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JAVA QUESTIONS

Query id return type
Query id return type
wish help you to fix your issue I think the issue is with ContractRepository.findContractsIdForInvoicesCreation();I think it doesn't return List as you expected
TAG : java
Date : November 25 2020, 03:01 PM , By : Максим Зонарис
Pass variable in API url in java .
Pass variable in API url in java .
it fixes the issue Use String concatenation (with the + operator) to combine String literals and variables:
TAG : java
Date : November 25 2020, 03:01 PM , By : Bryan Jakarta
Reading semicolon delimited csv
Reading semicolon delimited csv
I wish this help you Use the overloaded version with separator of OpenCSV
TAG : java
Date : November 25 2020, 03:01 PM , By : Gunjan Agarwala
Get the workspace root
Get the workspace root
Any of those help I am developing an eclipse plugin and I am trying to get the workspace root in order to acces later a file from the workspace and read something from it. , You get the IFile for a path in the workspace using:
TAG : java
Date : November 25 2020, 03:01 PM , By : SEO POLY
Native mmap error
Native mmap error
wish helps you This happens when the OS says there is virtual memory available when later this memory cannot be allocated. I would make sure you have plenty of swap space and your JVM (which is much more than just your heap size) is small enough to c
TAG : java
Date : November 25 2020, 03:01 PM , By : 周建刚
hashmap and multiple txt files java
hashmap and multiple txt files java
it helps some times You are calling engJapDictionary.put(parts[0], parts2[0]); for the first word of the first file with all the words of the second file. Then, you don't put any other words of the first file in the Map, since you finished iterating
TAG : java
Date : November 25 2020, 03:01 PM , By : HTT
Kotlin: Access nested enum class from java
Kotlin: Access nested enum class from java
wish helps you No there's no problem, just do MyStatus s = new MyStatus(MyStatus.Status.ERROR);Here's what the compiler generates for your Enum:
TAG : java
Date : November 25 2020, 03:01 PM , By : ravitejavarma
Google RateLimiter not Working for counter
Google RateLimiter not Working for counter
may help you . The RateLimiter is working ok. The problem is that your output is buffered, because you are not flushing it each time. Usually, standard output is line-buffered. So if you had written
TAG : java
Date : November 25 2020, 03:01 PM , By : Nasir Malik
Spring Boot Application Hanging When Running on Command Line
Spring Boot Application Hanging When Running on Command Line
I wish this helpful for you I have a Spring Boot app that can not be run with a .yml config file.Below is the command that I run: , Finally resolved it.So here is the story:
TAG : java
Date : November 25 2020, 03:01 PM , By : sirimanelly
large amount of if else refactor
large amount of if else refactor
seems to work fine If you don't want to go down the CoR path, I'd suggest using switch statements. It'll help make your code more readable while not changing the logic. So it would look something like this: (this is just pseudocode obviously)
TAG : java
Date : November 25 2020, 03:01 PM , By : user7456173
Unable to add xmlunit as dependancy in my pom
Unable to add xmlunit as dependancy in my pom
I hope this helps . The artifact is available in MavenCentral, so if you cannot download it, you most probably have some kind of network issue that prevents your Maven to connect to the url of MavenCentral. This could be a proxy (often inside larger
TAG : java
Date : November 25 2020, 03:01 PM , By : Chickengwings
Scanner input needed twice, when only wanted once
Scanner input needed twice, when only wanted once
I wish this help you You are not using the array int[] temperatures so you could remove the statement that insert in it...If you really want to keep the value in an array. Simply use a Double[] temperatures then read your scanner.
TAG : java
Date : November 25 2020, 03:01 PM , By : dasdsadsa
How to interpret and translate kotlin code to java?
How to interpret and translate kotlin code to java?
it helps some times The method setViewPagerScroller uses kotlin anonymous inner class syntax. That is the 'object' part which has no real counterpart in java syntax.
