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JAVA QUESTIONS

How to check if one of the edit text is empty
How to check if one of the edit text is empty
seems to work fine I have 2 edit texts how to check if one of the edit text is empty currently what I'm doing is
TAG : java
Date : November 09 2020, 03:01 PM , By : user71111
Impelement a generic parser class
Impelement a generic parser class
Hope that helps A method like Student.setName(String) requires two arguments, the Student instance to invoke the method on and the String to be passed. Therefore, an appropriate functional interface would be BiConsumer.By the way, the columns of an e
TAG : java
Date : November 09 2020, 03:01 PM , By : beejeebus
Priority Blocking Queue in Hazelcast
Priority Blocking Queue in Hazelcast
hop of those help? Does this https://github.com/hazelcast/hazelcast-code-samples/tree/master/spi/priority-queue do what you need ?It's a fully working example -- shows how Hazelcast can be extended to add the priority queue. Needs a little tweaking t
TAG : java
Date : November 09 2020, 03:01 PM , By : Guangyuan Xu
Base64 String to Json String
Base64 String to Json String
To fix this issue I currently need to send a PDF file through an API by converting it to a Base64 string. I have tested my code and realize that it cannot accept the contents in my pdfBase64String variable. , You can use Base64.encodeBase64String:
TAG : java
Date : November 09 2020, 03:01 PM , By : Alex Basurto
Java 8 SSL Handshake failure
Java 8 SSL Handshake failure
wish of those help The above error is due to Oracle bug 19030178. This SO link explains the steps in details.In ojdbc7 jar we had applied the patch for bug 19030178 and added the required -D parameters. With these changes, it worked properly.
TAG : java
Date : November 09 2020, 03:01 PM , By : satheish kumar
Android Unit Testing - method to test returning null
Android Unit Testing - method to test returning null
Hope this helps You can not test getDeviceName(), Build.MANUFACTURER and Build. MODEL will return null. Also manufacturer and model are from device, how your IDE can get it?BTW if you want to test Util class with static method, i suggest you to use P
TAG : java
Date : November 09 2020, 03:01 PM , By : Turab Jafri
Sort Linked List with Comparator
Sort Linked List with Comparator
fixed the issue. Will look into that further I have a question. Please take a look at my code below, when i want to sort data on linked list by using collections.sort and comparator will working after write (collections.sort (...)) and then use it ag
TAG : java
Date : November 09 2020, 03:01 PM , By : rajput
Not able to access dynamodb tables via DAX cluster
Not able to access dynamodb tables via DAX cluster
hop of those help? DAX doesn't recognize DynamoDB operations for managing tables, in your case "describeTable". Read and write operations are supported. See documentation for detailed APIs.
TAG : java
Date : November 09 2020, 03:01 PM , By : Mostho Johnson
When calling notifydatasetchanged(), the adapter displays the old list items too along with new items
When calling notifydatasetchanged(), the adapter displays the old list items too along with new items
I hope this helps . You can create a method to remove the old data with the new data in your Adapter:
TAG : java
Date : November 09 2020, 03:01 PM , By : Jovan Pacheco
Can a Kotlin data class equals() method be used without further modification in conjunction with JPA?
Can a Kotlin data class equals() method be used without further modification in conjunction with JPA?
help you fix your problem In my opinion, data classes in Kotlin should not be used unless you really understand what you are doing.Overriding equals/hashCode on mutable data can cause a problem. Consider you have added instance of a mutable class to
TAG : java
Date : November 08 2020, 03:01 PM , By : Jacek Kwaśniewski
Is the array empty?
Is the array empty?
this one helps. I guess the problem you are using the copy constructor. The issue makes the instance will have rank suit is 0. This makes toString work incorrectly
TAG : java
Date : November 08 2020, 03:01 PM , By : b33p
ID of the image remains same in all the devices that the app is installed
ID of the image remains same in all the devices that the app is installed
wish helps you R is the dynamically generated class, created during Android build process.R.Drawable.sample_img may vary, depending on build. Simple rebuild will change it.
