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JAVA QUESTIONS

Multiple different nested objects in json to retrofit
Multiple different nested objects in json to retrofit
seems to work fine my json pic, please click 1 and 2. hopefully understandable enough. , Okey I did, this is my solution. and it works.
TAG : java
Date : October 31 2020, 05:01 AM , By : Brett Sichello
Implement Filter Design Pattern for generic cases (i.e. filter specific String attributes)
Implement Filter Design Pattern for generic cases (i.e. filter specific String attributes)
This might help you That design pattern is obsolete since the addition of the Stream API in Java 8. Criteria are now defined by the Predicate interface and executed by the filter method.
TAG : java
Date : October 31 2020, 05:01 AM , By : Martin
Java - Find the row and column with the max sum
Java - Find the row and column with the max sum
will help you As the title says, I want to know a way (in Java) to find which row (in a matrix/2D Array) and column has the highest sum of its numbers. There might be an easy solution but I'm struggling to find it. , You can use the following logic a
TAG : java
Date : October 31 2020, 05:01 AM , By : Dave Finnie
Best way to store a run count for a recursive Runnable that is run by a Handler?
Best way to store a run count for a recursive Runnable that is run by a Handler?
fixed the issue. Will look into that further There are already classes that you could use instead, like AtomicInteger, or similar, but slightly different LongAdder. You instantiate an object of that class, and then you can simply invoke various metho
TAG : java
Date : October 31 2020, 05:01 AM , By : Johnathan Myers
SimpleJdbc, Invalid Conversion Requested
SimpleJdbc, Invalid Conversion Requested
will help you Using Oracle database This is my testMethod , I got it resolved by changing this :
TAG : java
Date : October 31 2020, 05:01 AM , By : Dammy
PalindromeCheck efficiency for Int in Java
PalindromeCheck efficiency for Int in Java
This might help you I bet the second algorithm would be faster, and obviously more space efficient. If you assume n be the number of digits of the input number, in the first algorithm: Integer.toString requires n steps to convert it to String. palind
TAG : java
Date : October 31 2020, 05:01 AM , By : Sorin Florea
Why does acquiring an Azure AD token by refresh token have no signing algorithm?
Why does acquiring an Azure AD token by refresh token have no signing algorithm?
may help you . I did not reproduce your issue on my side. I followed this tutorial to get Authentication code and acquire access token and refresh token with below code successfully. Please refer to it.
TAG : java
Date : October 31 2020, 05:01 AM , By : Amiram Deutsch
Water Jug Problem java.lang.OutOfMemoryError: Java heap space
Water Jug Problem java.lang.OutOfMemoryError: Java heap space
To fix the issue you can do The problem was that I used both states.add(start) and states.addAll(addStates(child,states)), meaning that I added each element a huge number of times. After fixing this, the code worked perfectly fine.
TAG : java
Date : October 31 2020, 05:01 AM , By : user2178066
Cannot build SBT project with Scala 2.12.8
Cannot build SBT project with Scala 2.12.8
it fixes the issue Ok, I solved it. In IntelliJ, sbt configuration was set to JRE 1.8. I changed it to jdk 10 and finally project built.
