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JAVA QUESTIONS

Can't figure out how to fix my code
Can't figure out how to fix my code
around this issue You could check valid input (ie, a string with length = 0) and return false before you ever try the loop. You're correct, though, it's not entering the loop and just returning true.--edit-- Something like
TAG : java
Date : November 14 2020, 06:58 AM , By : kjfjgj5ri5h
How Do I Compile/Run a java program from a Java Program (Input failure?)
How Do I Compile/Run a java program from a Java Program (Input failure?)
wish helps you Your main issue is understanding input and output streams.Every process has three standard streams: standard input, standard output and standard error.
TAG : java
Date : November 14 2020, 06:58 AM , By : Bob Thorman
Trying to process different scenarios in Service
Trying to process different scenarios in Service
I wish this help you First of all, you should never instantiate an activity by yourself. Second, as a best practice, your service shouldn't know about your activity, or that it has an edit text. Instead you should send the URL to load inside your int
TAG : java
Date : November 13 2020, 09:01 AM , By : Carlos
Java ternary operator precedence ? Different outputs given
Java ternary operator precedence ? Different outputs given
wish helps you I have the below code producing this output (no space after -1) ==> "1 3 -14 -15 -1" , Here
TAG : java
Date : November 13 2020, 09:01 AM , By : aaron greene
Adding button on ActivityResult when using fragments Android
Adding button on ActivityResult when using fragments Android
Hope this helps I am making an app, that will have FragmentsActivity and after clicking on Floating Action Button making a simple button on the screen. How I should implement something like that. Now I have got this: , You don't use onActivityResult(
TAG : java
Date : November 13 2020, 09:01 AM , By : Nick Green
2D array using scanner, input ; Name Age Gender and to find the Oldest Person
2D array using scanner, input ; Name Age Gender and to find the Oldest Person
around this issue You Should create a Person class which will have properties like age, name, gender and should implement Comparable interface.Person class
TAG : java
Date : November 13 2020, 09:01 AM , By : Charleen Mphephu
How to kill a thread that is waiting on synchronized resource?
How to kill a thread that is waiting on synchronized resource?
hop of those help? You can call notify or notifyAll on the resource the thread is waiting on. This will tell the thread that the resource is "ready" and to continue with its work. Notice that the thread still can only continue when the lock on the re
TAG : java
Date : November 13 2020, 09:01 AM , By : Ricardo F jricar9
How to pass data from Java to FXML?
How to pass data from Java to FXML?
around this issue You give the controller access to the UI elements defined in the FXML by injection. Specifically, in the FXML, give the UI element a fx:id attribute:
TAG : java
Date : November 13 2020, 09:01 AM , By : 0x535431
Big O notation of just a return statement?
Big O notation of just a return statement?
will help you Am I right in saying that the time complexity in big O notation would just be O(1)?
TAG : java
Date : November 13 2020, 09:01 AM , By : Parastoo
JTable in JPanel Not Displaying
JTable in JPanel Not Displaying
should help you out I don't understand where is the problem. The JTable is embedded in a JScrollPanel which is embedded in a JPanel. The table is not displaying. Any help appreciated. I probably missed to add some elements. Checked thoroughly but can
TAG : java
Date : November 13 2020, 09:01 AM , By : naveen chitragar
Integration of Fortran code with Java by JNI
Integration of Fortran code with Java by JNI
Hope that helps A couple of things: For the build of the C object, you should not specify -shared. You are not generating an independent library. Instead, use -c to compile the object:
TAG : java
Date : November 13 2020, 09:01 AM , By : Joe Bundy
Deserialize List of base classes to derived ones using Gson
Deserialize List of base classes to derived ones using Gson
I wish this helpful for you I've created a fast solution, which is close to the one I was looking for (I'm not a Java guy, so I'm sorry if it hurts your brain, feel free to comment advices).Data classes:
TAG : java
Date : November 13 2020, 09:01 AM , By : Tune
Graph can not be resolved to a type eclipse error
Graph can not be resolved to a type eclipse error
I wish this help you In the line Graph theGraph = new Graph(); it cannot be saying "graph can nt be resolved to a type". It must be saying "Graph cannot be resolved to a type". So, welcome to Java programming; lesson 1: lower case letters vs. upper c
TAG : java
Date : November 13 2020, 09:01 AM , By : MartijnC80
Purpose of Virtual width/height in libgdx java
Purpose of Virtual width/height in libgdx java
Any of those help First go through this article by Xoppa, it should clear your basics. But just to understand by an example. Say you have a screen of width height = 1980x1020px. Now in your game, you hardcode your character size be 100px which looks
TAG : java
Date : November 13 2020, 09:01 AM , By : Alex redler
How can I add the missing bits to my binary values?
