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JAVA QUESTIONS

Error with gradle when adding google maps
Error with gradle when adding google maps
should help you out According to Google's document Setting Up Google Play ServicesNote: If the number of method references in your app exceeds the 65K limit, your app may fail to compile. You may be able to mitigate this problem when compiling your a
TAG : java
Date : October 28 2020, 10:01 AM , By : Srinivasa Rao Dammav
Test two synchronized methods in Java
Test two synchronized methods in Java
hope this fix your issue Imagine if addValueThread runs first and adds avalue to list but before it calls waitForListToGetEmpty() , JVM starts removeValueThread and it calls removeValueFromList() in the process it grabs the lock and ends up calling n
TAG : java
Date : October 28 2020, 10:01 AM , By : mehdi
Can Maven package two jar in one module , with the same files name but different chartset?
Can Maven package two jar in one module , with the same files name but different chartset?
it should still fix some issue I have a project , just one module , but need to package two jar, with the different charset (just the config.yml file need two be differet, in the resources folder). , thanks every body, I use antrun at last :
TAG : java
Date : October 28 2020, 10:01 AM , By : FRNS GEC
Can't assign value to a global variable when passed from onClick()
Can't assign value to a global variable when passed from onClick()
it should still fix some issue I am trying to pass a data to a variable form inside onClick. it returns null. I will then use that variable to pass it into a method. I am relatively new to android programming and this has been bugging me for hours. h
TAG : java
Date : October 28 2020, 10:01 AM , By : lidz
list.add() does not add data to ArrayList
list.add() does not add data to ArrayList
I wish did fix the issue. This is an issue with scope. You cannot access your list object within the addBook() object. So, you have to either make list a parameter to addBook() or you can make it a global variable.This code fixes it using a global va
TAG : java
Date : October 28 2020, 10:01 AM , By : Jorn
How to print DateTime without milliseconds
How to print DateTime without milliseconds
To fix the issue you can do I am reading data from a file and will need to serialize it out elsewhere after some computation. How can I get the following to print without milliseconds so that the string that is passed to DateTime.parse and what is ou
TAG : java
Date : October 28 2020, 10:01 AM , By : Sabilla Vega
Can I deploy files on google cloud storage using gradle?
Can I deploy files on google cloud storage using gradle?
Does that help After a lot of attempts, I am going to post the solution that I built, tested, perfected and that I am using in production.First of all I created a new Java Class that handles the file upload using Storage, ACL and BlobInfo
TAG : java
Date : October 28 2020, 10:01 AM , By : Sanowar Ali
How to read text displayed on the window pop up on UL class by selenium
How to read text displayed on the window pop up on UL class by selenium
around this issue I need to read the text displayed on the popup window in Web driver using Java. I am able to handle the popup window for closing. I don't know how to read the text displayed on Popup window and print it in Console. , 1.You can use t
TAG : java
Date : October 28 2020, 10:01 AM , By : Rizwan Zakir
How to unit test and mock a method that takes a ModelAndView as Parameter
How to unit test and mock a method that takes a ModelAndView as Parameter
Hope this helps I've hacked a unit test for you. I´m using Mockito to create a mock for ModelAndView. Mocking the ResourceBundle isn't possible as the getString() method is final. So I´m using a dummy implementation to manipulate the return value. If
TAG : java
Date : October 28 2020, 10:01 AM , By : Arjun Shinde
Java JMenuItem in loop
Java JMenuItem in loop
I hope this helps you . I want to add menu items lines each for the list of colours, but have the error like , The loop for should be:
TAG : java
Date : October 28 2020, 08:10 AM , By : yaslab
Issue in fetching records from database using Hibernate
Issue in fetching records from database using Hibernate
hope this fix your issue The method shown below is not fetching data from db with the criteria strProductId. I'm getting the value of strProductId inside the method. Can anyone please help.. in advance.... , you can do some thing like this
TAG : java
Date : October 28 2020, 08:10 AM , By : Rudy Susanto
Implementing a universal Observer Pattern/Listener for the app
Implementing a universal Observer Pattern/Listener for the app
around this issue Yes, you have two options:1) Just make an abstract class with all blank impl. methods that way
TAG : java
Date : October 28 2020, 08:10 AM , By : Someone Something
Rebuild byte array with bigInteger and other method
Rebuild byte array with bigInteger and other method
wish help you to fix your issue Don't use either of these approaches. Either convert into hex directly (not using BigInteger) or use base64. BigInteger will faithfully reproduce numbers, but it's not meant to be a general purpose binary-to-hex conver
TAG : java
Date : October 28 2020, 08:10 AM , By : mark zhong
Why does ./sbin/start-master.sh give "Error: Could not find or load main class org.apache.spark.launcher.Main"
Why does ./sbin/start-master.sh give "Error: Could not find or load main class org.apache.spark.launcher.Main"
this one helps. guys for your comments.I have reinstalled spark 1.5.2 and it works for me. Earlier the problem was with the spark-1.5.2.tar file. So I downloaded the fresh tar file of spark 1.5.2 and reinstall spark and now it works properly.