TAG : java
Date : October 31 2020, 05:01 AM , By : user2178059
Get String value from Edit Text with databinding
Get String value from Edit Text with databinding
hop of those help? I found a tweak that works great :in the view (xml file) add this :
TAG : java
Date : October 31 2020, 05:01 AM , By : sult4n
Data model class not returning fields in defined order
Data model class not returning fields in defined order
To fix the issue you can do The order you are using to populate an AuditRecord instance doesn't really matter. It matters how its fields get serialised and what order the underlying JSON marshaller has chosen.If you are utilising Jackson, here's the
TAG : java
Date : October 31 2020, 05:01 AM , By : michaelmuenzer
Rolling hash overflow/negative result protection
Rolling hash overflow/negative result protection
I think the issue was by ths following , This question is very similar to rolling-hash, but there are some specifics regarding overflow/negative result which are still not clear to me. , First question:
TAG : java
Date : October 31 2020, 05:01 AM , By : Jeff Fisher
Don't work spring.config.additional-location
Don't work spring.config.additional-location
I wish this help you The property: spring.config.additional-location has to be provided as program argument like this: java -jar whatever.jar --spring.config.additional-location=classpath:/profile/application-local.properties.Doesn't make sense to ha
TAG : java
Date : October 31 2020, 05:01 AM , By : Shahed Alfaifi
How can I get the shuffler method to only shuffle certain indexes in an array? While not shuffling indexes which I want
How can I get the shuffler method to only shuffle certain indexes in an array? While not shuffling indexes which I want
I hope this helps . My problem is as follows: , Simply skip the whitespace indices:
TAG : java
Date : October 31 2020, 05:01 AM , By : Oru Manyo
How do I simplify this implementation of split()?
How do I simplify this implementation of split()?
it fixes the issue I made a new Split implementation from scratch, that at least in my opinion (subjective) is "simpler" to comprehend. You may or may not find it useful.
TAG : java
Date : October 31 2020, 05:01 AM , By : Drake1979
Trying to convert a JLabel to JList using a setCellRenderer
Trying to convert a JLabel to JList using a setCellRenderer
it helps some times Swing components, by default, display the string form of each data object. So, you can remove the cell renderer, and provide a toString method in your MRQueueTopicCreate class:
TAG : java
Date : October 31 2020, 05:01 AM , By : Linz Parsons
Set maximum recursion depth in java
Set maximum recursion depth in java
Any of those help I know this question has been answered already via numerous methods: , Create this class:
TAG : java
Date : October 31 2020, 05:01 AM , By : Courtney Mahala
Does methods of Java execute operations better?
Does methods of Java execute operations better?
This might help you It depends. The implementation of the "standard" method might have an implementation that is more (or less) efficient than yours The "standard" method might be executed a lot of time by other pieces of code (the JDK classes itself
TAG : java
Date : October 30 2020, 05:01 AM , By : user2177754
How to use a bubble sort to sort a multidimensional array in Java
How to use a bubble sort to sort a multidimensional array in Java
To fix this issue If I understand you correctly, you have a 2d array structure like this:
TAG : java
Date : October 30 2020, 05:01 AM , By : user2177742
Is there a Micronaut analogue for Spring @RequestScope?
Is there a Micronaut analogue for Spring @RequestScope?
will help you This feature has been added since version 1.2.0.RC1You can find documentation here
TAG : java
Date : October 30 2020, 05:01 AM , By : user2177741
How to read hex values from file into byte array?
How to read hex values from file into byte array?
this one helps. Just thought I'd point out that if you loosen the specification a little bit, you can essentially do this in one line with splitAsStream.
TAG : java
Date : October 30 2020, 05:01 AM , By : Joseph Fleshman
java security policy doesn't work as expected, always give AccessControlException
java security policy doesn't work as expected, always give AccessControlException
I hope this helps . Use forward slashes instead of backslashes in the codeBase URL in your myPolicy.txt. You may also need a slash between the "classes" and the "*".Per the PolicyFiles documentation:
TAG : java
Date : October 30 2020, 05:01 AM , By : mariusch
SQLite Foreign Key is null AndroidStudio
SQLite Foreign Key is null AndroidStudio
With these it helps You appear to have two issues/misunderstandings.The first is that specifying a foreign key doesn't automatically select a suitable value and update the column with such a value. Rather defining a foreign adds a constraint that say
TAG : java
Date : October 30 2020, 05:01 AM , By : Aynshaw
Can we write this without an import statement by any chance? Just wondering
Can we write this without an import statement by any chance? Just wondering
wish help you to fix your issue Yes you can. Import statements just allow you to use the shorthand name for the Object. You can just specify the whole name:
TAG : java
Date : October 30 2020, 05:01 AM , By : ridha
How to put multiple TilePane in a group/list in JavaFx or FXML?
