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JAVA QUESTIONS

"Invalid classification data: expect label value"
"Invalid classification data: expect label value"
I wish this help you problem solved: Change the third parameter of RecordReaderDataSetIterator inDataSetIterator testIter = new RecordReaderDataSetIterator(rrTest, batchSize,0, 2); from 0 to 2; because the data set has three columns and the index of
TAG : java
Date : October 21 2020, 08:10 AM , By : developer_expert
Intent .putExtra return null with PendingIntent
Intent .putExtra return null with PendingIntent
Does that help You are adding the "extra" to the Intent that you pass to AlarmManager. This "extra" will be in the Intent that gets delivered to your BroadcastReceiver in onReceive(), but you don't do anything with it there. When you click on the Not
TAG : java
Date : October 20 2020, 08:10 PM , By : AnjunaTom
Draw shapes on scrollable JPanel
Draw shapes on scrollable JPanel
This might help you Your image-drawing JPanel must be the same JPanel that draws the rectangle and that has the MouseAdapter added to it. For instance:
TAG : java
Date : October 20 2020, 08:10 PM , By : user2173541
Can't connect to redis from spring inside docker container
Can't connect to redis from spring inside docker container
this one helps. Well, I finally got them talking by running redis in its own containerI launched a redis container like so:
TAG : java
Date : October 20 2020, 08:10 PM , By : Derek
Display base64-encoded image
Display base64-encoded image
it helps some times When a JTextPane sees an tag, it will check if the image exists in a cache, and if not, it will try to read the image from the url. The html library used by JTextPane does not support base64 encoded image data in the tag, so we wi
TAG : java
Date : October 20 2020, 08:10 PM , By : Satyajit
Android cardview, change background color with switch listener
Android cardview, change background color with switch listener
I think the issue was by ths following , I have a cardview with a switch inside. When the switch is on, I want to change the background color of the card to green, when is off(by default it is) instead is red. I also need to save the switch state loc
TAG : java
Date : October 20 2020, 08:10 PM , By : The Haff
Multiple classpaths when running Ant taskdef?
Multiple classpaths when running Ant taskdef?
seems to work fine So, I messed around in A.jar and learned that getClass().getClassLoader() and Thread.currentThread().getContextClassLoader() return different things. The getClass().getClassLoader() contains the ANT classpath that I set in the ANT
TAG : java
Date : October 20 2020, 08:10 PM , By : Ahmed.Mamdouh
Disabling sound on Android's Ongoing notification updating
Disabling sound on Android's Ongoing notification updating
I wish did fix the issue. I have an Ongoing notification that shows Date and updates every minute inside a service. But in android 8 it plays sound in every update and users confused whats happening. , In your notification channel try to set the soun
TAG : java
Date : October 20 2020, 08:10 PM , By : Poun
ChartPanel not registering as a component in a GUI
ChartPanel not registering as a component in a GUI
it fixes the issue As shown in the source for org.jfree.chart.ChartPanel, a ChartPanel is a JPanel, but it contains no nested instances of Component. A handful of Swing components are imported to handle a context menu, tooltips, etc., but the enclose
TAG : java
Date : October 20 2020, 08:10 PM , By : user2173433
Spring @Configuration not overriden in test context
Spring @Configuration not overriden in test context
seems to work fine I managed to do make this work using @Profile and @ActiveProfiles. But i had to extract my static inner @Configuration class to another java file and then it automagically started to work. Still haven't found why it worked in earli
TAG : java
Date : October 20 2020, 08:10 PM , By : user2173432
How can i solve duplication of code in this?
