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JAVA QUESTIONS

Spring profile and property-placeholder exception
Spring profile and property-placeholder exception
This might help you I'm trying to use the profile to switch from an environment to another, this is my application context file: , Please change spring.profile.active into spring.profiles.active.
TAG : java
Date : November 19 2020, 03:54 PM , By : Henry Fan
ArrayList doesn't add a new entry
ArrayList doesn't add a new entry
This might help you You are declaring the ArrayList as a local variable of that method, so every call creates a new instance. Make it a static member :
TAG : java
Date : November 19 2020, 09:01 AM , By : Tom M
I update to android studio 1.5 but I got error android.builder.model.AndroidProject PluginClassLoader
I update to android studio 1.5 but I got error android.builder.model.AndroidProject PluginClassLoader
This might help you all I did just update to android studio 1.5 I got this error , all I do just completely close android studio android open it again
TAG : java
Date : November 19 2020, 09:01 AM , By : Henk Lambeck
activity to activity callback listener
activity to activity callback listener
should help you out This is absolutely not possible. You never instanciate a new Activity yourself. You will not have two Activities running at the same time.If you want another Activity to do something, based on what your previous Activity wants, th
TAG : java
Date : November 19 2020, 09:01 AM , By : Christian Mclellan
Long commands in Java
Long commands in Java
like below fixes the issue dictionary.subSet("a","ab").size();It's a chaining of method calls. dictionary.subSet("a","ab") returns a String object, on which you call the size method.
TAG : java
Date : November 19 2020, 09:01 AM , By : code.creative
Java heartbeat design
Java heartbeat design
I hope this helps you . So, you have a "central server" which needs to provide an heartbeat mechanism to the clients. Well, part of the solution is simple since you have only 1 server, which simplifies a LOT since you don't need to deal with data rep
TAG : java
Date : November 19 2020, 09:01 AM , By : shalini
Failed to launch calculator in android emulator through appium
Failed to launch calculator in android emulator through appium
help you fix your problem The error you are getting [INSTALL_FAILED_OLDER_SDK] is caused due to the version of android of your avd/device is older than the version being used to compile the code of the app. Check the target sdk version and the minimu
TAG : java
Date : November 19 2020, 09:01 AM , By : cheilenereinfo
Android HttpUrlConnection send multiple parameters with same key
Android HttpUrlConnection send multiple parameters with same key
I hope this helps . This is not possible with Maps or HashMaps.Taken from Oracles documentation on Maps: http://docs.oracle.com/javase/7/docs/api/java/util/Map.html
TAG : java
Date : November 19 2020, 09:01 AM , By : Karthik Janakiraman
Java8 : how to aggregate objects from a stream?
Java8 : how to aggregate objects from a stream?
This might help you As I already noted in the answer to the previous question, it's possible to use some third-party libraries which provide partial reduction operations. One of such libraries is StreamEx which I develop by myself.In StreamEx library
TAG : java
Date : November 19 2020, 09:01 AM , By : N.Caf
Why are not some of the constant fields in java enum values?
Why are not some of the constant fields in java enum values?
I hope this helps . The answer is simple: enums were only introduced in Java 5 and these constants are older than that.Unfortunately there is no way to retro-fit the API without breaking code compatibility. (Retro-fitting an API for new features soun
TAG : java
Date : November 19 2020, 09:01 AM , By : Dave Bosman
Different random output when run differently
Different random output when run differently
I wish did fix the issue. You are creating a new Random object each time you want to retrieve a random number (in the push() method) - this can lead to very poor entropy and create strange results when the program is run with different timings - usua
TAG : java
Date : November 19 2020, 09:01 AM , By : Bernard Kelly
Add text to an ArrayList in a table formate using Java
Add text to an ArrayList in a table formate using Java
it should still fix some issue You can use String.format to format the string in first place. Then store it in the Array:
TAG : java
Date : November 19 2020, 09:01 AM , By : Thiru Malai
Android: Progress Dialog shows a black screen
Android: Progress Dialog shows a black screen
I think the issue was by ths following , You should remember when it comes to Progress dialog is that you should run it in a separate thread. If you run it in your UI thread you'll see no dialog.If you are new to Android Threading then you should lea
TAG : java
Date : November 19 2020, 09:01 AM , By : Manvir Lutchman
Java : Replace id's(manually created) which are inside HTML tags
Java : Replace id's(manually created) which are inside HTML tags
I hope this helps . This answer comes with the strong caveat that you should not use regular expressions to parse HTML. Use a proper HTML parsing library.You might be able to use the following regular expression:
TAG : java
Date : November 19 2020, 09:01 AM , By : Mpho Prince
Large ninepatch stretching
Large ninepatch stretching
wish helps you This is the method I use for ninepatches and it works for me. I don't have the "split" line in my atlas, so you may not need to use it with this.
