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JAVA QUESTIONS

Why SpEL support doesn't work in Spring Data JPA @Query?
Why SpEL support doesn't work in Spring Data JPA @Query?
I wish this helpful for you The answer is simple: arbitrary expressions are not implemented/supported.Please check carefully on Spring Data JPA documentaiton regarding Using SpEL expressions
TAG : java
Date : November 17 2020, 03:01 PM , By : Juan Liang
Java Timer.Schedule (infiniti loop) stop running
Java Timer.Schedule (infiniti loop) stop running
hope this fix your issue So you want code to run for x minutes, correct?If so, convert the time you want the code to run for into milliseconds like this : 1 minute = 60000 ms. There is a method called System.currentTimeMillis(), this will return a va
TAG : java
Date : November 17 2020, 03:01 PM , By : Natasha Wilson
Apache POI unable to detect hash formatted number
Apache POI unable to detect hash formatted number
will help you The problem is multidimensional.At first, the number format 60 cannot be applied usig Java. It leads to java.lang.IllegalArgumentException: Malformed pattern "60" using DecimalFormat.
TAG : java
Date : November 17 2020, 03:01 PM , By : Hari Krish
How to display images in this code
How to display images in this code
wish of those help Im trying to display two images in this code nature2 and nature4 which need to be displayed in one Fragment dynamically - first image nature2 together with text "Fragment" and after swipe nature4 with text "Fragment2". , Try this:
TAG : java
Date : November 17 2020, 03:01 PM , By : JDoe34
real usage of SPI explanation(JDBC for example)?
real usage of SPI explanation(JDBC for example)?
To fix this issue A services definition allows for dynamic discovery of implementations of an interface (or class). As an example, in JDBC, the services mechanism is used by java.sql.DriverManager to find and load implementations of java.sql.Driver.S
TAG : java
Date : November 17 2020, 03:01 PM , By : Wilson Daniel Ospina
OnItemSelected Won't call when Spinner is getting arraylist from Firebase
OnItemSelected Won't call when Spinner is getting arraylist from Firebase
like below fixes the issue Eventually I have found an answer myself. Firebase functions works a-synchronically. I haven't found a way to change that - manipulate it somehow. The answer of working with data that is received from a firebase function is
TAG : java
Date : November 17 2020, 03:01 PM , By : MOHAMMAD ZOBAIR
BigQueryIO.Write Serialization of withJsonSchema
BigQueryIO.Write Serialization of withJsonSchema
I wish did fix the issue. Looking at the code that throws the exception, it appears that this is a JSON parsing failure - your JSON schema is most likely malformed. According to the documentation, it should look something like this:
TAG : java
Date : November 17 2020, 03:01 PM , By : tushar rajput
can attackers inject sql or javascripts into java POJOs?
can attackers inject sql or javascripts into java POJOs?
Hope that helps Clean usage of hibernate, say without doing ugly things, is safe. So no SQL injection.However if the HTML form input is not guarded against JavaScript, you might get JS in a text in the database.
TAG : java
Date : November 17 2020, 03:01 PM , By : Dedicator
I have been trying to create a code to find the Perimeter, Area, Semi-Perimeter etc. But I am stuck on getting the angle
I have been trying to create a code to find the Perimeter, Area, Semi-Perimeter etc. But I am stuck on getting the angle
may help you . Nevermind; I realized after hours of pondering that the error. It was careless use of brackets.The code that worked was...
TAG : java
Date : November 17 2020, 03:01 PM , By : Ivan Petrovic
GridLayout ButtonPanel not Displaying Rows/Columns specified
GridLayout ButtonPanel not Displaying Rows/Columns specified
hope this fix your issue So this code specifically says that there should be three rows and one column for JPanel selectPanel, however, when I run it I get this result and just can't figure out what I'm doing wrong. Most of this code is not relevant
TAG : java
Date : November 17 2020, 03:01 PM , By : Saoe Borey
How can I allow programmable key inputs in Processing?