How can i solve duplication of code in this?
wish help you to fix your issue Supposing that Ingredient is the base class of these different classes and that this class defines the isVegan() method, you could create a Stream from all these objects and computing whether all are vegan :
TAG : java
Date : October 20 2020, 08:10 AM , By : user2173732
Method undefined for object in java cannot be compiled and deployed
Method undefined for object in java cannot be compiled and deployed
seems to work fine Either you have to define the response() method inside your Application class file, or you need to define them in your Controller class which your Application class inherits. You are getting that error because it cannot find any de
TAG : java
Date : October 20 2020, 08:10 AM , By : user2173726
Peek at a value from an array with a probabilistic quantity
Peek at a value from an array with a probabilistic quantity
will help you The alias method is an algorithm for the general problem of taking a set of probabilities for a number of possible values and precomputing some tables to be able to select an element with the specified probability distribution in O(1),
TAG : java
Date : October 20 2020, 08:10 AM , By : user2173690
java - how to limit operation(e.g login) by cowndown timer
java - how to limit operation(e.g login) by cowndown timer
help you fix your problem i need some help in my login GUI form (created with javax.swing), basically i want to (kind of block) a user from login at 10 failure attempt for amount of time, it starts with 5 seconds, every thing fine first time, but whe
TAG : java
Date : October 20 2020, 08:10 AM , By : user2173625
How can I search informations from file with names using input (java)?
How can I search informations from file with names using input (java)?
To fix this issue Take a look on your code, in the last cycle you have condition if-else and this condition will finish the cycle if first candidate name not equals (else executed, and you have break inside it) or this condition will finish the cycle
TAG : java
Date : October 20 2020, 08:10 AM , By : Dan Offord
'Gradle cucumber' With testImplementation Not Working
'Gradle cucumber' With testImplementation Not Working
this one helps. See here which says that testRuntime is deprecated
TAG : java
Date : October 19 2020, 08:10 PM , By : user2173916
Log4j2/Slf4j and Java 11
Log4j2/Slf4j and Java 11
I think the issue was by ths following , According to the Log4j documentation:
TAG : java
Date : October 19 2020, 08:10 PM , By : Martin Stewart
Subclasses with Java 8 lambdas and Optional
Subclasses with Java 8 lambdas and Optional
it helps some times The type emitted from map() is inferred as JSendFailResponse, but you’re offering a different type in orElse() and both types must agree.Explicitly type to call to map() with a common type:
TAG : java
Date : October 19 2020, 08:10 PM , By : mat72
Optaplanner - Drools rules List<> memberOf List<>?
Optaplanner - Drools rules List<> memberOf List<>?
hop of those help? I never use the drools construct not memberOf in OptaPlanner cases. Maybe because of habit, maybe because it slow or brittle).FWIW, this is very similar to the skill requirement in optaweb-employee-rostering which just uses plain j
TAG : java
Date : October 19 2020, 08:10 PM , By : GCO studios
Problem with sending keys to a form field when there is no submit button available
Problem with sending keys to a form field when there is no submit button available
seems to work fine You're hitting a timing problem. Selenium is typing really fast then pressing the enter key. Do the actions manually and you will see a slight delay between typing an getting results based on what you typed.I have sample code that
TAG : java
Date : October 19 2020, 08:10 PM , By : Rbi Tester
Does anyone know how to add a value to org.w3c.dom.Element to instantiate both MiningSchema and SupportVectorMachineMode
Does anyone know how to add a value to org.w3c.dom.Element to instantiate both MiningSchema and SupportVectorMachineMode
will help you I have a github repo here that has all of my code in it. The snippet that gives me a null pointer is in Model, nullpointer at Model:32. I'm still not completely sure what to do here. I have everything else ready to work, this is the one
TAG : java
Date : October 19 2020, 08:10 PM , By : user2173808
Is it possible to use a different Spring Batch Sequence than the default one?
Is it possible to use a different Spring Batch Sequence than the default one?
I wish this help you Rather than these I want to make use of my own sequences, is it possible to do that?
TAG : java
Date : October 19 2020, 08:10 PM , By : Ferdiconmary
Java derby embedded DB error: The syntax of the string representation of a date/time value is incorrect
Java derby embedded DB error: The syntax of the string representation of a date/time value is incorrect
should help you out Indeed, there is no standardization of the default string format for date and time datatypes across database systems, so issuing SQL queries with dates in literal string format is quite non-portable.A much more portable way is to
TAG : java
Date : October 19 2020, 08:10 AM , By : Shahzad Ahsan
WeakReference of a Collection in java
WeakReference of a Collection in java
I hope this helps you . As long as the List itself is not weakly reachable its elements will not be either. (Assuming the list implementation itself does not use weak references or similar)So there is no problem with having the list cached with a wea
TAG : java
Date : October 19 2020, 08:10 AM , By : kryss
Getting an average of doubles from ArrayList
Getting an average of doubles from ArrayList
will help you I am not sure what you are asking in the question, but I think this is what you are looking for.