TAG : java
Date : November 19 2020, 09:01 AM , By : Michael Koska
How can I define one Java annotation in terms of another?
How can I define one Java annotation in terms of another?
I wish did fix the issue. Both @Min and @Max annotations can be used on annotations themselves. This is called constraint composition.As such, you can define a new constraint DaySeconds like this:
TAG : java
Date : November 19 2020, 09:01 AM , By : João
Add/Remove/update entry between two xml file either using Ant xmltask or using perl scripting
Add/Remove/update entry between two xml file either using Ant xmltask or using perl scripting
fixed the issue. Will look into that further Using xmlstarlet you would write
TAG : java
Date : November 19 2020, 09:01 AM , By : Kelly Jones
Get from IJavaProject or IProject to org.apache.maven.model.Model
Get from IJavaProject or IProject to org.apache.maven.model.Model
Hope this helps I found out there is a maven project registry which keeps all known maven projects of the workspace. With its aid I can get to the maven model without reading the POM manually:
TAG : java
Date : November 19 2020, 09:01 AM , By : Lounik
javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed
javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed
help you fix your problem The SSL certificate isn't trusted by Java. The certificate may be self-signed, or it may be signed by a CA (Certificate Authority) whose root certificate is not in the Java certificate store. Add the code to trust the certif
TAG : java
Date : November 19 2020, 09:01 AM , By : Ritwik Chattopadhyay
Why does the assignment of a short variable to an Integer reference produce a compile time error?
Why does the assignment of a short variable to an Integer reference produce a compile time error?
hop of those help? You want to have two things happening here: widening and auto-boxing.Unfortunately, Java does only one of the two automatically. The reason for that is most likely that autoboxing was introduced fairly late (in Java5), and they had
TAG : java
Date : November 19 2020, 12:35 AM , By : Stefan Granath
Distribute titles evenly with PagerTitleStrip
Distribute titles evenly with PagerTitleStrip
may help you . To get a GitHub project into your build: Add the JitPack repository to your build file.
TAG : java
Date : November 19 2020, 12:35 AM , By : Duko
Java8 stream lines and aggregate with action on terminal line
Java8 stream lines and aggregate with action on terminal line
Any of those help Your question sounds confusing. The Stream is closed when the close() method is called explicitly or when try-with-resources construct is used. In your code sample the stream is not closed at all. To perform custom action before the
TAG : java
Date : November 19 2020, 12:35 AM , By : Paul Auerbach
How to get joined data on inversed entity with @ManyToOne relation?
How to get joined data on inversed entity with @ManyToOne relation?
seems to work fine I am working on my school project and kind of replicating Stack Exchange site (project purpose only) , Simplest way is to also map the other end like this :
TAG : java
Date : November 19 2020, 12:35 AM , By : DOVE_5025
using only currentTimeMillis() to get the date
using only currentTimeMillis() to get the date
Hope that helps For the timezone related problem, following fix can be used. However this is just one case: other cases need to be handled as well.
TAG : java
Date : November 19 2020, 12:35 AM , By : Rheannewayne Albite
How to display result of SQL in jsp?
How to display result of SQL in jsp?
Any of those help you call the wrong column(COUNT is the sql function you are calling but not the result column):
TAG : java
Date : November 19 2020, 12:35 AM , By : Roel
Run oracle script using java code
Run oracle script using java code
fixed the issue. Will look into that further I think you need call the procedure via anonymous block in java use begin ... end instead of execute
TAG : java
Date : November 19 2020, 12:35 AM , By : Abdul Haseeb
How to create .jar files with additional resources without using an IDE
How to create .jar files with additional resources without using an IDE
this one helps. In order to create a jar of your project you need to the following command:
TAG : java
Date : November 19 2020, 12:35 AM , By : Andrew McGrath
how we would know if document was saved in Mongodb after save() method?
how we would know if document was saved in Mongodb after save() method?