TAG : java
Date : October 28 2020, 08:10 AM , By : chad nash
Generate apk failed :The system cannot find the path specified
Generate apk failed :The system cannot find the path specified
should help you out check your gradle file if there is minifyEnabled true change it to minifyEnabled false in the app.gradle file.And then let me know. Also try changing the directory of apk , I mean try to change the root where apk is going to save
TAG : java
Date : October 28 2020, 08:10 AM , By : raul turcu
json jackson unusual map serialization
json jackson unusual map serialization
it fixes the issue It is quite possible with the help of Jackson's custom serializer: add the @JsonSerialize annoation to your POJO:
TAG : java
Date : October 28 2020, 08:10 AM , By : Priyanka Dhomne
Sruts2 <s:radio /> with label read from .properties file
Sruts2 <s:radio /> with label read from .properties file
around this issue I am migrating the code from Struts1 to Struts2 where I have the following scenario: , Assuming A,B,C to be Strings:
TAG : java
Date : October 28 2020, 08:10 AM , By : suraj sukla
Performance/Memory in Java for data generation over multiple files
Performance/Memory in Java for data generation over multiple files
this will help Naturally doing just about anything carries a performance/memory impact, but anyway...The most glaring awkward part of this problem is the CSV file. It's a plain text format, and that effectively renders each field you output into a va
TAG : java
Date : October 28 2020, 08:10 AM , By : Kostya283
Android: show/hide menuitem based on number of items in the ListView
Android: show/hide menuitem based on number of items in the ListView
I hope this helps you . In your custom array adapter, you can do something like this:CustomArrayAdapter.java
TAG : java
Date : October 28 2020, 08:10 AM , By : nagalinga pandy
Implementing styles from Support Library v7 in android
Implementing styles from Support Library v7 in android
seems to work fine I`m trying to implement Support Library v7 in my project and having issues with an style which are bundled with it. , There is a typo in your style. Remove the dot.
TAG : java
Date : October 28 2020, 08:10 AM , By : Akash Limaye
Edit : javafx : Exception Councurrent Modification How to Handle it
Edit : javafx : Exception Councurrent Modification How to Handle it
I wish did fix the issue. This exception occurs when you try to modify a Collection while iterating through its elements. To avoid this, you can use the iterator of the collection (Collectioniterator()) to traverse through the elements, then you can
TAG : java
Date : October 28 2020, 08:10 AM , By : JGBooysen
Mocking a file, filewriter and csvwriter within a method for unit test throwing NullPointerException
Mocking a file, filewriter and csvwriter within a method for unit test throwing NullPointerException
I wish this helpful for you I have solve this problem by replacing FileWriter with StringWriter, only for testing purpose. Like,
TAG : java
Date : October 28 2020, 08:10 AM , By : amarvashishth
unable to get strings from SharedPreferences?
unable to get strings from SharedPreferences?