How can I add the missing bits to my binary values?
wish of those help You can pad it with zero when it is less than 128 using String.format method
TAG : java
Date : November 13 2020, 09:01 AM , By : kevina88
Class mypack.pages.User has been transformed and may not be directly instantiated
Class mypack.pages.User has been transformed and may not be directly instantiated
I hope this helps . You are getting the error because mypack.pages is a T5 controlled package. Move your User class to a different package, e.g. to mypack.entities. More info at Component Classes, specifically the Component Packages section.
TAG : java
Date : November 13 2020, 09:01 AM , By : Nick Anderson
Android - Custom Listview for a pubnub based chat
Android - Custom Listview for a pubnub based chat
it should still fix some issue I'm building an Android app that uses pubnub to allow users to chat to eachother. Usernames and chat channels are set up via Parse and I've managed to get the publish and subscribe part of the chat working. The next par
TAG : java
Date : November 13 2020, 09:01 AM , By : لية نخبي اسررنا
java.lang.NoSuchMethodError: org.springframework.beans.support.ResourceEditorRegistrar.<init>
java.lang.NoSuchMethodError: org.springframework.beans.support.ResourceEditorRegistrar.<init>
With these it helps The maven dependency to struts2-spring-plugin : 2.3.24.1 includes a dependency on spring-web : 3.0.5.RELEASE which includes in turn a dependency on spring-beans : 3.0.5.RELEASE.So, spring-beans : 3.0.5.RELEASE was the reference us
TAG : java
Date : November 13 2020, 09:01 AM , By : j.smith
java loop runs more than expected
java loop runs more than expected
help you fix your problem As already stated, you can either have a while-loop or a recursion. As well as the result of rest(r) isn't ever returned. So it's doing a useless recursion with no used result and the while-loop on the first level returns e
TAG : java
Date : November 13 2020, 09:01 AM , By : Moon06
How do I calculate the Average marks?
How do I calculate the Average marks?
may help you . In addition to counts for each range, you need to keep total of all grades and total count (or just add individual range totals)
TAG : java
Date : November 13 2020, 09:01 AM , By : efrain jimenez
How can I read every letter from the file?
How can I read every letter from the file?
hope this fix your issue I have this part of code. I can read all lines from the code. But I want take (read) every letter separately and put it into array. How can I do it? For Example: In file are numbers 00010 and I want put it into array like thi
TAG : java
Date : November 13 2020, 09:01 AM , By : hari krishna
IOException, must be caught or declared to be thrown
IOException, must be caught or declared to be thrown
this one helps. This code is from the below link. I tried to run it but got the following error: , The close methods can throw an exception. So they need to catch them.
TAG : java
Date : November 13 2020, 05:43 AM , By : Simon Edwards
JPanel doesn't react to MouseEvents?
JPanel doesn't react to MouseEvents?
wish help you to fix your issue When you add/remove components at runtime, always call revalidate() afterwards. revalidate() makes the component refresh/relayout.So just call revalidate() after you add the label and it will work.
TAG : java
Date : November 13 2020, 05:43 AM , By : Abu Bakar
How can I use classes from other project with maven? (ClassNotFoundException and NoClassDefFoundError is thrown)
How can I use classes from other project with maven? (ClassNotFoundException and NoClassDefFoundError is thrown)
hope this fix your issue can u try to remove war from B? Maven's default packaging is jar, and this is what you need for B.Plus, add B to the dependencies of A.
