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JAVA QUESTIONS

Using arrays in java with methods, returning arrays
Using arrays in java with methods, returning arrays
this one helps. Instead of returning desiredYield int array from getCalculate(), which you are not at all using in your printMessage(), you can prepare and return a more meaningful int array i.e. the results having your minSeeds, totalSeeds and total
TAG : java
Date : November 15 2020, 09:01 AM , By : Prabhakaran velusamy
Java Array Method
Java Array Method
fixed the issue. Will look into that further I am going to include just the necessary code here. I have indicated the problem area, about 8 lines in. I am wanting to use the containSameElements method with these inputs, k and n. I know that the probl
TAG : java
Date : November 15 2020, 09:01 AM , By : Samuel Farris
Android - Error loading JNI library when running an app
Android - Error loading JNI library when running an app
it should still fix some issue This is most likely caused by an error in the way the project is configured and is importing the library files.If you are building your project in Gradle, you need to follow a similar structure as shown here:
TAG : java
Date : November 15 2020, 09:01 AM , By : Mridul Kumar
Shuffling 2-Day array for memory match game
Shuffling 2-Day array for memory match game
will be helpful for those in need It's not clear to me why you're setting each element of themeGrid four times. But I believe this would do what you intended.
TAG : java
Date : November 15 2020, 09:01 AM , By : Gaurav Parmar
JavaFX Switch Scene in a SplitPane?
JavaFX Switch Scene in a SplitPane?
I wish this helpful for you At the Base I have an AnchorPane then a SplitPane. On the left pane I have a listView and depending on the list element selected, the right pane displays the appropriate content. The way I have done this is by overlapping
TAG : java
Date : November 15 2020, 09:01 AM , By : horroclause
Java ,import not resolved,inheritance,inner class
Java ,import not resolved,inheritance,inner class
To fix this issue Nested non static class are called Inner Classes those classes cannot live without the Outer class (which wrapped them).Java docs
TAG : java
Date : November 15 2020, 09:01 AM , By : Santhiya murugesan
How to call a method that doesn't return anything?
How to call a method that doesn't return anything?
I hope this helps . There is a structure of declaring methods in Java. From documentation
TAG : java
Date : November 15 2020, 09:01 AM , By : rahul.jaiswal619
In Java, how does PrintStream end up printing text to the console?
In Java, how does PrintStream end up printing text to the console?
wish help you to fix your issue Standard output stream in OpenJDK is a PrintStream which wraps BufferedOutputStream, which wraps FileOutputStream which is created from FileDescriptor. There are special FileDescriptor objects which correspond to the s
TAG : java
Date : November 15 2020, 09:01 AM , By : Gopinath PR
FXML Resource isn't loading
FXML Resource isn't loading
it helps some times mainController is null, so you get a NullPointerException when you call mainController.setVista(...). This is because you use the static method FXMLLoader.load(URL) to load the FXML, and never invoke load on the FXMLLoader instanc
TAG : java
Date : November 14 2020, 09:01 AM , By : Ahmad Zaki
Administrator Policy blocking Java?
Administrator Policy blocking Java?
will be helpful for those in need Also, if you extract the JDK (instead of installing it), you can get away with "not having to install java", which some administrators dislike.
TAG : java
Date : November 14 2020, 09:01 AM , By : Sandeep Kumar
Calling methods and Arrays
Calling methods and Arrays
it helps some times make those fields static and remove them from inside that method like this
TAG : java
Date : November 14 2020, 09:01 AM , By : dred
program works when stepping through but doesn't when running
program works when stepping through but doesn't when running
Does that help Problem solved. The answer was that when you run in debug it runs though all of the possibilities even if you return the answer, this is why it evaluated to true and worked, I changed the has a path method from this :
TAG : java
Date : November 14 2020, 09:01 AM , By : Oscar Soler
Finding the mode of a 2D array
Finding the mode of a 2D array
this one helps. You have a problem on generating the freq array. If I understand correctly, on the first double-for block you are trying to put the frequencies of the numbers inside the freq array.But all you do is:
TAG : java
Date : November 14 2020, 09:01 AM , By : Patrick Wong
Java ASCII encoding
Java ASCII encoding
it helps some times I have a quick question relating to ASCII and encoding. I am looking to take the input from a user - for example: "cat" - and turn it into a code. The code is as follows:
TAG : java
Date : November 14 2020, 09:01 AM , By : mokiwis
Java FileWriter refusing to overwrite
Java FileWriter refusing to overwrite
it helps some times When calling FileWriter writer = new FileWriter("c:\\testing\\testfile.txt", false); it will overwrite the file. It won't overwrite per .write. The option only applies for the contructor.