wish helps you It depends on what WriteConcern are you using. If you use WriteConcern.ACKNOWLEDGED, the operation will wait for an acknowledgement from the primary server, so if no exception is raised, the record has been saved correctly. Otherwise y
TAG : java
Date : November 19 2020, 12:35 AM , By : Suraj Sugathan
How to represent repeatitive String in Java
How to represent repeatitive String in Java
may help you . I have a Java class called the "Sub_class". It is basically used to store a set of String variables that are used as inputs in another Java class called the "Main_class". The Sub_class looks something like this : , You have to use some
TAG : java
Date : November 19 2020, 12:35 AM , By : Shaika Nadeem
Stop ThreadPoolTaskExecutor on Exception
Stop ThreadPoolTaskExecutor on Exception
this will help Is it possible to stop a org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor when a non catched Exception is thrown, and how to do that ? , Since you are using anonymous inner classes, this should suffice:
TAG : java
Date : November 19 2020, 12:35 AM , By : João Rosa
Lists in a parent list
Lists in a parent list
Does that help I run through a list of objects which contains lists and I will merge all these list in a new list. I have tried to do it with Java 8 but with no success. , flatMap exists for this purpose :
TAG : java
Date : November 19 2020, 12:35 AM , By : Eiffie
Compare to_date(CurrentDate) with timestamp
Compare to_date(CurrentDate) with timestamp
may help you . NOTE: Actually it's almost impossible to match actual date with milliseconds with a stored date.UPDATE:
TAG : java
Date : November 19 2020, 12:35 AM , By : Richard Ho
After clicking OK button, Data should send to another window
After clicking OK button, Data should send to another window
I wish this helpful for you when you are manipulating window inside adempiere , you can get the ad_window_id from context like AD_Window_ID. When you inicialize another windows, you can get this object to add logs or info to show inside frame.
TAG : java
Date : November 19 2020, 12:35 AM , By : Omprakash Tulala
Keep storing of the variable value with the recursive call
Keep storing of the variable value with the recursive call
should help you out I have the contains method below to check whether a word is available in the radix trie data structure. To find the word I am using here the recursiv call of the method contains. But I am facing problem with this procedure to stor
TAG : java
Date : November 19 2020, 12:35 AM , By : Nabeel Asghar
Spring MVC @RequestParam and @SessionAttribute
Spring MVC @RequestParam and @SessionAttribute
will help you You could make @RequestParam as not required. This would allow your request to succeed, but query would then be null.
TAG : java
Date : November 19 2020, 12:35 AM , By : My Activities
Static fields in class
Static fields in class
this one helps. static {} is not a "static namespace", it's a static initializer block, use to initialize static variables.You can store your colors in a static Collection.
TAG : java
Date : November 19 2020, 12:35 AM , By : vasudev gawde
Set Transparent Color for the Whole JPanel
Set Transparent Color for the Whole JPanel
around this issue If you just need a layered panel over the whole contentPane, a simple glassPane will do fine (override it's paintComponent(...) method). For example:
TAG : java
Date : November 19 2020, 12:35 AM , By : thisplus
Hystrix Threadpool Queue not working properly
Hystrix Threadpool Queue not working properly
With these it helps Just added a Thread.sleep() in my main method so that the JVM doesnt terminate after the commands have been created and queued. Works fine now.
TAG : java
Date : November 19 2020, 12:35 AM , By : Papa Hotel
What kind of lambda expression syntax is this in Java 8?
What kind of lambda expression syntax is this in Java 8?
will be helpful for those in need Your Climb interface respects the contract of a functional interface, that is, an interface with a single abstract method.Hence, an instance of Climb can be implemented using a lambda expression, that is, an expressi
TAG : java
Date : November 19 2020, 12:35 AM , By : Christos Despotakis
short way to filter Objects on a ID
short way to filter Objects on a ID
Hope this helps It looks like you are creating a List of Company instances taken from the descriptions Collection having unique identifiers. Now, assuming that a Company's identifier is unique, and that two Company instances having the same identifie
TAG : java
Date : November 19 2020, 12:35 AM , By : sujeet Kumar prajapa
Configure JRE for sonar-runner in IntelliJ
Configure JRE for sonar-runner in IntelliJ
should help you out I found a solution for myself described in this post: https://intellij-support.jetbrains.com/hc/en-us/articles/206827547-Selecting-the-JDK-version-the-IDE-will-run-under Add a Windows environment variable called IDEA_JDK and set i
TAG : java
Date : November 18 2020, 09:01 AM , By : neelam bansal
search an array of objects with morphia
search an array of objects with morphia
I hope this helps you . Because comments is an embedded field, use the dot notation to query on the fields of an embedded document. The mongo shell query
TAG : java
Date : November 18 2020, 09:01 AM , By : duit
Can't seem to set a local java envar DATABASE url for local heroku app
Can't seem to set a local java envar DATABASE url for local heroku app
I wish did fix the issue. Was necessary to put variables in .env file, not only export them. DATABASE_URL=postgres://username:password@localhost:port/database and port was 5432. I also built, restarted, and ensured .env was ignored.