TAG : java
Date : November 25 2020, 03:01 PM , By : Kevin Naidoo
Firebase authentication: signInWithEmailAndPassword method dont respond at all
Firebase authentication: signInWithEmailAndPassword method dont respond at all
Hope this helps I am getting problem in authentication in firebase through android app. everything is fine with code and connections. But I still don't get authenticated. I have done all the requisites like , Change your code like this.
TAG : java
Date : November 25 2020, 03:01 PM , By : user146014
How Remove Recycler Separator/divider programmatically or using xml property
How Remove Recycler Separator/divider programmatically or using xml property
I wish this helpful for you Below line making trouble. Because you are adding decoration to your item. This will add divider to your view. Just comment out below line.
TAG : java
Date : November 24 2020, 03:01 PM , By : Sankalp Mehta
Not Able to Save Data Hibernate
Not Able to Save Data Hibernate
this one helps. First, I guess many employees belong to the same department, so it should be a ManyToOne. Second, you can use JoinColumn to specify the name of the ... join column:
TAG : java
Date : November 24 2020, 03:01 PM , By : Vikas
Toolbar addView not working
Toolbar addView not working
will help you The easiest way to do this is by taking the whole layout item_toolbar_main and set it in a Toolbar directly in xml without using any Java code. So change the Toolbar view in your layout activity_main.xml to something like this:
TAG : java
Date : November 24 2020, 03:01 PM , By : Yogesh Kumar
Freeing memory wrapped with NewDirectByteBuffer
Freeing memory wrapped with NewDirectByteBuffer
it should still fix some issue You use JNI.newDirectByteBuffer, you can and you should free the memory manually, and do you clean up work at the same time. If you want it clean up automatically, what you need is monitor the object's life cycle. And i
TAG : java
Date : November 24 2020, 03:01 PM , By : Pratyush Kumar
Synchronization with implicitwait() do not work, why?
Synchronization with implicitwait() do not work, why?
I wish this help you I'm trying synchronization with selenium webdriver and something is not working with implicitlyWait(). , You have to wait that your element is clickable. Try adding this:
TAG : java
Date : November 24 2020, 03:01 PM , By : Pratyay Ghosh
Wrapper around Java primitive types
Wrapper around Java primitive types
help you fix your problem Why always data needs to be converted into bytes for serialization/de-serialization?The objective of serialization is to send data to somewhere outside your software (your hard drive or other software somewhere). Those proce
TAG : java
Date : November 24 2020, 03:01 PM , By : JHan
ClassNotFoundException: spark.Request when running from command line
ClassNotFoundException: spark.Request when running from command line
To fix the issue you can do Was following tutorial here: http://sparkjava.com/ , Leave the quotes around the class path away:
TAG : java
Date : November 24 2020, 03:01 PM , By : Tank
Exception in Hibernate Configuration
Exception in Hibernate Configuration
Hope this helps I believe the error lies in this line:jdbc:oracle:thin:@localhost:1521:test. I think it should be jdbc:oracle:thin:@localhost:1521/test
TAG : java
Date : November 24 2020, 03:01 PM , By : Hossam Mohammed
How can I validate XML embedded in JSON using Citrus framework?
How can I validate XML embedded in JSON using Citrus framework?
Hope that helps In my Citrus test, I’m trying to validate an XML message that is embedded in a JSON document (the output of WireMock). The XML text needs to be parsed because it contains timestamps I want to ignore. The XML part of the JSON message l
TAG : java
Date : November 24 2020, 03:01 PM , By : Fogro
How is the String value passed to the updateText() method?
How is the String value passed to the updateText() method?
Any of those help Tinkering with RxJava for the first time, I have created an Rx chain to listen to a change in state of String object : , This is simply lambda expression
TAG : java
Date : November 24 2020, 03:01 PM , By : patel Krupen
Memory efficient replace functions
Memory efficient replace functions
it helps some times This answer is addressing the issue when working with a general string. There are better solutions if you're working with HTML.