TAG : java
Date : October 19 2020, 08:10 AM , By : user2173992
Detecting circular references in Directed acyclic graph
Detecting circular references in Directed acyclic graph
help you fix your problem Instead of the boolean visited[] array, you can use a int state[] array, where 0 means 'not yet visited, 1 means 'in progress', and 2 means 'done'. Then when the current node depends on one that is 'in progress', you know yo
TAG : java
Date : October 19 2020, 08:10 AM , By : Arijit
Unexpected behavior sending object through socket in java
Unexpected behavior sending object through socket in java
To fix this issue Java Serialization can handle cycles all sorts of object graph. It does this by sending back references instead of serialising the object twice.The second time you are sending the object, you are just sending a reference. You need t
TAG : java
Date : October 18 2020, 08:10 PM , By : user2174302
null object reference on data binding
null object reference on data binding
With these it helps Okay, so I don't know if this is common for all android developers but in my layout folder, I have 2 layouts per activities: one for landscape and one for the other view. They are both named the same way (in my case activity_login
TAG : java
Date : October 18 2020, 08:10 PM , By : Anbukumar
Why am I getting an ArrayIndexOutOfBoundsException in this particular code?
Why am I getting an ArrayIndexOutOfBoundsException in this particular code?
this will help You're declaring the array dist[] with the length of V. And then you're using graph.edge[j].src as an index for the dist[] array. This is why you are getting an ArrayIndexOutOfBoundsException. In short, this means that the src value is
TAG : java
Date : October 18 2020, 08:10 PM , By : Mira Android
Deserialize encrypted kafka message in consumer
Deserialize encrypted kafka message in consumer
I think the issue was by ths following , If I set value.deserializer in consumer config as "KafkaAvroDeserializer.class", I don't see any messages being consumed.
TAG : java
Date : October 18 2020, 08:10 PM , By : bogdan
Program using I/O & Strings. | Basic Inventory Markup Calculator
Program using I/O & Strings. | Basic Inventory Markup Calculator
I wish this helpful for you If that is all your code, then you need to flush and / or close the file to get the data written to the disk.Add outFile.close() in your code when you are done writing.
TAG : java
Date : October 18 2020, 08:10 PM , By : Katerina Monokuro
Kafka Avro Serializer and deserializer exception. Avro supported types
Kafka Avro Serializer and deserializer exception. Avro supported types
Hope this helps TweetInfoDto cannot be a plain Java object that you have defined yourself. It ideally should be created from an Avro schema via the Avro Maven Plugin, for example.
TAG : java
Date : October 18 2020, 08:10 PM , By : user2174232
How to get links from HTML, correct usage of `doc.select`
How to get links from HTML, correct usage of `doc.select`
it should still fix some issue It's not clear what you're trying to achieve.To print a string of all the links, you might do this:
TAG : java
Date : October 18 2020, 08:10 PM , By : Locke
Replace this lambda with a method reference
Replace this lambda with a method reference
wish help you to fix your issue You can't put Integer::toString because Integer has two implementations that fit to functional interface Function, but you can use String::valueOf instead:
TAG : java
Date : October 18 2020, 08:10 PM , By : user2174209
JsonPath ignore the Debug logs on output
JsonPath ignore the Debug logs on output
hop of those help? This question was actually asked on 2017 on their official github page.Looks like you need to use a logback as the log implementation
TAG : java
Date : October 18 2020, 08:10 PM , By : Sikender Khan
Spring boot parsing @RequestBody
Spring boot parsing @RequestBody
Does that help I have this old endpoint that I am trying to upgrade to using spring boot. It is currently used by a few services so I would like to keep it the same. , First, convert the body to a map:
TAG : java
Date : October 18 2020, 08:10 AM , By : Jim
On KafkaProducer.send(message), I am getting "exception Error serializing Avro message"
On KafkaProducer.send(message), I am getting "exception Error serializing Avro message"
hope this fix your issue Like @cricket_007 said if you are on windows try to use docker.Below the link to a docker compose that will run kafka, zookeeper, schema registry and kafka rest, with that you can test your producer easily. https://github.com
TAG : java
Date : October 18 2020, 08:10 AM , By : user2174449
How to perform throttling based on user defined argument?