TAG : java
Date : November 18 2020, 09:01 AM , By : greenfisha
JAX-RS security - principal not persisting
JAX-RS security - principal not persisting
To fix this issue Some hints and remarks: As REST is stateless I would manage the session on client side instead of persisting a client state on server side. Stateless authentication can be achieved by sending back your BASIC authentication header fo
TAG : java
Date : November 18 2020, 09:01 AM , By : ydas
Getting view of DialogFragment
Getting view of DialogFragment
wish of those help It is because when you do editCatDialog.getView(); the view have not been yet initializied (onCreateDialog() was not called).The best way would be to add listeners in dialog in onViewCreated method. Then passing those events to you
TAG : java
Date : November 18 2020, 09:01 AM , By : sonal kothari
problems with checking input in java
problems with checking input in java
this one helps. There are two things that you might want to think about in your code: don't use an integer to stop looping if a boolean would be sufficient a do-while loop might be more appropriate for your case (you don't have to rewrite code that w
TAG : java
Date : November 18 2020, 09:01 AM , By : Nayef
Java PDF format error
Java PDF format error
I hope this helps . I have to create an new class to create an new pdf file in java. This is my code. , To solve the error use this code below.
TAG : java
Date : November 18 2020, 09:01 AM , By : Erdeniz Alçin
Linking to javadoc.io using Javadoc -link option
Linking to javadoc.io using Javadoc -link option
hope this fix your issue From the command line, use an argument like -J-Dhttp.agent=javadoc.In Maven, use something like:
TAG : java
Date : November 18 2020, 09:01 AM , By : bagful
Android Studio NDK workaround
Android Studio NDK workaround
it should still fix some issue The suggested workaround assumes that you manually copy the contents of libs directory to src/main/jniLibs.Alternative workaround is to add the following enchantment to the build.gradle file:
TAG : java
Date : November 18 2020, 09:01 AM , By : Sérgio Mendes
Referencing java class variable from log4j2.xml configuration
Referencing java class variable from log4j2.xml configuration
I hope this helps you . You have at least the following choices: Use an environment variable, like: . And define the variable before the logger is initialized, with: System.setProperty("MY_PATTERN",PatternLayout.SIMPLE_CONVERSION_PATTERN).
TAG : java
Date : November 18 2020, 09:01 AM , By : jas
Understanding Map get method
Understanding Map get method
With these it helps Short answer, yes. The map keeps references to the objects added to it. Therefor, when you call get, you get the reference to the original object and any change made is for good.
TAG : java
Date : November 18 2020, 09:01 AM , By : Andrey Dashkovskiy
Can not populate List<Item> from XML nodes
Can not populate List<Item> from XML nodes
around this issue You might try this solution please. Parse your data and add to List as :
TAG : java
Date : November 18 2020, 09:01 AM , By : lallu1992
how To Execute Hadoop Command from Java app remotely
how To Execute Hadoop Command from Java app remotely
it should still fix some issue Open your bashsrc and add the Hadoop BIN folder path to the PATH variable in the file. Run source ~/.bashrc command.Alternatively, you can make the following change to the command variable :
TAG : java
Date : November 18 2020, 09:01 AM , By : Kumar B
Flow control on blocking queue and SocketChannel write
Flow control on blocking queue and SocketChannel write
fixed the issue. Will look into that further Finally I mixed two solution to achieve what I wanted. I used bounded semaphores to limit the writers at any point of time along with timed cyclic barrier which helped me define the total writes/second.
TAG : java
Date : November 18 2020, 09:01 AM , By : hema
PageTitles for Custom ViewPager
PageTitles for Custom ViewPager
Hope this helps The following is my XML, with my PagerTitleStrip embedded into the ViewPager: , Do
TAG : java
Date : November 18 2020, 09:01 AM , By : Daniel Stiefel
Can't send POST message over Https
Can't send POST message over Https
I wish this helpful for you I recently had a similar problem. I found setRequestProperty adds to your headers, not the POST body. But the
TAG : java
Date : November 17 2020, 09:01 AM , By : Elyes
Can't do a simple data passing with an intent (Android)
Can't do a simple data passing with an intent (Android)
This might help you I dont think you have problem with passing values. While comparing you are comparing with == but you are supposed to compare with equals.
TAG : java
Date : November 17 2020, 09:01 AM , By : Tournevis
Find out if a string contains unique characters or not
Find out if a string contains unique characters or not
it helps some times The problem is that replaceFirst has as first argument a regular expression. So it plays havoc on \, ^, . and others. For that you could use:
TAG : java
Date : November 17 2020, 09:01 AM , By : Joe Alex
How to make Spring use JavaFX Application Thread in initializing Node beans?
How to make Spring use JavaFX Application Thread in initializing Node beans?
this one helps. Now I realize that most of these init() methods need JavaFX Application Thread.
TAG : java
Date : November 17 2020, 09:01 AM , By : Vuk Bundalo
will com.jcraft.jsch.ChannelSftp.get(String src,String dst) over rides the existing file?
will com.jcraft.jsch.ChannelSftp.get(String src,String dst) over rides the existing file?
With these it helps If you check the javadoc, you will see that for the get(src, dest) method the default mode is OVERWRITE, so your first file by default will be overriden by the 2nd file. The meaning of the different modes are:
TAG : java
Date : November 17 2020, 09:01 AM , By : vitkvit

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