TAG : java
Date : November 14 2020, 09:01 AM , By : Stephen Santiago
Creating different objects from one method
Creating different objects from one method
This might help you Is there any way to generate different types of objects from one method without using long and complicated if-statements? , This solved the problem for me:
TAG : java
Date : November 14 2020, 09:01 AM , By : Jay Principio
How can I gather int in System.out.print
How can I gather int in System.out.print
I hope this helps . If all you need to do is just switch the values of a and b(which is how I understood your explanation) and you're allowed to switch the values through new variables, just create a temporary variable to switch them.
TAG : java
Date : November 14 2020, 09:01 AM , By : Shawna hover
Solving a simple ArrayIndexOutOfBoundsException
Solving a simple ArrayIndexOutOfBoundsException
I hope this helps . In an array with dimensions [12][12] as you introduce as static array, the max index is 11.With
TAG : java
Date : November 14 2020, 09:01 AM , By : Omar Matos
JDK Version Not in Allowed Range
JDK Version Not in Allowed Range
To fix this issue The problem is that Mule is not compatible yet with JDK 1.8, i need to use JDK 1.7I should have read the requeriments.
TAG : java
Date : November 14 2020, 09:01 AM , By : Alex Forshtat
Error:(18, 0) Gradle DSL method not found: 'android()'
Error:(18, 0) Gradle DSL method not found: 'android()'
help you fix your problem I have the problem: , Delete this from build.gradle
TAG : java
Date : November 14 2020, 09:01 AM , By : Arko Ganguli
wait for a jbutton click to continue with program execution java
wait for a jbutton click to continue with program execution java
will help you The wait and notify methods is Object exist to handle this sort of situation
TAG : java
Date : November 14 2020, 09:01 AM , By : Cristian Faryd Sepul
How should I iterate through a HashSet, removing certain elements, and altering others?
How should I iterate through a HashSet, removing certain elements, and altering others?
wish helps you You cannot add to a HashSet while iterating over it. This makes what you are trying to do slightly awkward. The line
TAG : java
Date : November 14 2020, 09:01 AM , By : Shankar
Using a Comparable to sort ArrayList
Using a Comparable to sort ArrayList
Any of those help Or you can easily perform comparison between object using lambda expressions like below :Assume that we have a list of Person with their ages;
TAG : java
Date : November 14 2020, 09:01 AM , By : Hotona Andy Pakootas
Why is Dockerized Hadoop datanode registering with the wrong IP address?
Why is Dockerized Hadoop datanode registering with the wrong IP address?
This might help you This is caused by a known docker issue (I also raised - and closed - this duplicate which describes the steps as set out in the question).There is a merged pull request which should fix the problem and is scheduled for inclusion i
TAG : java
Date : November 14 2020, 09:01 AM , By : kelvinli
IntelliJ IDEA Community Edition SDK
IntelliJ IDEA Community Edition SDK
With these it helps As we found out the actual issue was not about SDK, but about JDK which stands for Java Development Kit. It is required to set up the JDK before doing any Java programming in Intellij IDEA and by setting up I mean choosing the fol
TAG : java
Date : November 14 2020, 09:01 AM , By : Albert Dela Torre
Difference behavior of replaceAll versus replaceFirst
Difference behavior of replaceAll versus replaceFirst
should help you out You are observing the specifics of Matcher.find logic. To understand it execute the next code:
TAG : java
Date : November 14 2020, 09:01 AM , By : Mosaiceye
Cannot find symbol when calling a method
Cannot find symbol when calling a method
With these it helps You are wanting to call zacetnaNota, not nota, in the Lestvica class.Here is the fixed code:
TAG : java
Date : November 14 2020, 09:01 AM , By : FrustratedSpAdmin
TomEE startup error: Cannot create unique file, please set java.io.tmpdir to a writable folder or create work folder
TomEE startup error: Cannot create unique file, please set java.io.tmpdir to a writable folder or create work folder
this one helps. you can add openejb.system.apps=false in conf/system.properties or just export CATALINA_TMPDIR to a "new tmp dir value"
TAG : java
Date : November 14 2020, 09:01 AM , By : deOliveira luis
RxJava Observable get notified on first emission
RxJava Observable get notified on first emission
will be helpful for those in need I think you can have a practical doOnFirst with a simple take if you're handling a stream:
TAG : java
Date : November 14 2020, 07:01 AM , By : Pete238
Get all possible 5 card poker hands given 7 cards
Get all possible 5 card poker hands given 7 cards
will help you For every hand select two of the 7 cards to not use. Add all the others
TAG : java
Date : November 14 2020, 07:01 AM , By : every365
How do I initialize an array in a default constructor?
How do I initialize an array in a default constructor?