TAG : java
Date : November 08 2020, 03:01 PM , By : thesuperpapagai
Data structure that has constant time for insertion, contains, remove and getting elements by index
Data structure that has constant time for insertion, contains, remove and getting elements by index
I think the issue was by ths following , I assume that requirement 3 means "find a person by some key" (e.g. its last name)?I have a strong feeling you can't have all those requirements in O(1), not even amortized time (such a thing would be well-kno
TAG : java
Date : November 08 2020, 03:01 PM , By : kevin
Sending Logback trace logs to Azure application insights - error: failed to send, bad request
Sending Logback trace logs to Azure application insights - error: failed to send, bad request
wish of those help One of the issues I can see here is that internal logger of AI is reporting unexpected character. I see that one of the possible issues is that there is some problem in the sanitization logic and that prevents the item to be sent t
TAG : java
Date : November 08 2020, 03:01 PM , By : Juan GB
How to get Kth largest element of a DoubleStream in java
How to get Kth largest element of a DoubleStream in java
To fix the issue you can do What's the best way of getting the Kth largest element in a DoubleStream in java?
TAG : java
Date : November 08 2020, 03:01 PM , By : crazy Gamer
Getting Failed to resolve error for retrofit 2.+ but working fine for version 1.9.0
Getting Failed to resolve error for retrofit 2.+ but working fine for version 1.9.0
it fixes the issue I am getting Failed to resolve Retrofit:2.+ but when i replace with 1.9.0, there is no error.Help me what need to be done.Also i am using Android studio 2.3.3 , You missed retrofit version 2 in link for retrofit2use
TAG : java
Date : November 08 2020, 03:01 PM , By : luciam
Can't print out Add two numbers in Java
Can't print out Add two numbers in Java
it helps some times The real problem is inside your AddTwoNumber method. You can't make node pointing to a new node, you should make its next pointing to a new node, before you move to next.
TAG : java
Date : November 08 2020, 03:01 PM , By : getiz
Check if setOnItemClickListener is selected
Check if setOnItemClickListener is selected
it fixes the issue Based on the code you've provided, this is likely happening because the default initialized value for positionID is set to 0. To fix this, you could initialize int positionID = -1 and then in your onClickDelete method, do a check t
TAG : java
Date : November 08 2020, 03:01 PM , By : Ravi Prakash
linked list manual entered by keyboard
linked list manual entered by keyboard
I wish this helpful for you To display the current node's position in the series, consider the following:
TAG : java
Date : November 08 2020, 03:01 PM , By : L Thomas
Is there a way to reset default imports of JShell?
Is there a way to reset default imports of JShell?
this will help The default imports from JShell are part of the startup scripts of the JShell. You can follow JShell documentation to find the option to avoid loading the startup scripts and can start jshell like this :
TAG : java
Date : November 08 2020, 03:01 PM , By : Geet Sawhney
Creating two-dimensional arrays using nested-loop
Creating two-dimensional arrays using nested-loop
fixed the issue. Will look into that further It loops through the 2 dimensional array. If i is equal to j, e.g ( 0,0 1,1 2,2 ) then it adds grade[i][j] with grade[j][i]. Since i and j are equal it adds the location with itself.When i is not equal to
TAG : java
Date : November 08 2020, 03:01 PM , By : FredrikWaaler
Springframework - property or field cannot be found on null
Springframework - property or field cannot be found on null
may help you . I figured out the issue. In the SecurityConfig.Java file I did not have the .loginPage pointing to the correct location which was creating the exception.
