JAVA QUESTIONS

How to specify a sequence-based generated value in Hibernate 5 via legacy mapping

wish helps you I have had to delve into the source code of Hibernate to find that one out: parameter sequence has been renamed to sequence_name.

TAG : java

Date : January 11 2021, 11:39 AM , By : usingtechnology

Spring-boot application not getting auto-deployed on startup

I wish this help you I added the annotation @EnableAutoConfiguration to AppConfiguration.java and it started working. The application was not able to determine which type of ServletWebServerFactory to create. After adding above annotation, it created

TAG : java

Date : January 10 2021, 02:06 PM , By : Jim F.

How to only pass strings that the user select

like below fixes the issue When i click a button i need the button to pass only the selected String. , It seems that you have unnecessary strings

TAG : java

Date : January 10 2021, 02:06 PM , By : 40a

Is there a way to SELECT using "GREATEST(field1, field2)" where field1 and field2 are aggregate sums in the sa

will help you I have a java app calling a query written in HQL, calling postgres. The problem is I want to be able to aggregate (sum) two fields and then project the "greatest" of these aggregations. See https://www.postgresql.org/docs/8.4/functions-

TAG : java

Date : January 10 2021, 02:06 PM , By : Daniel Reslie

How to handle JSON objects wrapped into one JSON object with retrofit2?

Does that help I'd personally do this in 2 steps to avoid having to write a custom adapter for the deserialization.I'd write the interface like:

TAG : java

Date : January 10 2021, 02:06 PM , By : JoeCh

Configure Hazelcast CPSubsystem Retries Timeout

This might help you After a few days of testing, I came to the following conclusion: However CPSubsystem demands at least three modules to start working, it is fine to have two instances running In the most catastrophic possible scenario I presented

TAG : java

Date : January 10 2021, 02:06 PM , By : yatil

how to use onBindViewHolder with multiple items in android RecyclerView

To fix the issue you can do Add items to ArrayList and then set the DressAdapter only once.And with @Bindable fields, one can data-bind the card-views.

TAG : java

Date : January 10 2021, 02:06 PM , By : Harvey

No ParameterResolver registered for parameter in BeforeAll method

around this issue Solved. Changed TestContext to VertxTestContext and used its methods. Also i deleted Async async = context.async()

TAG : java

Date : January 10 2021, 02:06 PM , By : Marianisho

Finding the path in a graph with the least casualties according to the lanchester square law

Hope this helps I see three problems with your code: Storing your starting force in the graph creates ambiguity since you can't tell whether this edge has your forces or enemy's forces as weight. This will be a problem if two cities are connected wit

TAG : java

Date : January 10 2021, 02:06 PM , By : LinnheCreative

MongoWriteException when inserting into Mongodb with composite custom _id

will help you As it turns out for Mongo filters, the order of json properties matter. With debugging it is possible to see what the actual orders of the properties in the filters are and then you can set your model properties order with @JsonProperty

TAG : java

Date : January 10 2021, 02:06 PM , By : Helpful Dude

Fetch Oracle procedure metadata with Java when multiple procedure signatures

should help you out If you are not averse to using the oracle data dictionary, you can get all the procedure/column metadata like this:

TAG : java

Date : January 10 2021, 02:06 PM , By : Jason Vance

Value modification of key-pair in HashMap and impact for a HashCode

seems to work fine the interviewer asked why HashCode quality is so important in the situation when we have an object in HashMap and for some reason, we modified the value of one particular pair in HashMap.

TAG : java

Date : January 10 2021, 02:04 PM , By : tjh0001

Migration from solrj to spring-data-solr

wish helps you This answer may help somebody, so:spring-data-solr (v4.0.10.RELEASE) does not support DisMax Parameters, so you're not able to use these params by default, the solution was to create custom SolrQuery:

TAG : java

Date : January 10 2021, 02:04 PM , By : Ian

How to check if you're still connected to the database with jpa

it helps some times Short answer: don'tLong answer: if you're developing an application where this is important, you will probably be using some sort of database connection pooling framework, like the

TAG : java

Date : January 10 2021, 02:04 PM , By : James B

Use Date type in the graphql scheme

around this issue After some research, I found resolvers for the java types in the graphql-java-9.2.jar!/graphql/Scalars.class and inspired of it.

