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JAVA QUESTIONS

java.lang.InternalError: CallerSensitive annotation expected at frame 1
java.lang.InternalError: CallerSensitive annotation expected at frame 1
fixed the issue. Will look into that further Only privileged code can use this annotation. the code is privileged if it is loaded via bootstrap class loader or extension class loader.excerpt from Open JDK source file classFileParser.cpp
TAG : java
Date : November 22 2020, 03:03 PM , By : ainur.asadov
How to write a method to read JSON files of different structures and return different POJO objects in Java?
How to write a method to read JSON files of different structures and return different POJO objects in Java?
hope this fix your issue I have multiple JSON files of different structures, to read through my program. For example, , use interfaces
TAG : java
Date : November 22 2020, 03:03 PM , By : user2956898
Reference to Classes in Java
Reference to Classes in Java
To fix the issue you can do The closest you could come would be to pass ClassA.class or ClassB.class as a Class and then use reflection to get the field for that class, and its value.
TAG : java
Date : November 22 2020, 03:03 PM , By : user2956876
Unable to call function via companion object
Unable to call function via companion object
I hope this helps you . Because the method you are trying to call is not a member of the companion, use:
TAG : java
Date : November 22 2020, 03:03 PM , By : user2956849
REST: convert XML content passed with POST to a java object, attribute inside the element
REST: convert XML content passed with POST to a java object, attribute inside the element
hope this fix your issue First and the easiest way is to create a Java mapping per each XML tag:
TAG : java
Date : November 22 2020, 03:03 PM , By : Koen Muurling
Device not receive message from GCM
Device not receive message from GCM
I hope this helps you . As you mentioned in your question that your notification has been sent, so then the issue is on android code, you have to cross check your android code. Look at this tutorial...http://www.programming-techniques.com/2014/01/goo
TAG : java
Date : November 22 2020, 03:03 PM , By : Alexandr Dascal
How to increase Openfire concurrent connection limit?
How to increase Openfire concurrent connection limit?
To fix the issue you can do Adding to @Flow's answer...If you are trying to connect from another computer, then you would have to increase the ulimit of that computer too.
TAG : java
Date : November 22 2020, 03:03 PM , By : eMizZ
Android send custom parameter on AsyncTask
Android send custom parameter on AsyncTask
I wish did fix the issue. Hi all by this below method i can send any custom parameters on that without problem. now i want to change this method to AsyncTask class as name LongOperationbut i can dont know how to send getRequestFromServer method param
TAG : java
Date : November 22 2020, 03:03 PM , By : user2956767
GWT - Get dom element's value from another page
GWT - Get dom element's value from another page
seems to work fine If this was possible, than theoretically any website would be able to get any data from any other page open in a browser, including credit card numbers, passwords, etc. Fortunately, it's not possible.If you need to share data betwe
TAG : java
Date : November 22 2020, 03:03 PM , By : user2956761
How can i initialize an array in Java?
How can i initialize an array in Java?
I wish this help you Look at your code and consider what happens if x is not '2', '3', or '4'. What is A as of the
TAG : java
Date : November 22 2020, 03:03 PM , By : user2956745
Is it possible to increase a java process's(when is running) size?
Is it possible to increase a java process's(when is running) size?
I hope this helps you . You can increase the following during a running process. number of threads amount of memory used by the stack (but the maximum size of an individual stack) amount of native memory used amount of memory mapped files mapped into
TAG : java
Date : November 22 2020, 10:56 AM , By : user2956715
Getting Node Address instead of Value in Binary Search Tree
Getting Node Address instead of Value in Binary Search Tree
Hope this helps You're printing an object, not its inner value (in other words, you're calling toString() implicitly).In order to print the value, you should get the value from Node object:
TAG : java
Date : November 22 2020, 10:56 AM , By : Mathfrick
PdfByteContent not adding in iText pdf
PdfByteContent not adding in iText pdf
will be helpful for those in need Please read the documentation before writing code. You will benefit from reading the section "Absolute position of text" in the free ebook "The Best iText Questions on StackOverflow".As for your code:
TAG : java
Date : November 22 2020, 10:56 AM , By : user2956691
Spring JpaRepository: delete() with subsequent save() in the same transaction
Spring JpaRepository: delete() with subsequent save() in the same transaction
Hope that helps Because repository.flush() flushes the changes to the database by calling EntityManager.flush(). So when you flush the changes after delete(), sql gets executed and the following save will have no problems.If you don't call flush it i
TAG : java
Date : November 22 2020, 10:56 AM , By : Funnyboyz Cfc
producer-consumer using arraydeque working only in breakpoint
producer-consumer using arraydeque working only in breakpoint
To fix this issue ArrayDeque is not thread safe. You'll have to guard it with a lock (synchronized keyword or read/write lock) in order to access it safely from different threads.Another option is to use a thread safe deque implementation, preferably
TAG : java
Date : November 22 2020, 10:56 AM , By : user2956662
Adding a JPanel to another JPanel
Adding a JPanel to another JPanel
I think the issue was by ths following , here is the problem you are adding panel to itself .adding container's parent to itself
TAG : java
Date : November 22 2020, 10:56 AM , By : user2956660
Comparison with operator ==, how does it work?