How can I allow programmable key inputs in Processing?
it should still fix some issue I would just use if statements. Sometimes the dumbest code is the best. It's the easiest to understand, and once it's written you can put it in a function somewhere and not really look at it very much.But if you really
TAG : java
Date : November 17 2020, 03:01 PM , By : 黃富彬
Docker install Java 8 link 404 not found
Docker install Java 8 link 404 not found
To fix the issue you can do FYI- 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!
TAG : java
Date : November 17 2020, 03:01 PM , By : Sumit Kumar Saha
How to compile&run another PDE file in Processing
How to compile&run another PDE file in Processing
I think the issue was by ths following , Ok, I came back to post my solution here.Because you can actually compile run PDE file from the command line tool after you have installed "Processing-java", so you can absolutely run another PDE. This 1 line
TAG : java
Date : November 16 2020, 03:01 PM , By : A. Dar
converting mysql query into spring JPA query
converting mysql query into spring JPA query
Any of those help I have the following mysql query that I want to convert to SPring JPA. , With Spring Data you could use a query like :
TAG : java
Date : November 16 2020, 03:01 PM , By : Nicolr3
Demeter Law - Calling a method of a class inside another method of a different class
Demeter Law - Calling a method of a class inside another method of a different class
seems to work fine This call does not violate Demeter's law. To violate it you will need to do this:
TAG : java
Date : November 16 2020, 03:01 PM , By : Abood Alkaragoly
Is it a bad idea to store data in a custom checked exception?
Is it a bad idea to store data in a custom checked exception?
will help you This is an established pattern.For example, Spring's RestTemplate's HTTP request methods may throw a RestClientResponseException which has methods like byte[] getResponseBodyAsByteArray(), String getResponseBodyAsString(), HttpHeaders g
TAG : java
Date : November 16 2020, 03:01 PM , By : Banne
Self-encrypting application to avoid disasembling on non rooted android devices
Self-encrypting application to avoid disasembling on non rooted android devices
it fixes the issue You shouldn't try to self-encrypt your app, it will add a lot of complexity for not so many protection.In fact, hacker just have to reverse your decryption routine or to dump memory once the app is running.
TAG : java
Date : November 16 2020, 03:01 PM , By : Poyoncio
Retrieving row data from SQLite Db based on Unique Identifier
Retrieving row data from SQLite Db based on Unique Identifier
Any of those help I have implemented an SQLite DB into my app and i am trying to write functions that will retrieve the data in a row associated with the unique identifier. I have tried a lot of stackoverflow answers and none seem to be working in my
TAG : java
Date : November 16 2020, 03:01 PM , By : Maier Kurpé Erik
Are query parameters allowed in opaque URIs?
Are query parameters allowed in opaque URIs?
will help you Java's URI class is documented as conforming to RFC 2396 and RFC 2732:
TAG : java
Date : November 16 2020, 03:01 PM , By : MOHAN T
converting a int char into int without changing the value in java
converting a int char into int without changing the value in java
will be helpful for those in need You have different calculations for different ranges. Since it's only a few, this syntax is clear.
TAG : java
Date : November 16 2020, 03:01 PM , By : The Bollywood Calend
Unable to build release apk
Unable to build release apk
I hope this helps you . Found the solution posting here if someone like me who is struggling to get it worked.Add this to your proguard.pro file
TAG : java
Date : November 16 2020, 03:01 PM , By : Shahaf Ashash
Netbean java gui
Netbean java gui
I think the issue was by ths following , I am new to JFrame and I am having problems with the layout in NetBean, how to solve this layout problem? I tried to resize, but the position of the elements will become mess. I am trying to display each detai
TAG : java
Date : November 16 2020, 03:01 PM , By : Jacob Rodell
Finding a substring of A string using only methods length, charAt and substring()
Finding a substring of A string using only methods length, charAt and substring()
To fix the issue you can do I have a task in which two strings are stored in separate variables and I will have to check if string1 is a substring of string2? Only problem is that I can only use the length(), charAt() and substring() methods. , Try t
TAG : java
Date : November 16 2020, 03:01 PM , By : Civil and Safety Eng
Why is only the first shadow that I render at the correct position?