TAG : java
Date : November 24 2020, 03:01 PM , By : Kulwinder Kohli
Upload Photo with onActivityResult, but without Fullscreen capturing
Upload Photo with onActivityResult, but without Fullscreen capturing
like below fixes the issue Is it possible to take picture and upload it to server by using onActivityResult, but not by using Fullscreen camera? I just want to use TextureView or SurfaceView for Camera preview and for taking Photo. , It is impossible
TAG : java
Date : November 24 2020, 03:01 PM , By : Mangaiyarkarasi.M
Docker: Java 8 installation failing on Ubuntu
Docker: Java 8 installation failing on Ubuntu
this one helps. As of this morning, the Webupd8 Oracle-java8-installer is successfully downloading and installing in docker for me. The links in the PPA installer must have been updated. Yay!My Dockerfile that was failing at the end of last week but
TAG : java
Date : November 24 2020, 03:01 PM , By : Emre_D
Java Netbeans Calculator performing wrong calculation
Java Netbeans Calculator performing wrong calculation
like below fixes the issue I think the problems are the values of accum2 and accum2 before calculating the result. So can you check their values by using System.out.println(" accum 1 "+ accum1) and System.out.println(" accum 2 "+ accum2) before perfo
TAG : java
Date : November 24 2020, 03:01 PM , By : spandan s
Nifi: Threads in nifi
Nifi: Threads in nifi
I think the issue was by ths following , I want to know how threads work in nifi i mean one processor has one thread or they are in one main thread?
TAG : java
Date : November 24 2020, 03:01 PM , By : Yue Sun
While loop Int return inside the method completely dead
While loop Int return inside the method completely dead
I think the issue was by ths following , Based on your description, I changed some of your code and added another system to check continue or exit. This works:
TAG : java
Date : November 24 2020, 03:01 PM , By : daniel kim
Checking if a user's entry is an integer using try catch statements
Checking if a user's entry is an integer using try catch statements
should help you out I assume your code isn't working?The way I'd do it is to create a Boolean method and return true or false
TAG : java
Date : November 24 2020, 03:01 PM , By : BrejAmki
Forcing a subclass to provide an initialization method
Forcing a subclass to provide an initialization method
wish help you to fix your issue The primary problem with this approach is that even though the subclass is required to implement the initPeople method, there is nothing forcing the subclass to call it in the constructor. A better approach would be to
TAG : java
Date : November 24 2020, 03:01 PM , By : Tariqul Islam
calling a fuction and variables from another class in java
calling a fuction and variables from another class in java
fixed the issue. Will look into that further This is when you need a parameter.One of the cases where you need a parameter is when your method needs some information that it can't get for itself (in this case, userin), so the caller (main) has to giv
TAG : java
Date : November 23 2020, 03:01 PM , By : brianlee99
which versions of ssl and tls can we use for java 1.2
which versions of ssl and tls can we use for java 1.2
like below fixes the issue The Secure Sockets Layer (SSL) and Transport Layer Security (TLS) protocols is integrated from java 1.4. I would like to know which SSL/TLS versions can be used with java 1.2. , Which versions of ssl and tls can we use for
TAG : java
Date : November 23 2020, 03:01 PM , By : Noaman Ilyas
In spring-boot, is it possible to get properties without being a spring bean?
In spring-boot, is it possible to get properties without being a spring bean?
I wish this helpful for you No and yes. No is because that's the whole idea of Spring and dependency injection. You have to use something which will have access to Spring ApplicationContext.
TAG : java
Date : November 23 2020, 03:01 PM , By : Gabriel
Java - Thread.join( ) does not release the lock
Java - Thread.join( ) does not release the lock
it helps some times That's because Thread.join() doesn't release any locks. You've designed a perfectly working deadlock, where Thread-1 is waiting for Thread-2 to die having locked on Foo, and Thread-2 is waiting to lock on Foo.(Technically speaking
TAG : java
Date : November 23 2020, 03:01 PM , By : Alexander Okunev
It reads the file but it is not printing it properly when it sends it to a new file?
It reads the file but it is not printing it properly when it sends it to a new file?
I think the issue was by ths following , I've been having a problem when it comes to printing the read file to a new file. So here's the example data from the finance file: , The printf line is wrong. Please use the following line instead.