TAG : java
Date : November 13 2020, 05:43 AM , By : Felipe Leal
javafx.scene.paint.Color#darker() not same as java.awt.Color#darker()
javafx.scene.paint.Color#darker() not same as java.awt.Color#darker()
This might help you JavaFX: javafx.scene.paint.Colordarker creates new javafx.scene.paint.Color object based on parent color with adding hue, saturation, brightness and opacity (private static final double DARKER_BRIGHTER_FACTOR = 0.7;). AWT: java.aw
TAG : java
Date : November 13 2020, 05:43 AM , By : Omry Cohen
Checking if String has digits in it
Checking if String has digits in it
hop of those help? A very simple way to check whether or not a String has digits in it, is to remove all the digits from the String, and then check whether or not the resulting String is still the same length.
TAG : java
Date : November 13 2020, 05:43 AM , By : Kirill Vasiliev
how to make number running from 60 to 0 and print on textview in android studio
how to make number running from 60 to 0 and print on textview in android studio
around this issue , Initialize your TextView in onCreate() first:
TAG : java
Date : November 13 2020, 05:43 AM , By : Safwat Zaky
How to compare two arrays of different sizes?
How to compare two arrays of different sizes?
seems to work fine Judging by the picture, you are not placing the values in the correct index in the second array, or you are not matching the correct ones.If you want it to look exactly like in the picture, the second array should be declared:
TAG : java
Date : November 13 2020, 05:43 AM , By : Joe Batzer
Returning array indexes in a Collection while using Stream
Returning array indexes in a Collection while using Stream
With these it helps This is the first time I am trying to use the new Stream API in Java 1.8 and I have to admit that I have some problem understanding it... , You should box your IntStream into a Stream :
TAG : java
Date : November 13 2020, 05:43 AM , By : Happy
10x10 Two dimensional array and search minimum, maximum value and its index location
10x10 Two dimensional array and search minimum, maximum value and its index location
around this issue
TAG : java
Date : November 13 2020, 05:43 AM , By : Jerry
Put name into a list on the same HTML file with servlet
Put name into a list on the same HTML file with servlet
wish help you to fix your issue Your page is too static for what you want to do. I am assuming that you are doing this for practice.What you are doing is
TAG : java
Date : November 13 2020, 05:43 AM , By : Stuart Chalk
How do you stop "painting"?
How do you stop "painting"?
it helps some times I'm working on a piece of code which randomly puts circles across the screens for my game(simply put). I have no error in the code but I've got into a problem where it wants to write more paint code but I want to type more, here i
TAG : java
Date : November 13 2020, 05:43 AM , By : PUJITHA RAYUDU
GAE: defaultDeadline is an unrecognized element
GAE: defaultDeadline is an unrecognized element
hope this fix your issue I believe there is a bug in the docs, and what you should use is instead
TAG : java
Date : November 13 2020, 05:43 AM , By : Mike King
Hibernate with use of 2 foreign keys pointing to the same object causing serialization issues
Hibernate with use of 2 foreign keys pointing to the same object causing serialization issues
hope this fix your issue Looks like one of your Post objects has a parentPost that in its turn has a reference back to the Post object through an aceptedAnswer property. In this situation when the marshaller does its job it has no point to stop, beca
TAG : java
Date : November 13 2020, 05:43 AM , By : Thomas
binary search tree class - remove, search, insert, remove, and iterator methods - iteration vs recursion
binary search tree class - remove, search, insert, remove, and iterator methods - iteration vs recursion
this will help The basic idea of recursion is to apply a function to each smaller problem and return the results back up the call stack. For example, in terms of trees, the contains/search method is the result of checking the current node's data, OR
TAG : java
Date : November 13 2020, 05:43 AM , By : Peng
Java Programmer's Calculator (initialization in if statement)
Java Programmer's Calculator (initialization in if statement)
this will help actionperformed() is called for every button press in your calculator. make prev as a global variable and use it else you it will be reinitialized as you mentioned.