wish help you to fix your issue I 'm creating a list that stores and keeps the values as string using shared Preferences.I want to store time of events(Some events). , It has to do with the following line
TAG : java
Date : October 28 2020, 08:10 AM , By : jayant kanugovi
Spring JDBC - ClassCastException when casting Object to Blob
Spring JDBC - ClassCastException when casting Object to Blob
To fix this issue A Blob is just a wrapper for a (possibly large) byte[]. What you're getting back from Spring here is the interesting raw data, the byte[] (or B[ in the exception's notation). So, just use that instead, it'll be much easier to work w
TAG : java
Date : October 28 2020, 08:10 AM , By : danial long
Java 2 Dimensional Array Constructor
Java 2 Dimensional Array Constructor
it should still fix some issue I need to make a constructor for a 2 dimensional array. , This example is more clear create your own class.
TAG : java
Date : October 28 2020, 08:10 AM , By : Bipin K
Poll for all threads to return expected result using java8
Poll for all threads to return expected result using java8
I think the issue was by ths following , The Stream API is not designed for such tasks, it’s intended for computation task, i.e. tasks which consume CPU time, not tasks waiting for a server response.Using an ExecutorService is straight-forward if you
TAG : java
Date : October 27 2020, 04:13 PM , By : martin-steglich
Validating data in constructor and throwing exceptions
Validating data in constructor and throwing exceptions
may help you . In general, validating parameters in constructor is not a bad practice, it's always depends on what you are actually implementing.In your particular case I recommend you the following:
TAG : java
Date : October 27 2020, 04:13 PM , By : johan
array with zero values
array with zero values
this one helps. If the zeros are your problem, than don't initialize your array with a constant value ("20", in your example).Just change your scanning code to:
TAG : java
Date : October 27 2020, 04:13 PM , By : Oscar Mon
What is error In this Java Inventory Management System Code?
What is error In this Java Inventory Management System Code?
This might help you , There is a closing parenthesis missing:
TAG : java
Date : October 27 2020, 04:13 PM , By : Ruy
jersey requestdispatcher execution order
jersey requestdispatcher execution order
I wish did fix the issue. If you were to use a ContainerRequestFilter instead of a RequestDispatcher, you could make use of the CachedEntityContainerRequest that's meant for exactly this.
TAG : java
Date : October 27 2020, 04:13 PM , By : Dru Morgan
java BufferdImage dosen´t load
java BufferdImage dosen´t load
this one helps. There are two possibilities:1. Your program may not be running in the folder that contains the "Pictures" folder.
TAG : java
Date : October 26 2020, 11:58 AM , By : Ashish Rana
NullPointerException on PriorityQueue A* algorithm
NullPointerException on PriorityQueue A* algorithm
will be helpful for those in need Your program fails at node G when it adds a Node to the queue without setting adjacencies to any values. The following piece of code tries to add child without assigned adjacencies:
TAG : java
Date : October 26 2020, 11:58 AM , By : Maria
Understanding for loops and array indexes
Understanding for loops and array indexes
To fix this issue First, read about default values. As written there, the int type's default value is 0.So, When you initialize your int array in the first line:
TAG : java
Date : October 26 2020, 11:58 AM , By : navihr
Ant jar task include a single class file only
Ant jar task include a single class file only
this one helps. i have an ant task , The Jar task takes a nested fileset, so you can do this:
TAG : java
Date : October 26 2020, 11:58 AM , By : Groosling
NOT deleting the existing content of the file
NOT deleting the existing content of the file
it should still fix some issue I'm trying to write multiple ArrayLists to a text file. However, it keeps overwriting to the existing content. I want to keep the existing content of the text file and keep adding ArrayLists to it. Here is my code: , Us
TAG : java
Date : October 26 2020, 11:58 AM , By : haytch
User defined value in session a security risk?
User defined value in session a security risk?
it fixes the issue In the end i decided to only do a check on string length.Most of the security concerns are related on how a servlet container/app server implements the way it handles sessions. This does seem to differ from container to container.