How to put multiple TilePane in a group/list in JavaFx or FXML?
hope this fix your issue why not give id to parent of this tiles, and then just do something like this
TAG : java
Date : October 30 2020, 05:01 AM , By : Andre Tovar
How to sign with RSASSA-PSS in Java correctly?
How to sign with RSASSA-PSS in Java correctly?
like below fixes the issue I edited my question with the correct algorithm to create the signature with java bouncycastle.
TAG : java
Date : October 30 2020, 05:01 AM , By : Fred895fh
How can I configure the JDK for gradlew to use, on a per machine, per project basis?
How can I configure the JDK for gradlew to use, on a per machine, per project basis?
wish helps you http://www.jenv.be/ is a tool that is literally made to solve problems like this.What's jEnv ?
TAG : java
Date : October 30 2020, 05:01 AM , By : Алексей Леванов
Why are some of the headers restricted in HttpURLConnection after JDK 1.6?
Why are some of the headers restricted in HttpURLConnection after JDK 1.6?
this will help The first link says in a note (green text):
TAG : java
Date : October 30 2020, 05:01 AM , By : user2177554
Instrumenting a Java Application With Prometheus
Instrumenting a Java Application With Prometheus
around this issue Your application is fine. Just make sure to test it by hitting the /metrics endpoint. This is how prometheus collects the metrics from your application.
TAG : java
Date : October 30 2020, 05:01 AM , By : ebby
Identifying changed fields in java POJO class
Identifying changed fields in java POJO class
hope this fix your issue If i understand correctly you can have custom method that checks non null fields and non empty fields and log them (you can customize how ever you want)
TAG : java
Date : October 30 2020, 05:01 AM , By : user2177496
Config Maps to Connect Strings
Config Maps to Connect Strings
this will help You can set multiple environment variables from one configMap as documented here.But I would recommend storing passwords and connection strings with sensitive information in a secret.
TAG : java
Date : October 30 2020, 05:01 AM , By : user2177495
UnsupportedClassVersionError... but with same JAVA version
UnsupportedClassVersionError... but with same JAVA version
it helps some times As pointed in comments, sometimes JAVA_HOME is not checked and the decision on what jvm should be used is taken with another criteria (can't say which ones). So removing the old version of java forced the process to choose the des
TAG : java
Date : October 30 2020, 05:01 AM , By : dja014
Central auth server with multiple clients using resource owner password credentials oauth flow
Central auth server with multiple clients using resource owner password credentials oauth flow
I wish this helpful for you For those that were curious, here is how I set up the authentication provider on my client (app1). I still have issues with the resource server (ill ask a separate question), but here is what I did:Custom authenticator:
TAG : java
Date : October 30 2020, 05:01 AM , By : user2177458
Using Jprofiler Controller with weblogic process in offline mode
Using Jprofiler Controller with weblogic process in offline mode
will help you The controller class is only functional in a JVM where the profiling agent is loaded, usually by starting the JVM with the -agentpath: VM parameter.In your case, you call the controller class in a process where the profiling agent is no
TAG : java
Date : October 30 2020, 05:01 AM , By : Verkas
My "Enter the secret code" method is printing out the wrong output
My "Enter the secret code" method is printing out the wrong output
wish help you to fix your issue I currently have a game where the user needs to type in the secret code correctly to play the game. However, each time I type in "game" as the user code, it prints out Goodbye!, rather than play the game. Can someone e
TAG : java
Date : October 29 2020, 05:01 AM , By : user2177405
Package maven app into a single jar - with an exception
Package maven app into a single jar - with an exception
wish of those help Probably Including and Excluding Artifacts will help you.To be more specific, you need to create your own assembly.xml file:
TAG : java
Date : October 29 2020, 05:01 AM , By : Deepak
Return List from forEach using Stream in java
Return List from forEach using Stream in java
will help you With streams you generally want to avoid creating empty lists and then adding items. Streams should use functional idioms and avoid side effects as much as possible. It's better to work with the stream as a whole and then "collect" the
TAG : java
Date : October 29 2020, 05:01 AM , By : أسامة الورفلي
compareTo comparison method violates its general contract
compareTo comparison method violates its general contract
like below fixes the issue You are violating the contract of the compare method, your relationship is not transitive. "The implementor must ensure that sgn(compare(x, y)) == -sgn(compare(y, x)) for all x and y"Consider this:
TAG : java
Date : October 29 2020, 05:01 AM , By : yemiz
Slow message consumption using AmazonSQSClient
Slow message consumption using AmazonSQSClient
Does that help Starvation on the ConsumerOne possible optimization that JMS clients tend to implement, is a message consumption buffer or "prefetch". This buffer is sometimes tunable via the number of messages or by a buffer size in bytes.