Comparison with operator ==, how does it work?
wish helps you Comparison 3 will not compile: it tries to compare an array to a scalar.Comparisons 4 and 5 involve primitives and are done by value. There are no references or autoboxing involved. Therefore the following is not relevant here:
TAG : java
Date : November 22 2020, 10:56 AM , By : user2956633
Error buildling with maven for openshift
Error buildling with maven for openshift
Any of those help I encountered the same problem with our group project. Particularly this line is breaking your build:
TAG : java
Date : November 22 2020, 10:56 AM , By : user2956595
What is the java equivilant to MySQL's smallint
What is the java equivilant to MySQL's smallint
I wish did fix the issue. As per the comment below, for MySQL's smallint, java's short should cover that value range. Of course, you could also use an int, but keep in mind that it allows many values that the database column does not.
TAG : java
Date : November 22 2020, 10:56 AM , By : user2956594
proxy trouble on eclipse with https
proxy trouble on eclipse with https
wish helps you I believe that the proxy you configure in the eclipse settings are for plugins and IDE related stuff.. You will have to setup the proxy in your code at runtime like so :
TAG : java
Date : November 22 2020, 10:56 AM , By : user2956586
Spring-Jdbc Template and Prepared statement
Spring-Jdbc Template and Prepared statement
it fixes the issue By default, the JDBCTemplate does its own PreparedStatement internally, if you just use the .update(String sql, Object ... args) form. Spring, and your database, will manage the compiled query for you, so you don't have to worry ab
TAG : java
Date : November 22 2020, 10:56 AM , By : Meeb05
Mule - exception in Outbound endpoint Message payload is of type: byte[]
Mule - exception in Outbound endpoint Message payload is of type: byte[]
wish helps you The problem is the aggregation strategy. Since you did not define any custom strategy, Mule uses the default one (and the default aggregator CollectAllAggregationStrategy does not handle byte[] payloads)If you do not need any informati
TAG : java
Date : November 22 2020, 10:56 AM , By : vcsabbi
Modify package names for java classes generated from wsdl
Modify package names for java classes generated from wsdl
I wish this helpful for you In cxf-codgen-plugin you can specify package mapping in the wsdlOptions section:
TAG : java
Date : November 22 2020, 10:56 AM , By : Vidmantas Norkus
How to download multiple images and have one progressBar using AsynTask (Android)
How to download multiple images and have one progressBar using AsynTask (Android)
it fixes the issue Thank you so much! figured out that my loops were suppose to go inside doInBackground. Also to anyone else having a similar issue. To download multiple files and display a decent progressBar, here is a very great tutorial: http://t
TAG : java
Date : November 22 2020, 10:56 AM , By : user2956504
Implementing Service Provider, IdP and user in java with SAML (POC)
Implementing Service Provider, IdP and user in java with SAML (POC)
should help you out After a lot of gooogle finally I found this website which will help step by step that how to setup SAML.
TAG : java
Date : November 22 2020, 10:56 AM , By : user2956502
Why does my scanner repeat?
Why does my scanner repeat?
To fix the issue you can do I'm trying to make a GPA calculator but early on in the code I started having issues; here's the code segment: , You can fix this by adding
TAG : java
Date : November 22 2020, 10:56 AM , By : user2956479
Can I forget ResultSetFuture in Cassandra java driver without facing memory leak?
Can I forget ResultSetFuture in Cassandra java driver without facing memory leak?
I hope this helps you . You will not hit any memory leaks doing that. That said, since your calling something asynchronously if you call it a lot (lot) with no throttling you could very well run out of memory by producing things faster then they can
TAG : java
Date : November 22 2020, 10:56 AM , By : user2956474
XML to JAXB binding having nested elements?
XML to JAXB binding having nested elements?
it helps some times I have below XML. , try this
TAG : java
Date : November 22 2020, 10:56 AM , By : user2956457
Java: ToString() prints the same hashcode each time
Java: ToString() prints the same hashcode each time
this one helps. , Try making two instances,
TAG : java
Date : November 22 2020, 10:56 AM , By : user2956435
Why am I getting a thread exception in my graphics program?
Why am I getting a thread exception in my graphics program?
like below fixes the issue Before you "start" the game, make sure that the window has been properly realised (attached to a native peer) and sized.You should also make sure that the UI is created within the context of the Event Dispatching Thread
TAG : java
Date : November 22 2020, 10:56 AM , By : user2956428
Can we read 4th byte from hexadecimal value?