TAG : java
Date : November 13 2020, 05:43 AM , By : Niks Doro
How to force renaming of variable names in eclipse mars
How to force renaming of variable names in eclipse mars
Hope that helps Compilers issue two kinds of errors: syntax errors and all other kinds of errors, like "type mismatch" and "symbol not found". Eclipse complains about a syntax error. Are you sure that in previous occasions when Eclipse agreed to refa
TAG : java
Date : November 13 2020, 05:43 AM , By : Thomas Webqam
How to set custom week-start in JCalendar?
How to set custom week-start in JCalendar?
hope this fix your issue To achieve the functionality I needed with com.toedter.calendar.JDateChooser I had to extend it. First a demo: set Sunday as the first day of the week (although it is set to Monday by the locale) . The test class:
TAG : java
Date : November 13 2020, 05:43 AM , By : inithyn
How to create a JAR file to create a large neverending file
How to create a JAR file to create a large neverending file
it helps some times I want to know how do I create a jar that will write to a .txt or generate a huge file once executed. It will either generate a huge file or keep writing to a file as fast as possible to bloat up the storage. The main point is to
TAG : java
Date : November 13 2020, 05:43 AM , By : Mahima Choudhary
Java Regex pattern to match String from all languages that end with a whitespace
Java Regex pattern to match String from all languages that end with a whitespace
may help you . If you do not care about digits, just add a (?U) flag before the pattern:
TAG : java
Date : November 13 2020, 05:40 AM , By : senolfiliz
Formating java Date with java.time.DateTimeFormatter including time offset
Formating java Date with java.time.DateTimeFormatter including time offset
wish helps you I am currently struggling to refactor this piece of old code to use the new java.time.format.DateTimeFormatter because it is used in our main logging component where this creates unnecessary garbage.
TAG : java
Date : November 13 2020, 05:40 AM , By : Marion
Java - Get instances of abstract class by <class ? extends SuperClass> with parameters
Java - Get instances of abstract class by <class ? extends SuperClass> with parameters
this one helps. You don't need Car.class because you already specified the type in your enum constructor. By the way, don't call it instance, call it type.Here we go:
TAG : java
Date : November 13 2020, 05:40 AM , By : Guadalupe Pérez
Java 8 - Count of words and then arrange in desc order
Java 8 - Count of words and then arrange in desc order
it fixes the issue The most difficult part is the sorting. Since you want to keep only the 7 first elements from the result and you want to sort the Map by its values, we need to create a Map of all the result, sort it and then keep the 7 results.In
TAG : java
Date : November 13 2020, 05:40 AM , By : Mark S.
flink - cluster not using cluster
flink - cluster not using cluster
wish help you to fix your issue The problem is that you are building a global window on an unkeyed (ungrouped) stream, so the window has to run on one machine.Maybe you can also express your application logic differently so that you can group the str
TAG : java
Date : November 13 2020, 05:40 AM , By : SohamHck
Edit %PATH% programmatically
Edit %PATH% programmatically
like below fixes the issue Use Runtime.getRuntime().exec(String[] cmdarray, String[] envp).You can put anything you want in envp
TAG : java
Date : November 13 2020, 05:40 AM , By : Cory
Android advice on creating new Layout in Activity and dynamically changing items inside Layout
Android advice on creating new Layout in Activity and dynamically changing items inside Layout
wish help you to fix your issue When the button is clicked I want to open a new Activity so I can use the Integer number and the ArrayList but I will lose them if I go to a new Activity.
TAG : java
Date : November 13 2020, 05:40 AM , By : Manny
JavaFX WebView won't load localhost website
JavaFX WebView won't load localhost website
this one helps. Changing t.sendResponseHeaders(200, response.length()); to t.sendResponseHeaders(200, 0); seemed to fix the problem for me.