TAG : java
Date : November 08 2020, 03:01 PM , By : MXV
repeatWhen() does not complete
repeatWhen() does not complete
like below fixes the issue The initial subscriber would receive onCompleted() event if you change flatMap() to takeUntil() within your MyRetry class:
TAG : java
Date : November 08 2020, 03:01 PM , By : Dayne Wright
Java program keeps crashing
Java program keeps crashing
fixed the issue. Will look into that further keeps crashing when i run it, its a palindrom tester ( if a word is the same spelt forwards and backwards) and i want it to remove any non word characters and become lower case. Can anyone spot the problem
TAG : java
Date : November 07 2020, 03:01 PM , By : S.M. Manna
Spring Boot Application Throwing Startup Failed Error When Trying to Run
Spring Boot Application Throwing Startup Failed Error When Trying to Run
should help you out Answering my own question:I do not have a complete solution. I ran into the same problems that @Olantobi pointed out in the comments on my post. Firstly, I needed to add this to my main class Application.java to make it work with
TAG : java
Date : November 07 2020, 03:01 PM , By : Arun Jaganathan
How can I parse Twitter API dates into java.time.Instant?
How can I parse Twitter API dates into java.time.Instant?
wish helps you I am trying to parse the dates that come from the Twitter API into the new Instant class from Java 8. FYI, this is the format Wed Aug 09 17:11:53 +0000 2017. , Found the solution
TAG : java
Date : November 07 2020, 03:01 PM , By : pingwin craft
java.lang.SecurityException on search contact
java.lang.SecurityException on search contact
I think the issue was by ths following , requestPermissions() is asynchronous. When it returns, the user has not even been asked about permissions, let alone granted any to your app.You need to arrange to do your contact lookup at two points:
TAG : java
Date : November 07 2020, 03:01 PM , By : Victuracor
log4j grok with pipes fail
log4j grok with pipes fail
I wish this helpful for you i need to format a grok input for the next log format , Use this:
TAG : java
Date : November 07 2020, 03:01 PM , By : Sanjay yadav
Installing Java 7: "the path 'Temp;C:' contains an invalid character"
Installing Java 7: "the path 'Temp;C:' contains an invalid character"
will help you Your TEMP or TMP environment variable is likely bad. That's usually where installation programs find the path to the temp folder. Type command set in a command prompt to see your environment variables. – Andreas
TAG : java
Date : November 07 2020, 03:01 PM , By : Mohit Shrivastava
Repeatedly thrown ArrayIndexOutOfBoundsException stop producing stack traces
Repeatedly thrown ArrayIndexOutOfBoundsException stop producing stack traces
should help you out Nevermind, figured it out.Pass -XX:-OmitStackTraceInFastThrow as a command line option to the JVM to turn this behavior off. See also NullPointerException stack trace not available without debug agent
TAG : java
Date : November 07 2020, 03:01 PM , By : stephlei
java integer array size confusion
java integer array size confusion
To fix this issue Space for every element of the array is allocated on array creation.All elements are initialized to 0.
TAG : java
Date : November 07 2020, 03:01 PM , By : Sara Amini
Hooking into WELD-SE classpath scanner
Hooking into WELD-SE classpath scanner
I wish this helpful for you Weld doesn't have any such API. The scanner Weld uses is not "general-enough" for this. It is rather CDI-specific as it focuses on discovering bean archives.If the POJOs you are looking for are in fact CDI beans, you could
TAG : java
Date : November 07 2020, 03:01 PM , By : Giorgos Gkotsis
Parsing java long value to String in Kotlin
Parsing java long value to String in Kotlin
hop of those help? The kotlin.Long type
TAG : java
Date : November 06 2020, 03:01 PM , By : user2171748
Android context not getting mocked when testing
Android context not getting mocked when testing
around this issue I believe it is because you use the context in the initialization.try this
TAG : java
Date : November 06 2020, 03:01 PM , By : fingerskhan
BigDecimal with smart precision (scale)
BigDecimal with smart precision (scale)
I wish did fix the issue. Look At https://docs.oracle.com/javase/8/docs/api/java/math/BigDecimal.htmlstripTrailingZeros--
TAG : java
Date : November 06 2020, 03:01 PM , By : Tom Heisterkamp
ListView setAdapter on null object reference
ListView setAdapter on null object reference
wish of those help Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.ListView.setAdapter(android.widget.ListAdapter)' on a null object reference
TAG : java
Date : November 06 2020, 03:01 PM , By : Michal
How to make Libgdx particles not be affected by background color?
How to make Libgdx particles not be affected by background color?
it fixes the issue Simple, with the editor has an option called "aditive" that is well down, disable it and will have particles with alpha 1.