How to perform throttling based on user defined argument?
To fix the issue you can do As others have suggested (see the comments on the question), you have better options available to you than throttling here. However, you can throttle an operation in Java with some simple code like the following:
TAG : java
Date : October 18 2020, 08:10 AM , By : Sébastien Van Bruaen
ReadProcessMemory across module boundaries
ReadProcessMemory across module boundaries
This might help you It turns out, reading memory pages individually is how to do it e.g. like the following code:
TAG : java
Date : October 18 2020, 08:10 AM , By : user2174372
How do I create varied colors for buttons in Java GUI?
How do I create varied colors for buttons in Java GUI?
will help you The variables R, G, B, and subsequently color are assigned a random value once, before the loop for starts. Then, throughout the loop, they retain the same values, so you end up with the same color for all of your buttons.Try creating a
TAG : java
Date : October 18 2020, 08:10 AM , By : user2174335
Jackson LocalDate: one day off during serialization
Jackson LocalDate: one day off during serialization
I wish this help you Timezone issue As much Turns out, Spring retrieves the dates from the database and i guess it uses java.util.Date (which considers system's timezone) to parse it first and later convert it to java.time.LocalDate, using TimeZone.s
TAG : java
Date : October 18 2020, 08:10 AM , By : kevthom
Eclipse Milo: writing to an object member variable
Eclipse Milo: writing to an object member variable
may help you . It looks like this was fixed in this commit.
TAG : java
Date : October 17 2020, 08:10 PM , By : user2174571
JHipster/React - Get data from server anonymously (before login)
JHipster/React - Get data from server anonymously (before login)
Hope this helps You must configure authorized endpoints in gateway's application*.yml under jhipster.gateway.authorized-microservices-endpoints property. This is the source of configuration for AccessControlFilter. Don't forget to update it in regist
TAG : java
Date : October 17 2020, 08:10 PM , By : user2174514
Oauth 2.0 - Single resource server but multiple client applications
Oauth 2.0 - Single resource server but multiple client applications
wish helps you so if you have multiple client, you can register client detail in AuthorizationServer by extend AuthorizationServerConfigurerAdapterthe following is the example how you register client detail in memory:
TAG : java
Date : October 17 2020, 08:10 PM , By : pawingo
How to transfer an int via DatagramSocket
How to transfer an int via DatagramSocket
I wish this help you Use a ByteBuffer.
TAG : java
Date : October 17 2020, 08:10 AM , By : Charles Rose
How to make a layout for the equalizer?
How to make a layout for the equalizer?
wish of those help This is my code i use to setup a 5 band Equalizer, but i would like to have a Layout which supports the number of equalizer bands supported by the device. , You need to use Vertical SeekBar as told by Nilesh
TAG : java
Date : October 17 2020, 08:10 AM , By : sonam Gaikwad
JOOQ update set not populating values
JOOQ update set not populating values
To fix this issue You could use the Query.getSQL(ParamType) method to force jOOQ to inline all bind variables. But quite likely, you will be better off to use a prepared statement for performance reasons, in case of which you should both extract the
TAG : java
Date : October 17 2020, 08:10 AM , By : user2174796
Static variable being fed into JTextfield is only JTextfield that I am failing to update. Can't figure out why but I thi
Static variable being fed into JTextfield is only JTextfield that I am failing to update. Can't figure out why but I thi
Any of those help Just creating the JTextField object and assigning it to a variable does not place it into the GUI, and in fact I'd recommend against trying to create a GUI in this way. Note that this has nothing to do with the static money field an
TAG : java
Date : October 17 2020, 08:10 AM , By : Fyn
Why exclude commons-logging when using slf4j?