TAG : java
Date : November 23 2020, 03:01 PM , By : Dongxue Wu
Date picker Not Working on API 26
Date picker Not Working on API 26
Any of those help use System.currentTimeMillis()for Max date this will return current date in Milli Seconds . and for min use Calender.! If you want your app to work Completely fine on each Android Version follow my Example Code .! Date Picker Exampl
TAG : java
Date : November 23 2020, 03:01 PM , By : deathcount248
When does JPA persistence context end?
When does JPA persistence context end?
I wish this help you A persistence context ends when EntityManager.close() is called. Here's an example.Another example taken from the link provided in the question:
TAG : java
Date : November 23 2020, 03:01 PM , By : Kaivalya Ram
How to make Circle with Four Color in Java
How to make Circle with Four Color in Java
Hope this helps You can use java.awt.geom.Arc2D to draw slices of the Circle see below code ,
TAG : java
Date : November 23 2020, 03:01 PM , By : ppatel
java. inheritance/polymorphism, quiz error?
java. inheritance/polymorphism, quiz error?
This might help you Here what's happening is when you call Base b = new Derived() it first calls Derived() on derived class. Now as Derived class extends Base class every constructor of Derived class internally calls the default cunstructor of base c
TAG : java
Date : November 23 2020, 03:01 PM , By : Andrew Seepes
Exception in thread "main" java.lang.NoSuchMethodError: com.google.common.io.Files.newReaderSupplier(Ljava/io/
Exception in thread "main" java.lang.NoSuchMethodError: com.google.common.io.Files.newReaderSupplier(Ljava/io/
I hope this helps . The issue was with Weblogic 12c which adds Guava 17.0 jar internally.So it ignores the Guava jar in the maven pom.xml .To solved this issue add weblogic.xml in the application/war and mention the packages that needs to be excluded
TAG : java
Date : November 23 2020, 03:01 PM , By : Dhananjay
How to convert a cURL call into a Java URLConnection call
How to convert a cURL call into a Java URLConnection call
wish helps you There are multiple ways to do it. Firstly, since you want to send a JSON object, you might want to use a JSON library, for example, Google's gson. But to make it easy you can just send the request as a String. Here is a sample code tha
TAG : java
Date : November 23 2020, 03:01 PM , By : Patrick Howell ONeil
Creating Substrings in a while loop
Creating Substrings in a while loop
hop of those help? I am trying to create a method that substrings a string from the occurrence from one word(labelA) to another(labelB) and vice versa. , String.split(String) will I believe do the trick:
TAG : java
Date : November 23 2020, 03:01 PM , By : Leosin
Java DateTimeFormatterBuilder with Verbose Time Zone
Java DateTimeFormatterBuilder with Verbose Time Zone
this one helps. Pseudo zones As the class documentation explains briefly, the 3-4 letters commonly seen in mainstream media to indicate a time zone are not actually official time zones. These pseudo-zones are not standardized, and are not even unique
TAG : java
Date : November 23 2020, 03:01 PM , By : black nightz
Memory leak using Stringbuilder in java
Memory leak using Stringbuilder in java
will help you The best way is to enable verbose GC logs, and then track the timings at which full GC is triggered which basically covers the GC for young, survivor and tenured generation (your string builder object might be held up in any of these ar
TAG : java
Date : November 23 2020, 03:01 PM , By : Aldrin B.
java string with English and Chinese text
java string with English and Chinese text
seems to work fine it runs well when I try your code~ but it return -1 means it doesn't have the symbol in the string ,please check again . you can transform the symbol to int and compared!
TAG : java
Date : November 23 2020, 03:01 PM , By : Michael W
How do I cast an array of doubles into an array of integers in Java?