Why is only the first shadow that I render at the correct position?
will help you It seems to be an bug in the driver, because it doesn't happen when I run the program with my NVIDIA GPU.A Workaround for the problem:
TAG : java
Date : November 16 2020, 03:01 PM , By : Tini John
How to allow a gradle plugin to access classes in project dependencies
How to allow a gradle plugin to access classes in project dependencies
will help you If anyone cares, I ended up getting the project classpath by inspecting the outputs of the compilejava tasks.
TAG : java
Date : November 16 2020, 03:01 PM , By : Mark Alston
JOOQ fetchLazy into POJO
JOOQ fetchLazy into POJO
I wish this helpful for you So I'd like to fetch some records lazyly into POJOs using DSLContext like so: , This could be done using jOOQ API only as follows:
TAG : java
Date : November 16 2020, 03:01 PM , By : Rajkamal
Logback custom layout with complex attributes
Logback custom layout with complex attributes
wish of those help In order for Logback to populate a complex, collection type on a custom object in its domain the following must hold true: Logback must be able to discover the complex object using a simple XML element name -> class name mapping Th
TAG : java
Date : November 16 2020, 03:01 PM , By : Johnson40jay
SQL performance on PreparedStatement vs keeping an open connection
SQL performance on PreparedStatement vs keeping an open connection
this will help You are executing each query separately. This hits the database for each insert statement.Instead you should use addBatch() method of Statement, instead of directly executing the query one after another like above and after adding all
TAG : java
Date : November 16 2020, 03:01 PM , By : Ron Kan
"download-maven-plugin" - multiple files to download & relocation of output dir
"download-maven-plugin" - multiple files to download & relocation of output dir
hop of those help? I solved that problem already, just by adding one more ... task. That was the whole magic.
TAG : java
Date : November 16 2020, 03:01 PM , By : Ольга Князева
Testing the forward and rewind in android emulator
Testing the forward and rewind in android emulator
I wish this help you In the context menu, if you select 'Directional pad', there is a play/pause, rewind, and fast forward button.
TAG : java
Date : November 16 2020, 03:01 PM , By : Nico
An unknow login page show up
An unknow login page show up
Does that help in the SecurityConfig you might have the /hbs mapping with authorisation required. in this example from https://www.baeldung.com/spring-security-login
TAG : java
Date : November 15 2020, 03:01 PM , By : user2171819
No logs in Android 8.0.0 TV emulator
No logs in Android 8.0.0 TV emulator
this one helps. Alright! I had some issues with the Oreo image been used in the emulator. I just deleted the emulator/s and again downloaded it and voila!
TAG : java
Date : November 15 2020, 03:01 PM , By : Bastiaans
Adding a class to the class path with a Java Agent
Adding a class to the class path with a Java Agent
Any of those help Your Agent’s jar file is already added to the class path, as specified by the java.lang.instrument package documentation:
TAG : java
Date : November 15 2020, 03:01 PM , By : Eylas
Removing nodes without a particular subnode in a tree structure
Removing nodes without a particular subnode in a tree structure
Hope that helps Straight interpretation of your conditions A. remove if subProjects and documents are empty or B. all children have no documents (assuming "none of his subprojects have documents" means all children, not just direct children)Defining
TAG : java
Date : November 15 2020, 03:01 PM , By : Anıl Kul
Where does gradle save dependencies' jars?
Where does gradle save dependencies' jars?
Hope that helps Open your Android Studio Project Explorer, expand External Libraries sections. Right click and Show in Files/Explorer
TAG : java
Date : November 15 2020, 03:01 PM , By : Westly Durkee
How do I make Java display a display a quotient and a remainder?