To fix this issue If you have at least a rough idea of the size of the array you wish to create, then it's straight forward. You can instantiate a new array in the constructor for that size and live with it. A good programming practice would be to cr
TAG : java
Date : November 14 2020, 07:01 AM , By : Scooby77
Change contents of BufferedImage, then update JFrame to reflect it
Change contents of BufferedImage, then update JFrame to reflect it
I wish did fix the issue. For one, you're creating a new JLabel with each re-iteration, and this JLabel is being added to nothing. Instead use the same JLabel but rather create a new ImageIcon and set the viewed JLabel's Icon.
TAG : java
Date : November 14 2020, 07:01 AM , By : link80
How to know which parameter is incorrect in MQ PCF command?
How to know which parameter is incorrect in MQ PCF command?
hop of those help? The first PCFMessage in responses should have one PCFParamter, which should be a MQCFIN, whose type is MQIACF_PARAMETER_ID and whose value will contain the ID of the attribute that the error is on.
TAG : java
Date : November 14 2020, 07:01 AM , By : Mohit
Why is my bubble sort code printing out this weird stuff?
Why is my bubble sort code printing out this weird stuff?
may help you . In Java, arrays are classes. So that string is the reference to the array, not the contents of the array. If you want to print the contents, probably the easiest way is to iterate over all the elements.
TAG : java
Date : November 14 2020, 07:01 AM , By : Brian L
Applet MouseMotionListener and Itemlistener conflict?
Applet MouseMotionListener and Itemlistener conflict?
I wish did fix the issue. You can try putting the two listener inside two separeted threads. Here is how to set up a threadWith this methods the two listeners work separatly and at the same time, so they don't block each other.
TAG : java
Date : November 14 2020, 07:01 AM , By : netwii
Java addActionListener error
Java addActionListener error
Hope that helps Quite simply, this is not an ActionListener. Does your class implement the ActionListener interface? The compiler is telling you that it doesn't.i.e., this will work:
TAG : java
Date : November 14 2020, 07:01 AM , By : SelComp
Unexpected outcome with System.out.println
Unexpected outcome with System.out.println
I think the issue was by ths following , Your inputs (file-based and user-based) look reasonable. By the time you reach your if-elseif logic on line 40, you have the following values (all values based on the problem description in the question): load
TAG : java
Date : November 14 2020, 07:01 AM , By : poetinahat
how to remove all zero's from a string's beginning in Java
how to remove all zero's from a string's beginning in Java
hop of those help? I'm trying to get rid of the 0's before the strings. tried using TrimStart method, but it didn't work. If anyone could help, that'd be great. , You can do it with
TAG : java
Date : November 14 2020, 07:01 AM , By : Marco Silva
JSONException: No value for error
JSONException: No value for error
hop of those help? I'm getting the following error: , As the error clearly says,
TAG : java
Date : November 14 2020, 07:01 AM , By : بسكري مقود
Java 8: Simplify and convert code to stream API
Java 8: Simplify and convert code to stream API
wish help you to fix your issue Such questions are more suitable for CodeReview, but ok, I'll answer.First, even in previous Java versions there's no need to create the result list in the loop. The result is actually the same List as the input articl
TAG : java
Date : November 14 2020, 07:01 AM , By : joe
CodeEval Challenge Fizz Buzz
CodeEval Challenge Fizz Buzz
around this issue In case this helps anyone in the future this code doesn't close the scanner. Unfortunately on CodeEval the code doesn't execute if this is the case. Adding scan.close() at the end of main method (after while loop solved) the issue.
TAG : java
Date : November 14 2020, 07:01 AM , By : George
I keep getting this error int cannot be dereferenced
I keep getting this error int cannot be dereferenced
will be helpful for those in need The code is supposed to return the first and the last letter of a string ,but I keep getting these errors Line 5: int cannot be dereferenced and Line 6: int cannot be dereferenced , Not
TAG : java
Date : November 14 2020, 07:01 AM , By : Andrew Ng
Nested GridBagLayout - how to align the child's columns with the parent's columns
Nested GridBagLayout - how to align the child's columns with the parent's columns
help you fix your problem The child contains several fields which are disposed in three columns each (label - editor - label).
TAG : java
Date : November 14 2020, 07:01 AM , By : Lance Kasari
How do I display even and odd numbers based on user input? - java
How do I display even and odd numbers based on user input? - java
like below fixes the issue You have a couple of issues with too many while loops. You don't decrement n anywhere but you also loop on num while it's greater than 0. So it will loop forever if they stick something other than 0 in there.
TAG : java
Date : November 14 2020, 07:01 AM , By : Arsen Mamikonyan
i Have written this membership class, how can i create a method to find a specific ID given to a member?
i Have written this membership class, how can i create a method to find a specific ID given to a member?
I wish this helpful for you To add on Hovercraft's answer with an example.You have your class handling all the members, very basic implementation of it.
TAG : java
Date : November 14 2020, 06:58 AM , By : Volt
How can I use the Permissionsdispatcher library for the new Android M runtime permissions?