TAG : java
Date : November 13 2020, 05:40 AM , By : Preeti Vyas
Spring MVC - Error instantiating servlet class
Spring MVC - Error instantiating servlet class
it helps some times I am trying to learn Spring MVC and have gotten into some problems. I suppose there is something wrong either in my web.xml or servlet-config.xml files. When I type localhost:8080/FitnessTracker/greeting.html I get the following e
TAG : java
Date : November 13 2020, 05:40 AM , By : ipablos
How to deploy JavaEE 7 / JPA 2.1 Dynamic Web Application to IBM Liberty Profile WITHOUT web.xml
How to deploy JavaEE 7 / JPA 2.1 Dynamic Web Application to IBM Liberty Profile WITHOUT web.xml
wish of those help The first result on google for "websphere liberty hibernate" gave me the link to a sample app that uses Liberty with Hibernate.WASdev Liberty + Hibernate sample
TAG : java
Date : November 13 2020, 05:40 AM , By : Melvin Croonenborghs
Anonymous classes with lambdas in Kotlin
Anonymous classes with lambdas in Kotlin
Does that help OK, so here are the quick fixes:For your first question: please remove the "internal" pair of brackets from your lambda. Now your code returns not ArrayList(), but a function that returns the list (when invoked)
TAG : java
Date : November 13 2020, 05:40 AM , By : Nyom Kal
String split single quotes
String split single quotes
This might help you iam new in regural expressions. I have a String , You can do this using regular expression:
TAG : java
Date : November 13 2020, 05:40 AM , By : Oscar Mendez
Printing rhomboid using scanner in eclipse
Printing rhomboid using scanner in eclipse
may help you . So your code will just print 1D output.. Output:- *****So, to solve this you need two loops one for row and column.Now a little modification in 2D printing for rhombus is, first now there must be gap of 4 spaces before printing,it can
TAG : java
Date : November 13 2020, 05:40 AM , By : Shawn Nani
How to get an XML Tag belonging to another tag with specific attribute in Java?
How to get an XML Tag belonging to another tag with specific attribute in Java?
I hope this helps . You can use the following XPath expression to find student element having rollno attribute equals 393 and then return the corresponding marks child element :
TAG : java
Date : November 13 2020, 05:40 AM , By : Andrea Valenza
Hibernate OneToOne relation of the same entity on Foreign key annotation
Hibernate OneToOne relation of the same entity on Foreign key annotation
This might help you I have an entity class called Post. That class has field called ParentId. That is a Foreign key of the same entity class. , You also need to reference where ParentId is pointing to:
TAG : java
Date : November 13 2020, 05:40 AM , By : Vladislav Shipilov
Bottom AlertDialouge android
Bottom AlertDialouge android
To fix the issue you can do I have a view which i want to show bottom of the MainLayout. When i set the theme as AlertDialouge it always show center of the screen. is it possible to make it's position manually? , Try
TAG : java
Date : November 13 2020, 05:40 AM , By : Andrew Smith
SQL Update Statement With conditions
SQL Update Statement With conditions
I wish this helpful for you As Column_name ,New_value and Condition are variable, They must be concatenated properly otherwise they will be treated as String and not variables.Use this,
TAG : java
Date : November 13 2020, 05:40 AM , By : Shaveta
How to access/change a variable in the initialization? JAVA
How to access/change a variable in the initialization? JAVA
wish helps you You're main problem: Don't use an anonymous inner class if you want to give the class new mutable fields. Instead, create a separate class, it can be an inner class, but it can't be anonymous, give it fields that are needed with getter
TAG : java
Date : November 13 2020, 05:40 AM , By : denisse og
java.lang.Exception.file not created properly
java.lang.Exception.file not created properly
wish help you to fix your issue I have written the following code : , pin is an array of size 8
TAG : java
Date : November 13 2020, 05:40 AM , By : Mark Joel Pedley
Spring Asynchronous REST with DeferredResult and Reactor
Spring Asynchronous REST with DeferredResult and Reactor
seems to work fine Have a look at EventBus.sendAndReceive(), it is exactly made for this kind of use cases. Example from http://projectreactor.io/docs/reference/bus-request-reply:
TAG : java
Date : November 13 2020, 05:40 AM , By : gecoute
Find node neighbors in 2d array
Find node neighbors in 2d array
may help you . Assume that I have the following (n * n) array:
TAG : java
Date : November 13 2020, 05:40 AM , By : Lars Iversen

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