Why exclude commons-logging when using slf4j?
I hope this helps . JCL and SLF are both logging facades, i.e. they are just an API abstracting away the logging implementation.JUL (java.util.logging) and Logback are logging implementations. By default, JCL will call JUL, and SLF will call Logback.
TAG : java
Date : October 17 2020, 08:10 AM , By : user2174737
How to fix error "contractor can't be apply upload to given types"?
How to fix error "contractor can't be apply upload to given types"?
This might help you I will just work on compile errors since that's what the question is about and ignore how the code works but will try to make it as close to working.Okay right of the bat, The first error I see is missing constructor! You did not
TAG : java
Date : October 16 2020, 08:10 PM , By : user2175013
Eclipse 2018-09 with jdk11 claims that package org.junit is missing even though it is included by maven
Eclipse 2018-09 with jdk11 claims that package org.junit is missing even though it is included by maven
hope this fix your issue Right-click on the project, then use Maven>Update Project... to get the build path settings in sync with the pom.xml.
TAG : java
Date : October 16 2020, 08:10 PM , By : DisplayName=
java linked list iterator error, output is displayed wrong
java linked list iterator error, output is displayed wrong
Any of those help If you carefully look at your code and the way your linked list is populated, you would notice that (right after the population) the elements from 15 (first element) up to 1 are singly-linked while next elements from 16 up to 30 are
TAG : java
Date : October 16 2020, 08:10 PM , By : user2174986
How to replace forward slash with triple forward slash in Java?
How to replace forward slash with triple forward slash in Java?
around this issue Just use path.replaceAll("/", "///") without any backslashes. Forward slashes don't need escaping.
TAG : java
Date : October 16 2020, 08:10 PM , By : Tammy Ouderkirk Ledf
adding list to another Arraylist clears the output
adding list to another Arraylist clears the output
will be helpful for those in need I have a CSV file of neighboring regions. I have read the file with java and created 2D array of Strings. the data that I have looks something like this:
TAG : java
Date : October 16 2020, 08:10 PM , By : Mikhail Makarov
Java validation add constraint for only set of string values
Java validation add constraint for only set of string values
I hope this helps . Using java validation is it possible to add constrains for a string property like it should have only some set of values. (for ex : AA,BB,CC,DD). I know I can use something like below, but it does not stop some junk values apart f
TAG : java
Date : October 16 2020, 08:10 PM , By : user2174946
Java | Shift out of bounds index until it is in bounds
Java | Shift out of bounds index until it is in bounds
will help you Let's say that I have an array x. , You may use the modulus operator, e.g.:
TAG : java
Date : October 16 2020, 08:10 PM , By : Steve Gregory
Two versions of Talend giving different results
Two versions of Talend giving different results
this one helps. Problem resolved. The discrepancy was caused by the two versions of the Talend job not being identical. My colleague had edited part of the job prior to this tMap.
TAG : java
Date : October 16 2020, 08:10 PM , By : user2174916
Spring CGLIB proxies intercept only public method calls
Spring CGLIB proxies intercept only public method calls
wish of those help Possible Answer is Since Java-Based proxies cannot work with package-private methods (as Java implementation classes cannot assign weaker access privileges to interface-implemented methods).So this might stop spring team from opera
TAG : java
Date : October 16 2020, 08:10 PM , By : Atrab Ahmed
Could not find any matches for com.android.tools.build:gradle:2.3.+
Could not find any matches for com.android.tools.build:gradle:2.3.+
fixed the issue. Will look into that further Base on this link
TAG : java
Date : October 16 2020, 08:10 AM , By : user2175197
ClassCastException in JavaFX
ClassCastException in JavaFX
it helps some times The current code is brittle as it relies on the internal structure of the TreeCell. Also, TreeCellSkin1 and LabeledText are both internal classes. Internal code is subject to change without notice and without regards to third part
TAG : java
Date : October 16 2020, 08:10 AM , By : kimberley collins

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