Can we read 4th byte from hexadecimal value?
Hope this helps Actually I am not so clear about it so I put a question here, and I am also new to bit calculation. My scenario is like this, I get some hexadecimal value from CAN (A hardware device) , for one perticular value I have to read 4th byte
TAG : java
Date : November 22 2020, 10:56 AM , By : user2956419
How to create watermark in image just like Google maps watermarks
How to create watermark in image just like Google maps watermarks
like below fixes the issue How to create watermark in image just like Google maps watermarks ? I mean transparency style. , Load the original image...
TAG : java
Date : November 22 2020, 10:56 AM , By : user2956411
how come Thread class called inside another class?
how come Thread class called inside another class?
I wish did fix the issue. Yes it is possible, your code is a proof of this. You can always use static members of a given class without instanciating the class. Roughly, in Java every class is an object that you don't have to instanciate, on which you
TAG : java
Date : November 22 2020, 10:56 AM , By : user2956407
AssertionError: Unexpected schema version 0: Unexpected schema version 0
AssertionError: Unexpected schema version 0: Unexpected schema version 0
To fix this issue This issue was filed recently this year. Take a look here issues androidTrying updating your IDE and try disabling assertions in the IDE (in the idea.properties file).
TAG : java
Date : November 22 2020, 10:56 AM , By : user2956393
getResourceAsStream always returning null (Google App Engine)
getResourceAsStream always returning null (Google App Engine)
I think the issue was by ths following , I am having a bit of a problem with my code and that it always throws NullPointerException: , The answer is to do this:
TAG : java
Date : November 22 2020, 10:54 AM , By : user2956368
In Android Native app failed to create a client socket. Error code:14 Unable to create socket: Permission denied
In Android Native app failed to create a client socket. Error code:14 Unable to create socket: Permission denied
I wish this help you should have added "android.permission.INTERNET" and "android.permission.ACCESS_NETWORK_STATE" android permissions in the AndroidManifest.xml.
TAG : java
Date : November 22 2020, 10:54 AM , By : user2956366
Error while connecting my login page with the JDBC code
Error while connecting my login page with the JDBC code
hope this fix your issue Your expectations don't match realty, the method you are calling is declared as returning boolean
TAG : java
Date : November 22 2020, 10:54 AM , By : user2956350
Host java web service with jelastic
Host java web service with jelastic
will help you Do you want to connect to the specific port in your environment which differs from 80, 8080? If so - you should have an external IP address (Public IPv4) in your environment.
TAG : java
Date : November 22 2020, 10:54 AM , By : user2956348
Android SDK error
Android SDK error
I hope this helps you . You have redundant environmental variables !! only PATH and JAVA_HOME are required.. JDK_HOME, JAVA_PATH are not required.. further more if you have eclipse and ADT, open eclipse go to 'window' then select 'android sdk manager
TAG : java
Date : November 22 2020, 10:54 AM , By : user2956321
run process (command) on a remote linux machine from java
run process (command) on a remote linux machine from java
To fix the issue you can do I want to run a command in another server from my java code. , Yes you can, one of the way:
TAG : java
Date : November 22 2020, 10:54 AM , By : Annie
Hbase scan is returning deleted rows
Hbase scan is returning deleted rows
I wish this help you It has nothing to do with major compactions (they run every ~24 hours by default). When you delete a row the deleted data will be ignored by HBase until finally removed (on major_compactions). Just be noticed that if you don't ha
TAG : java
Date : November 22 2020, 10:54 AM , By : user2956298
C++ - Alternative to Integer.parseInt() and String.valueOf()
C++ - Alternative to Integer.parseInt() and String.valueOf()
Does that help For Integer.parseInt you can use std::stoi, std::istringstream, sscanf, atoi etc.For String.valueOf() alternatives, you can std::ostringstream, sprintf, std::tostring etc.
TAG : java
Date : November 22 2020, 10:54 AM , By : Saied Attallah
Strategy to avoid ClassCastException in Java
Strategy to avoid ClassCastException in Java
I hope this helps you . instanceof is the Java equivalent of C's is. There's no direct equivalent of as; you have to do the downcast after checking.
TAG : java
Date : November 22 2020, 10:54 AM , By : hivefans
FreeMarker template error! in struts2
FreeMarker template error! in struts2
I wish this help you The exception is telling you exactly where to look for the error:
TAG : java
Date : November 22 2020, 10:54 AM , By : user2956247
What is the terminology for this Java code structure?