TAG : java
Date : October 26 2020, 11:58 AM , By : Cem Öner
JPA: Select any row by distinct column
JPA: Select any row by distinct column
like below fixes the issue The solution to this problem was rather simple. First, we have to add the criteria for the multi select columns we seek, and set distinct to true:
TAG : java
Date : October 26 2020, 11:58 AM , By : Deb
Spring 4 application.properties @Value is not set when running Junit test case
Spring 4 application.properties @Value is not set when running Junit test case
like below fixes the issue You dont need to add PropertySourcesPlaceholderConfigurer when you are using SpringBoot, it is already added by default. why EntApiUtil property values are not set?
TAG : java
Date : October 26 2020, 11:58 AM , By : Stuart Burrell
How to Handle Denied Permissions Android M (EasyPermissions)
How to Handle Denied Permissions Android M (EasyPermissions)
This might help you Check this link.Here you have to implement the EasyPermissions.PermissionCallbacks with this you will be provided to add methods which will be onRequestPermissionsResult, onPermissionsGranted, onPermissionsDenied. Then in onPermis
TAG : java
Date : October 25 2020, 07:20 PM , By : ApplePie
javax bean validation not working on method parameters
javax bean validation not working on method parameters
help you fix your problem you need to register MethodValidationPostProcessor bean to kick method level validation annotation
TAG : java
Date : October 25 2020, 07:20 PM , By : Toby L
Under any circumstances is it possible for `foo == null` to be false, when `foo` is indeed null?
Under any circumstances is it possible for `foo == null` to be false, when `foo` is indeed null?
Hope this helps Check the call stack; that might be coming from inside getBar().Also, if foo isn't a local variable, some other thread might set it to null after the if.
TAG : java
Date : October 25 2020, 07:20 PM , By : GuiBGP
How do I determine the minimum width of a JFrame to hide the horizontal scrollbar?
How do I determine the minimum width of a JFrame to hide the horizontal scrollbar?
wish of those help As much as I know, when you use the pack() method, it automatically chooses the minimum size needed for all the components in-hand.In another question, this subject is covered:
TAG : java
Date : October 25 2020, 07:20 PM , By : L.pavankalyan
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: Coordinate out of bounds setRGB
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: Coordinate out of bounds setRGB
help you fix your problem The reason you are getting an ArrayIndexOutOfBoundsException when rotating your image is as stated. Something is out of bounds. It could be either your i variable that has exceeded its bounds or your j variable that has exce
TAG : java
Date : October 25 2020, 07:20 PM , By : Tolis Sof
Phone number validation using regex in java
Phone number validation using regex in java
Any of those help I am new to Java and Regex. , You may use
TAG : java
Date : October 25 2020, 07:20 PM , By : chrisp7
Keep getting java.net.MalformedURLException: no protocol when setting url with variable
Keep getting java.net.MalformedURLException: no protocol when setting url with variable
I think the issue was by ths following , You are using cond.get("icon_url").toString() which surrounds string result with " like in your case:
TAG : java
Date : October 25 2020, 07:20 PM , By : Ehsan Kosari
"FF4J"(flip) not work with "Hystrix"
"FF4J"(flip) not work with "Hystrix"
I wish did fix the issue. There were a bug in FF4J for versions previous 1.5. The FeatureAdvisor did not properly handled the cglib enhanced classes (dynamic proxy).I provide you a full working sample HERE with ff4j 1.6+ (by the way, with the new con
TAG : java
Date : October 25 2020, 07:20 PM , By : Harshith Ramanath
What does really the Java time in millis means?
What does really the Java time in millis means?
I wish this help you Actually there is a difference at the millisecond level in your dates. And that makes the difference.dateOne and dateTwo are actually not equal. The fact is you are using the toString to assert the equality, which I believe is no
TAG : java
Date : October 25 2020, 07:20 PM , By : nabila
How would you check the last 2 digits of each element in an ArrayList, Java?