TAG : java
Date : October 29 2020, 05:01 AM , By : gahlord dewald
NullPointerException problem for paint and paintComponent
NullPointerException problem for paint and paintComponent
With these it helps The problem seems to be that you never initialize type. So whenever you call type.enemy() or something, it throws a NullPointerException because type hasn't been defined.The solution would be to do something like private TileType
TAG : java
Date : October 29 2020, 05:01 AM , By : user2177276
Using Callable instead of Supplier or vice versa
Using Callable instead of Supplier or vice versa
I wish this helpful for you I did not see any threads spawning across to use Callable. But is it okay to use Callable instead of Supplier.
TAG : java
Date : October 29 2020, 05:01 AM , By : user2177272
how to get the title of the listview in androidstudio
how to get the title of the listview in androidstudio
I wish this helpful for you I was writing a code to get the contacts in the phone with the below code StoreContacts.add(name + "\n"+ phonenumber) , You can use String.split() method to split string by given strings
TAG : java
Date : October 29 2020, 05:01 AM , By : user2177224
CRD creation with java-client for Kubernetes
CRD creation with java-client for Kubernetes
I wish this helpful for you Yes, But not only with java client. So first use some lib to read yanl and convert it to JSON. And then USe K8s api for Custom Resource Object or what ever you want to do.
TAG : java
Date : October 29 2020, 05:01 AM , By : user2177192
How do I draw shape on the JPanel, also linking the shape with an event control?
How do I draw shape on the JPanel, also linking the shape with an event control?
fixed the issue. Will look into that further I've made a code to draw a simple oval in a panel and then according to the button clicked (left or right) or arrow button, it will move accordingly. This code I have here doesn't seem to make the shape ap
TAG : java
Date : October 29 2020, 05:01 AM , By : Sinan Dinç
Execute and implement java file from command prompt
Execute and implement java file from command prompt
Does that help If you create a java class (for example MyProgram.java) with thepublic static void main(String [] args)
TAG : java
Date : October 29 2020, 05:01 AM , By : notexistence
Accessing JAX-WS Published Endpoint is Not Working
Accessing JAX-WS Published Endpoint is Not Working
help you fix your problem I did an example with your code, and it works.. you have to add this to the browser to seehttp://localhost:9999/ws/hello?wsdl
TAG : java
Date : October 29 2020, 05:01 AM , By : user2177101
Springboot - injection from application.yml depending method name
Springboot - injection from application.yml depending method name
like below fixes the issue Spring takes your property full name easy.app.pairMap find ConfigurationProperties by prefix easy.app and then it try to find setter with name setPairMap, it takes property name pairMap and "converts" it to setPairMap.If yo
TAG : java
Date : October 29 2020, 05:01 AM , By : Dovydas
How to connect words from two lists in Java
How to connect words from two lists in Java
I hope this helps you . I want to create a sentence from words from two different lists. Like the example above: , Use an IntStream:
TAG : java
Date : October 28 2020, 07:41 AM , By : nennogabriel
Cannot resolve symbol QueryParser Lucene 7.5
Cannot resolve symbol QueryParser Lucene 7.5
Hope that helps Lucene ships with several JARs. Did you include lucene-queryparser-7.5.0.jar in addition to lucene-core-7.5.0.jar? It's in the queryparser/ directory next to the core/ directory. Add that one too and it should resolve.