TAG : java

Date : January 10 2021, 02:04 PM , By : Ambarish Singh

Split and add the string based on length

Hope that helps I think you need to modify your loop just a little bit. My results match.

TAG : java

Date : January 10 2021, 02:04 PM , By : Bjørn Lyngwa

Is "main" method of spring boot application required when deploy as war

I wish this help you No you don't because nobody will ever call it.Expect for the case if you want to run it outside of the web container.

TAG : java

Date : January 10 2021, 02:04 PM , By : pacorro2000

Getting the average within specific numbers in an array

I wish did fix the issue. You just have to access surrounding 5 number like this values[i-2]+...+values[i+2]. Moreover, you should take care of the case in which your input data is not in correct form with your coded logic. For example:

TAG : java

Date : January 10 2021, 02:04 PM , By : mtnmuncher

how to use izpack to make my jar application to installer?

I wish this helpful for you Hello In the link below you will find a nice help about izpack installer.http://www.imrantariq.com/blog/?p=89

TAG : java

Date : January 10 2021, 01:57 PM , By : Mihai Mocanu

What is meant by src in Java Eclipse?

This might help you You mean the src folder? It's short for "source", it's where the source code files are stored. When it compiles it stores the class files in bin

TAG : java

Date : January 10 2021, 01:57 PM , By : SachinJadhav

Create a mirrored linked list in Java

fixed the issue. Will look into that further Linked-List: Mirror

TAG : java

Date : January 10 2021, 01:57 PM , By : pacorro2000

Examples of good JPA Java Desktop Application

Hope that helps Maybe not exactly what you're expecting but I suggest to check Christian Bauer's Hibernate and Swing demo app (and also have a look at Jens Schauder's answer on SO).

TAG : java

Date : January 10 2021, 01:57 PM , By : Don Changer

Translate Java to Python -- signing strings with PEM certificate files

Any of those help I looked into doing this with pyCrypto and keyczar but the problem is neither have the ability to parse X509 certificates (keyczar has keyczar.util.ParseX509() but it is limited and doesn't work for the AWS cert or I'm guessing any

TAG : java

Date : January 10 2021, 01:57 PM , By : user186876

Algorithm Analysis tool for java

This might help you This isn't something that is generally doable automatically. Big-O analysis isn't a trivial thing.Are you sure you're not looking for a profiler instead?

TAG : java

Date : January 10 2021, 01:57 PM , By : bjorngylling

Java serial comm API - what does inputstream.read() return if a timeout occurs?

wish of those help What does the javadoc say?read()

TAG : java

Date : January 10 2021, 01:57 PM , By : dantino

How do I make a background thread in Java that allows the main application to exit completely? This works in Linux, but

With these it helps Your best bet is to launch a completely independent program for that, which is independent from the launching program. You can do that with Runtimeexec(), ProcessBuilder or Desktopopen().

TAG : java

Date : January 10 2021, 01:57 PM , By : Imran

How to add an image dynamically at runtime in java

I wish this helpful for you getRuntime().exec is for launching an external program. To simple load a file to use in your Java application you can simply treat it like any other file. Indeed if you are using Swing, the ImageIcon constructor will take

TAG : java

Date : January 10 2021, 01:57 PM , By : Lauren Kirschner

Java App on Mac asking for allow network connections everytime

wish of those help You can choose to allow incoming connections for specific services in System Preferences > Security > Firewall.Addendum: You application will appear only if the user has chosen to "Set access for specific services and applications.

TAG : java

Date : January 10 2021, 01:57 PM , By : KaoFloppy

Best actively maintained Java XMPP Library?

wish helps you Perhaps that is because XMPP has been stable over that timespan. Anyway, I like Smack, but I've done nothing more than experiment with XMPP.

TAG : java

Date : January 10 2021, 01:57 PM , By : Crilledk

Multi-Threaded Application - Help with some pseudo code!

I hope this helps . This sounds like the classic consumer-producer problem. Have a look at Wikipedia's article about it. They have plenty of pseudo code there.

TAG : java

Date : January 10 2021, 01:57 PM , By : CookingCoder

Scoping a StringBuilder inside a for loop

I hope this helps you . Well, aside from the slight code smell of creating new objects inside a loop, I could see you creating a StringBuilder inside a for loop to generate a long string for each item in the for-loop.However, you could also scope it

TAG : java

Date : January 10 2021, 01:57 PM , By : user157138

How to specify hash algorithm when updating LDAP via Java?