How do I make Java display a display a quotient and a remainder?
I hope this helps . Simple: you are using the wrong types then.It seems that you want to operate on whole numbers.
TAG : java
Date : November 15 2020, 03:01 PM , By : Marcin
Java: Telling whether a byte array is a zip file
Java: Telling whether a byte array is a zip file
wish of those help Files are typically identified using magic numbers in the beginning of the file. To make an educated guess about a given file Java has built-in method of detecting some file types: Files.probeContentType. Plus, there are various th
TAG : java
Date : November 15 2020, 03:01 PM , By : Maverick
Maven build and maven-failsafe-plugin - The forked VM terminated without properly saying goodbye
Maven build and maven-failsafe-plugin - The forked VM terminated without properly saying goodbye
I wish this help you I have the same problem and found three solutions which working for me:Problem description
TAG : java
Date : November 15 2020, 03:01 PM , By : Adam
Mockito verifies wrong overloaded method
Mockito verifies wrong overloaded method
wish of those help You're trying to set expectations on a final method.
TAG : java
Date : November 15 2020, 03:01 PM , By : Ivan
How to make a PDF of multiple pages with iText Java
How to make a PDF of multiple pages with iText Java
wish help you to fix your issue I have a list with fruits, I'm trying to put a fruit of the list with it's data into a JPanel by using a for loop. I want to fill the screen with JPanels of 4 by 2 (total 8) into one page. See result on the image below
TAG : java
Date : November 15 2020, 03:01 PM , By : Zhan Choe
Read parquet data from AWS s3 bucket
Read parquet data from AWS s3 bucket
this one helps. I need read parquet data from aws s3. If I use aws sdk for this I can get inputstream like this:
TAG : java
Date : November 15 2020, 03:01 PM , By : Tabitha Castor
Java Android PDF (Bitmap) is not diplayed at full size
Java Android PDF (Bitmap) is not diplayed at full size
fixed the issue. Will look into that further I'm trying to show a PDF File in my App but when I show the file, it is not shown at full size, it only covers about 1/4 of the screen. , Try setting it as page width and height. Use below code and check
TAG : java
Date : November 14 2020, 03:01 PM , By : CDosRun
Adding itextpdf libraries to Eclipse
Adding itextpdf libraries to Eclipse
seems to work fine The iText source code is managed in Github. You can download the iText 7 binaries (the .jar files) in the .zip files in the releases page or the developer's page. There is a Community (opensource) version you can download freely.
TAG : java
Date : November 14 2020, 03:01 PM , By : qiaobing dai
Java Swing - Maskformatter digits from Right to Left
Java Swing - Maskformatter digits from Right to Left
I think the issue was by ths following , Here is a customized text field that uses a custom DocumentFilter that should help:
TAG : java
Date : November 14 2020, 03:01 PM , By : Lewis Yoki
JNLP can't find main class built with Maven
JNLP can't find main class built with Maven
To fix this issue I think your JNLP is not valid.(see https://docs.oracle.com/javase/tutorial/deployment/deploymentInDepth/jnlpFileSyntax.html):
TAG : java
Date : November 14 2020, 03:01 PM , By : Yongtao Ding
Using Json Data in hashmap , For exact reference to json Array data .And using it as a string array for numberpicker
Using Json Data in hashmap , For exact reference to json Array data .And using it as a string array for numberpicker
I wish this helpful for you you need to store your data in a Map like this
TAG : java
Date : November 14 2020, 03:01 PM , By : Harsh Vaidsain
Does LinkedHashSet constructor preserve order
Does LinkedHashSet constructor preserve order
this one helps. Looking at the Java 8 implementation of java.util.LinkedHashSet you have this constructor:
TAG : java
Date : November 14 2020, 03:01 PM , By : Krystian
FXML to open a new scene via button
FXML to open a new scene via button
To fix this issue Here is how could show a new stage. Add this code in your on action function (you can add that function with scene builder in code : On action property)
TAG : java
Date : November 14 2020, 03:01 PM , By : windigo000
How to throw custom exception with Retrofit2 and RxJava2
How to throw custom exception with Retrofit2 and RxJava2
I wish did fix the issue. Your .map is trying to return both SomeBusinessObject as well as Observable. Since they don't have a common parent object it cannot resolve what Observable.error() should return.The solution it to use .flatmap instead and re
TAG : java
Date : November 14 2020, 03:01 PM , By : Royston
How to generate java's hashcode method in intellij with its members sorted?