TAG : java
Date : October 28 2020, 07:41 AM , By : Лярва Гугура
null String when retrieving data from Firebase
null String when retrieving data from Firebase
may help you . weird problem: , To solve this, please use the following lines of code:
TAG : java
Date : October 28 2020, 07:41 AM , By : mustafa.soylu
Convert Item to Map<String, AttributeValue> for DynamoDB in Java
Convert Item to Map<String, AttributeValue> for DynamoDB in Java
it helps some times Is there any Java API for DynamoDB to convert from Item to Map without implementing it on my own? , Yeah, but I've managed to find it:
TAG : java
Date : October 28 2020, 07:41 AM , By : qczy
grouping on list of objects using lambda in java
grouping on list of objects using lambda in java
Hope that helps This should work The steps are Group the inputs by setId , which will create a map with setIds as keys and list of related inputs as values For each grouped list of inputs, turn then into a question-answer map The result will be a map
TAG : java
Date : October 28 2020, 07:41 AM , By : sujeitodosom
Spring HATEOAS does not respect default inclusion property for resource link
Spring HATEOAS does not respect default inclusion property for resource link
it helps some times The problem was in my configuration class, I was registering the Hibernate5Module in a wrong way, removed these lines
TAG : java
Date : October 28 2020, 07:41 AM , By : user2176971
How to use gradle 'api' dependency
How to use gradle 'api' dependency
it should still fix some issue The api configuration comes from the java-library plugin, in your build script you have just applied java plugin. See https://docs.gradle.org/current/userguide/java_library_plugin.html
TAG : java
Date : October 28 2020, 07:41 AM , By : mamoud
How to change my statement to print frequencies of object member type in hashmap?
How to change my statement to print frequencies of object member type in hashmap?
wish help you to fix your issue Essentially what you're doing is called "grouping" based on the favourite color.Here is another approach:
TAG : java
Date : October 28 2020, 07:41 AM , By : raship patel
How Chrome added text to tab switcher in a drawable?
How Chrome added text to tab switcher in a drawable?
it helps some times Judging from the layout boundaries(enabled from Developers Option), It is a custom view or drawable.
TAG : java
Date : October 28 2020, 07:40 AM , By : Xeriko
Calendar give wrong day
Calendar give wrong day
seems to work fine I get from my GPS tracker a time String in UTC-Format like this: hhmmss.ssss. , What went wrong in your code? Your bug is in this line:
TAG : java
Date : October 28 2020, 07:40 AM , By : John Smit
DataBinding not Updating TextView when notifyPropertyChanged(BR.xx) is used
DataBinding not Updating TextView when notifyPropertyChanged(BR.xx) is used
seems to work fine I have a working dataBinding for the functions being called from XML (ie."@{user.mUCL}"). But When i use notifyPropertyChanged(BR.mUCL) in any method or anywhere New values dont get updated, I have provided a sample issue below, wh
TAG : java
Date : October 28 2020, 07:40 AM , By : mazvv
How to give parameters to hashmap getMethod
How to give parameters to hashmap getMethod
wish of those help I have this code: , Change signature of method to declare desired arguments
TAG : java
Date : October 28 2020, 07:40 AM , By : maximilian.f
JAXB Binding Exception
JAXB Binding Exception
like below fixes the issue I would guess that you're running XJC under Java6, and have the jaxb-api.jar on your classpath. The classes from the Java6 runtime are clashing with the classes in jaxb-api.jar. Remove the JAR from the classpath, that shoul
TAG : java
Date : October 27 2020, 03:37 PM , By : Naveen

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