How would you check the last 2 digits of each element in an ArrayList, Java?
it helps some times You could rely on the Stream API by converting your Integer into String and check that they end with a given suffix as next:
TAG : java
Date : October 25 2020, 07:20 PM , By : Rachel Miller
properties file in Web project
properties file in Web project
around this issue Your approach based on ClassgetResourceAsStream(name) will only work if and only if your file is accessible from the ClassLoader of your calling class and here what you have directly under WEB-INF is not accessible, you should move
TAG : java
Date : October 25 2020, 07:18 PM , By : systematicat
Java does not release the process after writing inputstream to file
Java does not release the process after writing inputstream to file
This might help you You're opening 2 FileOutputStreams but only closing one of them. here is a snippet of your code with a comment added by me, showing which line to delete:
TAG : java
Date : October 25 2020, 07:18 PM , By : PhilPatrice
Logback giving error Cannot cast object '3 gb' with class 'java.lang.String' to class 'ch.qos.logback.core.util.FileSize
Logback giving error Cannot cast object '3 gb' with class 'java.lang.String' to class 'ch.qos.logback.core.util.FileSize
wish of those help I have a springboot application and while trying to log using logback with groovy config I am getting following error: , Try replacing the line
TAG : java
Date : October 25 2020, 07:18 PM , By : Manoj Sharma
Error org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataSource' defined in cla
Error org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataSource' defined in cla
like below fixes the issue Looks like you are missing the spring-dao.jar.nested exception is java.lang.NoClassDefFoundError: org/springframework/dao/DataAccessException
TAG : java
Date : October 25 2020, 07:18 PM , By : Jiecut W
Amazon s3 putObject Excel by stream not working(java)
Amazon s3 putObject Excel by stream not working(java)
hope this fix your issue Hi I am using amazon s3 sdk for java and I am trying to upload excel which was created dynamically.What happens that I can able to save file on local computer using: , Change the following 2 lines:-
TAG : java
Date : October 25 2020, 07:18 PM , By : Karla Lim
MongoDB using Spark Java
MongoDB using Spark Java
wish helps you When I run the code I'm getting the output as shown , how to fix this? thanks Here I have used spark java
TAG : java
Date : October 25 2020, 07:18 PM , By : Lilia Ben Hadj Mabro
I have 2 different classes that I want to add to an ArrayList what the best way to define the ArrayList?
I have 2 different classes that I want to add to an ArrayList what the best way to define the ArrayList?
it should still fix some issue The correct design depends on what you'll do after you take A or D typed objects from the ArrayList. If you're doing completely different things to different A and D objects then there is no functional overlap even if t
TAG : java
Date : October 25 2020, 07:18 PM , By : Sihab Sahariar Sizan
How to create HorizontalScrollView with multiple layout
How to create HorizontalScrollView with multiple layout
To fix the issue you can do I think what you are looking for is ViewPager.Here is an android example: https://developer.android.com/training/animation/screen-slide.html
TAG : java
Date : October 24 2020, 01:32 PM , By : rex
How to Union List<Date> list1 and List<Date> list2 in Java?
How to Union List<Date> list1 and List<Date> list2 in Java?
hope this fix your issue , tl;dr
TAG : java
Date : October 24 2020, 01:32 PM , By : Rovshan Hasanov
Player sign interact
Player sign interact
I hope this helps you . The class your method onPlayerInteract is in has to implement te interface Listener. You also have to use the EventHandler annotation and register the event in your plugin.
TAG : java
Date : October 24 2020, 01:32 PM , By : stack_overflow_error
Java: How to perform hash collision mitigation during insertion in Hashed Array Mapped Tree (HAMT)?
Java: How to perform hash collision mitigation during insertion in Hashed Array Mapped Tree (HAMT)?
it should still fix some issue You have to implements equals() method to compare if the values are equals.Hashcode is just to sort data into data collections and it is usefull to binarySearch works. But hashcode() is nothing without equals().
TAG : java
Date : October 24 2020, 01:32 PM , By : janki
How can I store a string and two parallel arraylists in an object. (java)
How can I store a string and two parallel arraylists in an object. (java)
To fix the issue you can do I would suggest you using Map collection and enum constants.Also the quiz type and the score are closely related data so they should be in a separate class.
TAG : java
Date : October 24 2020, 01:32 PM , By : 0 Kool

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