What is the terminology for this Java code structure?
wish of those help This is called as the Anonymous class.This is from the Oracle docs:
TAG : java
Date : November 22 2020, 10:54 AM , By : Sinpatogo
Cannot Access Variable From Another Class
Cannot Access Variable From Another Class
like below fixes the issue displacement is a local variable in your constructor. Therefore it won't be accessible outside the constructor.If you want it to be accessible to other methods in the class, move it out of the constructor and make it an ins
TAG : java
Date : November 22 2020, 10:54 AM , By : user2956240
Unable to switch between frames in WebDriver
Unable to switch between frames in WebDriver
should help you out Before switching to resultsFrame try to switch to defaultContent or your main frame and then switch to resultsFrame. The thing is webdriver searches the frame in current context. So under searchFrame it will never find the results
TAG : java
Date : November 22 2020, 10:54 AM , By : user2956236
Java in Android, Problems in array
Java in Android, Problems in array
I wish this helpful for you I'm trying to use the array in my android program. , The statement
TAG : java
Date : November 22 2020, 10:54 AM , By : iY-D
Java program stop work
Java program stop work
this one helps. 10mb is a very small amount of memory, and before I go any further I want to make it clear that it is not enough memory. The permanent space is taking up 55.08% of that amount. Old generation is taking up 34.90%, and the Eden space is
TAG : java
Date : November 22 2020, 10:54 AM , By : user2956194
i set my array now i have to get the entire array (Java)
i set my array now i have to get the entire array (Java)
hop of those help? Assuming getFoo() returns an the array foo (which seems to be the case from your for loop statement), you can access index x of foo with:
TAG : java
Date : November 22 2020, 10:54 AM , By : user2956190
Getting content of function (Between curly braces)
Getting content of function (Between curly braces)
this one helps. I have a class with "n" complex functions like this:
TAG : java
Date : November 22 2020, 10:54 AM , By : Rasith
Java Singleton Methods not Working
Java Singleton Methods not Working
To fix this issue Your issue is that method calls in Java have to be in a method. So the issue you're having actually has little to do with the Singleton pattern at all, it's that you're trying to make a call in the body of a class, rather than a met
TAG : java
Date : November 22 2020, 10:54 AM , By : user2956150
Android Volley imageloader with % progress while downloading images
Android Volley imageloader with % progress while downloading images
seems to work fine In your situation, you made loading an image as download a file, ImageLoader basically perform a single-session request, does not fulfill your purpose. if you still looking for a library that advantage by Volley but offered a file
TAG : java
Date : November 22 2020, 10:54 AM , By : user2956145
Error when to compile my theme with vaadin 7.3 and valo theme
Error when to compile my theme with vaadin 7.3 and valo theme
I hope this helps . I'm developing a vaadin application which used vaadin v7.2. Now it is updated to v7.3.7 and used the new valo theme with my custom styles. When compiling the whole project using mvn clean install the theme getting compile perfectl
TAG : java
Date : November 22 2020, 10:54 AM , By : user2956118
Is there a way to remove frame decoration without re-opening it?
Is there a way to remove frame decoration without re-opening it?
hop of those help? The method setUndecorated() can only be used if the frame is not displayable. What you could do is make your frame not displayable by calling dispose().Your method setFullScreen() could look like this:
TAG : java
Date : November 22 2020, 10:48 AM , By : user2955986
Android CountDownTimer Class Lagging Main Thread
Android CountDownTimer Class Lagging Main Thread
Hope that helps I decided to take a different approach which has served my purposes very well. No lag or thread issues and can easily be restarted over and over. Hope this helps someone out.
TAG : java
Date : November 22 2020, 10:48 AM , By : user2955982
Java Generics method code duplication issue regarding primitive arrays
Java Generics method code duplication issue regarding primitive arrays
it fixes the issue You can avoid (most of) the duplication by using Array class. But it's not pretty: your constructor parameter would have do be of type Object, and you'd have to just trust your caller to pass the actual array there, and not a Socke
TAG : java
Date : November 22 2020, 10:48 AM , By : user2955981
Misunderstanding of Instances and Declarations
Misunderstanding of Instances and Declarations
I wish this help you The line public static Board board; declares a variable that can refer to a board. In a way, think of it like a box - you created an empty box. It has nothing in it, but you now have the ability to put something in that box.Each
TAG : java
Date : November 22 2020, 10:48 AM , By : user2955971
using enum list as parameter in HQL query
using enum list as parameter in HQL query
it should still fix some issue I have an entity called Band with a attribute List genres, Genres is a ENUM with the following values: ALTERNATIVE_ROCK("Alternative Rock"), CLASSIC_ROCK("Classic Rock"), HARD_ROCK("Hard Rock"), HEAVY_METAL("Heavy Metal
TAG : java
Date : November 22 2020, 10:48 AM , By : user2955941
Using Libgdx seek behaviour with box2d?
Using Libgdx seek behaviour with box2d?
wish of those help SteeringAcceleration is just a class that holds the linear and angular acceleration that the seek behavior has calculated.
TAG : java
Date : November 22 2020, 10:48 AM , By : user2955910

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