What is a NullPointerException, and how do I fix it?
This question’s answers are a community effort. Edit existing answers to improve this post. It is not currently accepting new answers or interactions. What are Null Pointer Exceptions (java.lang.NullPointerException) and what causes them? What methods/tools can be used to determine the cause so that you stop the exception from causing the program to terminate prematurely? […]
What is a NullPointerException, and how do I fix it?
This question’s answers are a community effort. Edit existing answers to improve this post. It is not currently accepting new answers or interactions. What are Null Pointer Exceptions (java.lang.NullPointerException) and what causes them? What methods/tools can be used to determine the cause so that you stop the exception from causing the program to terminate prematurely? […]
What is a NullPointerException, and how do I fix it?
This question’s answers are a community effort. Edit existing answers to improve this post. It is not currently accepting new answers or interactions. What are Null Pointer Exceptions (java.lang.NullPointerException) and what causes them? What methods/tools can be used to determine the cause so that you stop the exception from causing the program to terminate prematurely? […]
What is a NullPointerException, and how do I fix it?
This question’s answers are a community effort. Edit existing answers to improve this post. It is not currently accepting new answers or interactions. What are Null Pointer Exceptions (java.lang.NullPointerException) and what causes them? What methods/tools can be used to determine the cause so that you stop the exception from causing the program to terminate prematurely? […]
What is a NullPointerException, and how do I fix it?
This question’s answers are a community effort. Edit existing answers to improve this post. It is not currently accepting new answers or interactions. What are Null Pointer Exceptions (java.lang.NullPointerException) and what causes them? What methods/tools can be used to determine the cause so that you stop the exception from causing the program to terminate prematurely? […]
What is a NullPointerException, and how do I fix it?
This question’s answers are a community effort. Edit existing answers to improve this post. It is not currently accepting new answers or interactions. What are Null Pointer Exceptions (java.lang.NullPointerException) and what causes them? What methods/tools can be used to determine the cause so that you stop the exception from causing the program to terminate prematurely? […]
What is a NullPointerException, and how do I fix it?
This question’s answers are a community effort. Edit existing answers to improve this post. It is not currently accepting new answers or interactions. What are Null Pointer Exceptions (java.lang.NullPointerException) and what causes them? What methods/tools can be used to determine the cause so that you stop the exception from causing the program to terminate prematurely? […]
Null point exception when calling the controller
viewAllButton.setOnAction(event -> {
try {
FXMLLoader loader = new FXMLLoader(getClass().getResource(“search_results.fxml”));
Parent searchResultsRoot = loader.load();
Why is the value returned by this Map null?
I have a program that asks the user 10 political questions and determines which party they belong to with probability calculations based off previous survey answers stored in txt files.
Whenever I run this right after I enter an answer for the first question, I get an exception that says the return value of “java.util.Map.get(Object)” is null.
What is a NullPointerException, and how do I fix it?
This question’s answers are a community effort. Edit existing answers to improve this post. It is not currently accepting new answers or interactions. What are Null Pointer Exceptions (java.lang.NullPointerException) and what causes them? What methods/tools can be used to determine the cause so that you stop the exception from causing the program to terminate prematurely? […]