How can I use the Permissionsdispatcher library for the new Android M runtime permissions?
may help you . I'm a developer. for your using. Check your IDE's setting whether annotation processing is allowed or not. You said, "which is a fork of the PermissionsDispatcher repo" but what you mean? Forked the repo and run the sample module?
TAG : java
Date : November 14 2020, 06:58 AM , By : Ola Al Azeem
ArrayList shows in red and won't compile --- java android
ArrayList shows in red and won't compile --- java android
To fix the issue you can do The , Change
TAG : java
Date : November 14 2020, 06:58 AM , By : Andrew Webber
replace a vowel in string with its successor example snow will become snpw
replace a vowel in string with its successor example snow will become snpw
fixed the issue. Will look into that further You should not print str which value's never changed.Try to print the StringBuffer's object because it contains the replacements.
TAG : java
Date : November 14 2020, 06:58 AM , By : Bjørnar Eilertsen
Can't add JPanel to BorderLayout.CENTER
Can't add JPanel to BorderLayout.CENTER
wish of those help A BorderLayout is not designed to display multiple components with the same constraint because of the way ZOrder painting works in Swing. If you need the ability to swap panels, then you should be using a CardLayout.
TAG : java
Date : November 14 2020, 06:58 AM , By : Ahmed Alamin
Java Arrays - Where too put Strings? Why doesn't it work?
Java Arrays - Where too put Strings? Why doesn't it work?
hope this fix your issue My program should look like this: , Just for your output:
TAG : java
Date : November 14 2020, 06:58 AM , By : Mike R
Runtime complexity of Collectors#toList
Runtime complexity of Collectors#toList
Does that help In this case the input desc list will be divided to the several independent parts depending on number of hardware threads your system has. Usually it's 16 parts on 4-core system (though it's not specified and may change). Each part wil
TAG : java
Date : November 14 2020, 06:58 AM , By : Obryan Poyser
find all paths under a directory
find all paths under a directory
I think the issue was by ths following , All I need to do is scan a directory (that could be containing sub-directories) and get a list of all the paths contained inside it. , My attempt would be:
TAG : java
Date : November 14 2020, 06:58 AM , By : MB95
JsonArray to Arraylist Conversion
JsonArray to Arraylist Conversion
Hope this helps Internally this JsonArray implements list interface so type casting to List is perfectly fine. Moreover iterating each and every element will access list one by one which will be overhead(Performance impact). If you need alternate way
TAG : java
Date : November 14 2020, 06:58 AM , By : ail ail
Project Euler 24 using java Logical Error
Project Euler 24 using java Logical Error
around this issue So without being able to walk you through the exact numbers I can tell something is off with the way you manage your digits:
TAG : java
Date : November 14 2020, 06:58 AM , By : vojtik69
Regex Matching Differs from Java & Online Tools
Regex Matching Differs from Java & Online Tools
Hope this helps I figured it out, the regex was correct, I was putting it into the incorrect part of the program. Sorry I wasted all of your time! I appreciate the help though.
TAG : java
Date : November 14 2020, 06:58 AM , By : Arnold Nkhumeleni
Display Linked List: Null Pointer Exception Error
Display Linked List: Null Pointer Exception Error
I think the issue was by ths following , Your loop's condition checks that there's at least one element in the list, but then you try to remove 5 elements from the list.You should call removeFront only once in each iteration :
TAG : java
Date : November 14 2020, 06:58 AM , By : Shiva Sampathi
JavaFX attach event listener to circles with color black
JavaFX attach event listener to circles with color black
Any of those help You need to create a reference to the circles when you create them, so you can add the listeners. For example (note: I use Java, not Groovy, so the syntax may not match, however this will give you the idea):
TAG : java
Date : November 14 2020, 06:58 AM , By : michaelfahmy
Custom JpaRepository filter or query
Custom JpaRepository filter or query
like below fixes the issue I am getting all Posts per page with a limit of 10 with use of JpaRepository findAll() function. However, I would like to make a custom function in the Interfce to take only those records which have PostType equals to 2. ,
TAG : java
Date : November 14 2020, 06:58 AM , By : Aqeel Al Shafei
Why the DispatcherServlet xml configuration file is not in the specified directory in this Spring MVC application?
Why the DispatcherServlet xml configuration file is not in the specified directory in this Spring MVC application?
This might help you You do not need to update that XML file directly into the classes folder. If you know whatever there in the src folder will be going to the classes folder by default so if you update your xml file inside your src file development
TAG : java
Date : November 14 2020, 06:58 AM , By : Oleg Kotlyar
JButton changing the color of something back and forth?
JButton changing the color of something back and forth?
should help you out You needed multiple things changed with your code : A third Color object to stock the current Color A way to check if the currentColor is red or green : I used a boolean Remove the y variable.
TAG : java
Date : November 14 2020, 06:58 AM , By : Tim Moore

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