How to generate java's hashcode method in intellij with its members sorted?
hope this fix your issue Based on @CrazyCoder's suggestion, I developed a macro for intellij.
TAG : java
Date : November 14 2020, 03:01 PM , By : Alex Tellstone
A more effective way to check if several values are true
A more effective way to check if several values are true
wish help you to fix your issue Using a ternary operator could be nice but i don't know if it would really improve performances anyway you can try this:return valPath.exists() ? loadvalue() : createvalue();
TAG : java
Date : November 14 2020, 03:01 PM , By : gabegm
No commit for Ignite CacheStoreAdapter
No commit for Ignite CacheStoreAdapter
I wish this help you You use try-with-resource for connection, so each time, when you leave this block, a connection will be closed.
TAG : java
Date : November 14 2020, 03:01 PM , By : Charles
Customize/Extend Spring's @Async support for shiro
Customize/Extend Spring's @Async support for shiro
I think the issue was by ths following , I managed to achieve what I want - shiro subject is automatically bound and unbound to tasks that are executed by spring's async support - by providing an extended version of the ThreadPoolTaskExecutor:
TAG : java
Date : November 14 2020, 03:01 PM , By : V Ravi Kumar
Intellij idea gives java7 errors though compiling in java8
Intellij idea gives java7 errors though compiling in java8
I wish did fix the issue. Got it. I had to change the and version in my POM file for Maven plugin.
TAG : java
Date : November 14 2020, 03:01 PM , By : PythonNoob
How Can I convert a tilde separated csv file into xml in java
How Can I convert a tilde separated csv file into xml in java
I hope this helps . You can use OpenCSV (short tutorial here) to read your CSV file and write it to a XML.Here is one way this could be done using the mentioned technologies
TAG : java
Date : November 14 2020, 03:01 PM , By : balancekeeper
How to suppress main thread until a TimerTask thread which is invoked by main thread is finished?
How to suppress main thread until a TimerTask thread which is invoked by main thread is finished?
should help you out The whole purpose of creating a new Thread is to start it separately from the main thread - to get parallel execution. You got 3 threads because the timertask creates its own thread. If you want your current (main) thread to stop
TAG : java
Date : November 13 2020, 03:01 PM , By : Montanana
Create a Java string form a linux command
Create a Java string form a linux command
it fixes the issue I have a linux command: , you need to escape ""
TAG : java
Date : November 13 2020, 03:01 PM , By : Giovanni Maria Mandu
Resume transfer of files after connection reset FTP
Resume transfer of files after connection reset FTP
wish help you to fix your issue First of all it isn't clear what is that sourceHandler for, but you really should be sure that it is subscribed (or targetHandler) to proper channel.I somehow believe that in your target code the targetHandler is reall
TAG : java
Date : November 13 2020, 03:01 PM , By : Nahid Bhuyan
Direct JavaBean field access from templates vs getter
Direct JavaBean field access from templates vs getter
it fixes the issue Ok, as mentionned in the comments, @AlexK pointed me to the right direction. The faulty developper is not on the Jasper's team, but on mine. Somebody, someday, thought it would be a good idea to use reflection (almost) everywhere,
TAG : java
Date : November 13 2020, 03:01 PM , By : Hack BS
date in spring hibernate query
date in spring hibernate query
I wish this help you From the docs
TAG : java
Date : November 13 2020, 03:01 PM , By : Sudip Sasmal

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