Hope that helps Is there a way to specify the hash algorithm (MD5, SHA1, etc.) to use for storing the passwords when you update an Open LDAP directory using Java APIs with code like this: , Something along these lines should do it: (MD5) Shown

TAG : java

Date : January 10 2021, 01:57 PM , By : unadopted

Class not found exception (org.apache.openjpa.enhance.PersistenceCapable) thrown in a client of WLS 10

To fix the issue you can do I am developing an aplication using WLS 10 When i try to conect (lookup) to an EJB from a specific jar of my ear aplication, an exception of type "ClassNotFoundException" of the class "org.apache.openjpa.enhance.Persistenc

TAG : java

Date : January 10 2021, 01:57 PM , By : doctorbigtime

In Java ,where in memory are class functions put?

I wish did fix the issue. Depends on the implementation. Generally you shouldn't worry about such things in Java. The entire concept of a "VM" is to abstract away such things as this. Now I would assume that the functions are stored somewhere close t

TAG : java

Date : January 10 2021, 01:57 PM , By : Imran

How do I test expectedExceptionsMessageRegExp (exception message) using TestNG?

To fix the issue you can do I'm using the expectedExceptionsMessageRegExp propery on the @Test annotation to test an exception message, but it is not executing correctly. See the code below. , It seems to work for me:

TAG : java

Date : January 10 2021, 01:57 PM , By : negonicrac

Help In understanding Multi Dimentional Arrays

like below fixes the issue You can see your three dimensional array as 3 bidimensional array of 4x5 elements, or 12 one dimensional array of 5 elements.That's why you have 12 rows in your output.

TAG : java

Date : January 10 2021, 01:57 PM , By : Marc Dong

No bean named '...' is defined and Spring @Resource annotation

help you fix your problem I use @Resource to annotate bean classes, @Autowired to autowire dependencies, and in Spring configuration file these things: , Is missing ?

TAG : java

Date : January 10 2021, 01:57 PM , By : jch

Singleton design pattern vs Singleton beans in Spring container

wish helps you A singleton bean in Spring and the singleton pattern are quite different. Singleton pattern says that one and only one instance of a particular class will ever be created per classloader.The scope of a Spring singleton is described as

TAG : java

Date : January 10 2021, 01:57 PM , By : Matt Leacock

flashvars object was not working in mozilla browser

seems to work fine With the embe method you are using above, the flashVars are not represented in the portion of the whole embed code. When Firefox is reading this it is only processing attributes associated with , which is why you duplicate things l

TAG : java

Date : January 10 2021, 01:57 PM , By : walshtp

Shell script to import mysql dump file

Hope this helps I'm new to mysql. My requirement is to create a shell script to import a sql dump file into mysql in linux and this script should be called by java program for the restoration to take on a button click. , It can be done by using mysql

TAG : java

Date : January 10 2021, 01:49 PM , By : Guy Kastenbaum

What are the best practices to separate data from users

Hope that helps You really have to understand the difference between the persistency layer and the application layer.It doesn't matter how you define your database tables, as anyone with database access will have access to all the users data. What do

TAG : java

Date : January 10 2021, 01:49 PM , By : Dominique Vocat

May I use com.google.code prefix for my packages?

seems to work fine the name of your packages does not have to reflect the domain it's hosted at.I think using com.google prefix will mislead your users into thinking the code was developed at google. don't do it unless you want to handle the backfire

TAG : java

Date : January 10 2021, 01:49 PM , By : walshtp

How to set classpath in manifest file , while creating JAR from eclipse?

this one helps. If you are using eclipse >=3.4 try "export as runnable jar file" it should generate it correctly.Otherwhise you can provide your own manifest file in the export as jar dialog.