How do I cast an array of doubles into an array of integers in Java?
wish help you to fix your issue You're close, you need to create a new array of int(s) and assign the result of your Math.ceil calls (with an appropriate cast). Like,
TAG : java
Date : November 22 2020, 03:01 PM , By : Isaac
Pair a bluetooth device in Android Studio
Pair a bluetooth device in Android Studio
like below fixes the issue First request BLUETOOTH_ADMIN permission.Then make your device discoverable:
TAG : java
Date : November 22 2020, 03:01 PM , By : Quan Nguyen
expected android.widget.textview but found java.lang.string
expected android.widget.textview but found java.lang.string
it helps some times this is a project to shcool and im quiet new to this progamming world and i was trying to put some information into the textviews but this error don t let me "expected android.widget.textview but found java.lang.string" i dont kno
TAG : java
Date : November 22 2020, 03:01 PM , By : JackPanda8
How to sort out by index(0) alphabelically or index(2) of the List<String> in the ArrayList<List<String>&
How to sort out by index(0) alphabelically or index(2) of the List<String> in the ArrayList<List<String>&
With these it helps Both requested sorts could be implemented using Collections.sort(List, Comparator) where a different Comparator would be required for each sought sort.Specifically, Collections.sort(sortItem, Comparator.comparing(list -> list.get(
TAG : java
Date : November 22 2020, 03:01 PM , By : Rest
Creating a Drop Down Menu Bar in Java GUI
Creating a Drop Down Menu Bar in Java GUI
To fix this issue There is no any need of adding JMenuBar object to JPanel because it is only linked with the JFrame. You need to pass the JMenuBar object to JFrame method setJMenuBar() in order to set the menu bar in the window.
TAG : java
Date : November 22 2020, 03:01 PM , By : hoangph
Java Regular expression - Pattern matching on a pipe-delimited string
Java Regular expression - Pattern matching on a pipe-delimited string
Hope that helps I believe you mean to use + to indicate one or more of where you're using ? to indicate 0 or 1 of.
TAG : java
Date : November 22 2020, 03:01 PM , By : Fãřñã Đõ
How can i use blob storage from an azure function in Java
How can i use blob storage from an azure function in Java
wish helps you According to your needs,I suggest you following this official tutorial to create,run and deploy your java azure function.Function Class:
TAG : java
Date : November 22 2020, 03:01 PM , By : Haohao Lou
sorting numbers from a .txt doc into different category with if statements and loops
sorting numbers from a .txt doc into different category with if statements and loops
fixed the issue. Will look into that further You need to use the AND () operator instead of the OR (||) operator within the conditions for your IF statements, for example:
TAG : java
Date : November 22 2020, 03:01 PM , By : m0rshgi
Creating a Search Button (Double cannot converted to String)
Creating a Search Button (Double cannot converted to String)
it fixes the issue Does the textID.getText() actually is a parseable double string? For instance "10.1" do but "10.1 " no.Always I did this kind of conversion I use trim() to remove this extra white spaces as follow:
TAG : java
Date : November 22 2020, 03:01 PM , By : 王丹阳
Spring Initializr Basic Project Won't Build
Spring Initializr Basic Project Won't Build
it helps some times I am using the SPRING INITIALIZR with these settings: , I recreated your configuration with
TAG : java
Date : November 22 2020, 03:01 PM , By : Tafoora Pointcom Taf
OpenCV error JAVA NETBEANS
OpenCV error JAVA NETBEANS
Hope that helps i get this error after running my project with javacv library. , You can use this below way:
TAG : java
Date : November 22 2020, 03:01 PM , By : MatthewLi
How can I correctly map my classes (getting mappedBy reference an unknown target entity property)
How can I correctly map my classes (getting mappedBy reference an unknown target entity property)
I wish this help you Turns out that what I am trying to do is not possible and the Hibernate developers do not consider it a bug/issue. See https://hibernate.atlassian.net/browse/HHH-7635 for details.
TAG : java
Date : November 22 2020, 03:01 PM , By : B_Keene
RIght click JPopupMenu on JTabbedPane
RIght click JPopupMenu on JTabbedPane
may help you . I have a JTabbedPane with a custom tab component. I want to be able to right click anywhere on the tab and show a JPopupMenu. The problem I'm having is that there is dead space on each tab where the JPopupMenu does not appear with a ri
TAG : java
Date : November 22 2020, 03:01 PM , By : Victor Aratangy

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