume execution

What I am unable to understand is the state Park, what actually suspends the thread? How do I detect in the code what has made the thread suspend its execution?

Can someone please guide me in this regard.

Thanks.


  [1]: http://i.stack.imgur.com/4WYvV.png

Content Type	Original Author	Original Content on Stackoverflow
Question	Suzan Cioc	View Question on Stackoverflow
Solution 1 - Java	rafalopez79	View Answer on Stackoverflow
Solution 2 - Java	shmosel	View Answer on Stackoverflow
Solution 3 - Java	Pirate	View Answer on Stackoverflow
Solution 4 - Java	Stuart Hansen	View Answer on Stackoverflow
Solution 5 - Java	Spacha	View Answer on Stackoverflow

Redefinition failed with error 62 while trying to profile an application

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Extract Number from String in Python

Continue Service even if application is cleared from Recent app

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