TAG : java

Date : January 10 2021, 01:49 PM , By : rhyhann

dealing with voice in java

hop of those help? I did some research on this about 10 years ago at a research lab so I might be a bit out of date! At the time there was no standard for the whole process. You have to use the Java sound API to record and playback, then any network

TAG : java

Date : January 10 2021, 01:49 PM , By : Stone

Error: java.security.AccessControlException: Access denied

I wish did fix the issue. Old thread, but I stumbled upon it so here's an updated answer.The answer is in your stacktrace. while it may relate to the use of Domino this is a general issue that would occur for a pretty simple applet used on a normal J

TAG : java

Date : January 10 2021, 01:49 PM , By : jaset

How to verify the root trust of a ceritifcate

hop of those help? Yes, it does exactly that: clientCert.verify(rootCert.getPublicKey()) checks that clientCert was signed with the private key of root

TAG : java

Date : January 10 2021, 01:49 PM , By : Tink

Searching for a standalone JSP compiler

help you fix your problem There is an ant task that is shipped with tomcat that precompiles the jsps:

TAG : java

Date : January 10 2021, 01:49 PM , By : Ricardo

Spring 2.5 managed servlets: howto?

To fix this issue You can also define your servlets directly in the Spring application context. You'll need a "proxy" servlet registered in web.xml and delegating to the servlet instance which is configured as bean in the applicationContext.xml. Prox

TAG : java

Date : January 10 2021, 01:49 PM , By : mtnmuncher

iBatis get executed sql

To fix the issue you can do It's posible to show this information.iBatis uses some the Logging framework including Log4J.To use Log4J create file log4j.properties in the class path.You've to put the next lines in the file for example:

TAG : java

Date : January 10 2021, 01:49 PM , By : user149634

GRAPH: find an algorithm to determine the shortest path from one point to another in a rectangular maze?

around this issue Just use Dijkstra's algorithm, using the implicit graph in the cardinal directions. Using the heap implementation it will be O(V log V), which should be good enough for 500x500. The first time you relax a node, it is with the lowest

TAG : java

Date : January 10 2021, 01:49 PM , By : S. Fenz

Efficient JSON encoding for data that may be binary, but is often text

Any of those help Use quoted-printable encoding. Any language should support that. http://en.wikipedia.org/wiki/Quoted-printable

TAG : java

Date : January 10 2021, 01:49 PM , By : Longchao Dong

How to Read Java File Structure using Java?

will help you This can be accomplished using the Java Compiler API (introduced in Java 6). Unfortunately, this solution is limited to Sun's JDK. Therefore, you will have to have that JDK installed and you must include its tools.jar file in your class

TAG : java

Date : January 10 2021, 01:49 PM , By : Frank Bradley

Java-Hibernate-Newbie: How do I acces the values from this list?

will help you To strictly answer your question, queries that specify a property of a class in the select clause (and optionally call aggregate functions) return "scalar" results i.e. a Object[] (or a List). See 10.4.1.3. Scalar results. But your curr

TAG : java

Date : January 10 2021, 01:49 PM , By : kiirpi

Smallest executable for Windows

I hope this helps you . And their 1 requirement is to have the smallest possible package for xcopy deployment.

TAG : java

Date : January 10 2021, 01:49 PM , By : kgw

Java: matching two different type of array

Any of those help I recommend to use a Map instead. This way it's more easy to keep key-value pairs together.

TAG : java

Date : January 10 2021, 01:49 PM , By : Phil Austin

how to accept valid e-mail id in text box?

it helps some times You need to validate the email. The easiest way is to use a regular expression: There is information here. This of course, would be on the client side, when you validate your form.If you are using hibernate bean validation, there

TAG : java

Date : January 10 2021, 01:49 PM , By : moops

How can I know where a Null Pointer Exception originated?

may help you . You can view the stacktrace if you catch Throwable instead of catching Exception or any subclass of Exception. e.g.

TAG : java

Date : January 10 2021, 01:49 PM , By : Ian Badcoe

Memory limited image processing in server

I wish did fix the issue. I would suggest considering moving the image processing part to a separate JVM which you communicate with from your main application using RMI or similar.This allows you to tune the processing JVM separately from the main JV

TAG : java

Date : January 10 2021, 01:49 PM , By : user107021

Java Multiple ResourceBundles

This might help you I want to load multiple property files from various packages as ResourceBundle. Can I achieve that in Java , Extend java.util.PropertyResourceBundle and call setParent.

TAG : java

Date : January 10 2021, 01:49 PM , By : Pancilobak

How to serialize Java primitives using Jersey REST

I hope this helps you . Have a look at Genson.It helped me a lot with a similar problem.With Genson you could use generics like int,boolean, lists and so on...Here is a quick example.

TAG : java

Date : January 10 2021, 01:49 PM , By : Manik