TAG : java
Date : November 06 2020, 03:01 PM , By : Marco Cagna
Javassist reports fields are null after being initialized in constructor
Javassist reports fields are null after being initialized in constructor
wish of those help The fields you mentioned aren't initialized in the constructor. If you look at the source code you linked and search for clnt_random for example, you'll find that it is only set in one place: the clientHello method. (clnt_random is
TAG : java
Date : November 06 2020, 03:01 PM , By : Sheffield Wang
<f:setPropertyActionListener it does not work with Dialog
<f:setPropertyActionListener it does not work with Dialog
I wish did fix the issue. You are generating the content of the dialog at the time the whole page is renedered. Thus, {carrucelController.selectCarrucel} is null, when the dialogs content is prepared. Your button now sets the property in the backing
TAG : java
Date : November 06 2020, 03:01 PM , By : Dubey Capital
Update a column in a existing sqlite database but nothing change in android
Update a column in a existing sqlite database but nothing change in android
will help you Solution I forgot to use the checkDatabase. In the constructor of DatabaseHelper must include:
TAG : java
Date : November 06 2020, 03:01 PM , By : Jack Knight
Convert Oracle NVl QUery to Criteria Query
Convert Oracle NVl QUery to Criteria Query
fixed the issue. Will look into that further is there any way to convert this Oracle Query to Criteria Query. , I Did this to make it work.
TAG : java
Date : November 05 2020, 03:01 PM , By : user2171741
invalid stream header: EFBFBDEF when converting object from byte string
invalid stream header: EFBFBDEF when converting object from byte string
I hope this helps you . String is not a container for binary data. You need to pass around the original byte array, or hex- or base64-encode it.Better still, serialize directly to the socket and get rid of this altogether.
TAG : java
Date : November 05 2020, 03:01 PM , By : Indira Amangeldinova
Generated RSA Public and Private key modulus are the same in Java/Android
Generated RSA Public and Private key modulus are the same in Java/Android
like below fixes the issue What you generate is a key pair for Java. The public and private keys of the key pair always share the same modulus: the calculations are performed within that domain.What is kept secure is not the modulus but the private e
TAG : java
Date : November 05 2020, 03:01 PM , By : Pallavi
Java deserialization of List of Objects
Java deserialization of List of Objects
it fixes the issue The stream header is the giveaway: 724F3041. This data was not produced by an ObjectOutputStream, so you can't read it with an ObjectInputStream.
TAG : java
Date : November 05 2020, 03:01 PM , By : Steve Cliff
Why can't I convert an XML string to a JAXB element?
Why can't I convert an XML string to a JAXB element?
I hope this helps . You declare the complexType in the xsd but you don't declare the element's usage. Add a with the correct namespaces before the xs:complexType so that the occurrence of the element is defined.
TAG : java
Date : November 05 2020, 03:01 PM , By : naltatis
New to coding and getters and setters are not working to a new class?
New to coding and getters and setters are not working to a new class?
I think the issue was by ths following , First of all, I might think you have copied the program from an external source, since there is lots of compilation errors. Anyways... try this this might work...import java.util.Scanner;
TAG : java
Date : November 05 2020, 03:01 PM , By : Cayabyab Rogelio
Java Processing ClassNotFound Exception
Java Processing ClassNotFound Exception
it should still fix some issue The link you posted includes the following sentence: NOTE: If your class is part of a package other than the default package, you must call PApplet's main using the package name as well, like this: PApplet.main("package
TAG : java
Date : November 05 2020, 03:01 PM , By : 아시바라
update vcap env from application
update vcap env from application
With these it helps I'm not sure exactly which information you're looking to change here, but values in environment variables like VCAP_SERVICES, VCAP_APPLICATION, PORT and anything starting with CF_ like CF_INSTANCE_PORT, CF_INSTANCE_PORTS and/or CF
TAG : java
Date : November 05 2020, 03:01 PM , By : Patil
Move 100 bytes from end of file to beginning of file with Java (RandomAccessFile is too slow)
Move 100 bytes from end of file to beginning of file with Java (RandomAccessFile is too slow)
Any of those help As already stated bytewise I/O operations drain performance.The approriate way would be:
TAG : java
Date : November 05 2020, 03:01 PM , By : Natalie
Log4j2.xml configuration file not parsing mapMessage properties
Log4j2.xml configuration file not parsing mapMessage properties
seems to work fine From log4j2 version 2.9, you have to use org.apache.logging.log4j.message.StringMapMessage instead of org.apache.logging.log4j.message.MapMessage for string only values.StringMapMessage is same as MapMessage before version 2.9 as p
TAG : java
Date : November 05 2020, 03:01 PM , By : Yorachim Nelis
How to generate .class files?
How to generate .class files?
this will help Classes are located in your app -> build -> intermediates -> classes -> ->
TAG : java
Date : November 05 2020, 03:01 PM , By : Aidan Nyamhanga
Axon 3 not found handler
Axon 3 not found handler
Any of those help hope I can help you with this :-)Taking you're running your application through Spring Boot and that you're using the axon-spring-boot-starter dependency to wire everything automatically, then I know what you're missing. The CreateB
TAG : java
Date : November 05 2020, 03:01 PM , By : George Madlis
Why do I get Gradle configure build error junit5 in IntelliJ?
Why do I get Gradle configure build error junit5 in IntelliJ?
This might help you The Junit dependency comes with "spring-boot-starter-test", it may not be available in your spring version. Try to change the spring version or use a latest version and give it a go.
TAG : java
Date : November 04 2020, 03:01 PM , By : Thomas Schwarze
How can I move a JFrame to specific Location more smoothly than "teleporting" it with setLocation()?
How can I move a JFrame to specific Location more smoothly than "teleporting" it with setLocation()?
around this issue Swing is single thread, you will need to move the for-loop off the main thread. Swing is also not thread safe, so any modifications to the state of the UI should be done within the context of the main (Event Dispatching) thread - ca
TAG : java
Date : November 04 2020, 03:01 PM , By : ro roger
Spring freezing if sending zero length header
Spring freezing if sending zero length header
I wish this helpful for you I found the problem. Spring is not freezing. I'm false using Jedis. JedisPool has 8 Jedis object in first. I'm trying to get Jedis from pool with this: pool.getResource().hget("something", "something") This returning Jedis
TAG : java
Date : November 04 2020, 03:01 PM , By : rgb
Dequeue an element from a specific index
Dequeue an element from a specific index
This might help you A queue is a queue because it has an enqueue and a dequeue method, which add and remove from opposite ends of the queue respectively. A queue is not guaranteed to provide other functionality.If you wanted to remove a specific elem
TAG : java
Date : November 04 2020, 03:01 PM , By : Chee Keong Pang
How do I get Mockito mocks to cause a failure when unexpected calls are made?
How do I get Mockito mocks to cause a failure when unexpected calls are made?
hop of those help? The most-idiomatic way of doing this is with verifyNoMoreInteractions, as in Mockito docs 8:
TAG : java
Date : November 04 2020, 03:01 PM , By : Dave Bokil
Cannot see variables while debugging flash on eclipse
Cannot see variables while debugging flash on eclipse
this one helps. Revert my browser and flash to the older version finally fixed the problem. all.
TAG : java
Date : November 04 2020, 03:01 PM , By : user7450789
Why is Java Runtime.exec command working but ProcessBuilder not able to execute the Perforce client command?
Why is Java Runtime.exec command working but ProcessBuilder not able to execute the Perforce client command?
Any of those help ProcessBuilder wants you to provide the command name and each argument as separate strings. When you (indirectly) perform
TAG : java
Date : November 04 2020, 03:01 PM , By : Ala
Canvas & graphics context - how to change the shape of the brush
Canvas & graphics context - how to change the shape of the brush
Does that help When I have a GraphicsContext object and am using it to draw on a canvas using: , You can change the shape of the end of a line with
TAG : java
Date : November 04 2020, 03:01 PM , By : Netherstorm

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