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Questions tagged [classcastexception]

The Java exception thrown to indicate that the code has attempted to cast an object to a subclass of which it is not an instance.

ClassCastException is the Java unchecked exception thrown to indicate that the code has attempted to cast an object to a subclass of which it is not an instance.

FAQ:

  1. Explanation of "ClassCastException" in Java
  2. What else can throw a ClassCastException in java?
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Java Generics Causing Class Cast Error

So I'm coding up a generic adjacency list and my code has no compile errors, but when I run my tests I get the same runtime error across the board: java.lang.ClassCastException: [[Ljava.lang.Object; cannot be cast to [[Lds.Graph.Edge; at…
Ethan
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ClassCastException in BookingApp

I'm getting a ClassCastException at: RVBooking rvbooking = (RVBooking) bookingList.get(iweight); I want to store the user's weightvehicle input and invoke the recordWeight() method. Sorry if i am not explaining this clearly. Thanks in advance.…
Ken
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Init parent class with a Child contstructor in Java, theory

I've just tested this code. Main. public class Main { /** * @param args */ public static void main(String[] args) { Parent parent = new Child(12, "Lorem", 12); if (parent instanceof Parent) { …
Maksim Dmitriev
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Saving file with casting error

java.lang.ClassCastException: infrastructure cannot be cast to terrain at p2_assign_version2.main(p2_assign_version2.java:98) This is the error that is constantly being printed when I try to build my file. Due to this error i m not able to print…
Chua Yee Yin
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ClassCastException ObjectStreamClass cannot be cast to java.lang.String when deserializing

I am trying to serialize, send and receive an instance of the below class ( ServerGameDataObject object = new ServerGameDataObject() ) public class ServerGameDataObject implements Serializable { private static final long serialVersionUID =…
user1386187
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ClassCastException when persisting enum via Hibernate

I've now wasted several hours trying to get this to work, but Hibernate still keeps me wondering what's going on there inside. Here's what I want to do: Simply persist a List of enums via @Enumerated which looks like…
Zhedar
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java.lang.ClassCastException: android.widget.TextView ERROR

I am getting a ClassCastException error. I don't know why. Tried to clean my project, but nothing happened. Thanks in advance! logcat: 04-30 18:03:44.122: W/dalvikvm(276): threadid=1: thread exiting with uncaught exception (group=0x4001d800) 04-30…
user2336061
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Android removing TitleBar for Activity causes ClassCastException. Why?

I'm getting a ClassCastException on the following line: content = ((LinearLayout) findViewById(android.R.id.content).getParent()); This is only when I set the theme of the Activity/App as android:Theme.NoTitleBar Same problem with Fullscreen…
JabezMMM
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ClassCastException on SimpleAdapter in Android

I am trying to display a list of alarms in my Android application but I am getting an Exception. How can I resolve this? This is where I am trying I initialise the adapter: List list; Database db = new…
Johnathan Au
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Truncated Java object when passing through JAX-WS WebService

I am currently working on a project that uses JAX-WS webservices in Java. The global topic is this : the user creates locally an object, let's say an Agent. He calls a first webservice and passes its Agent to the webservice. The webservice treats…
David Ferrand
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java.lang.ClassCastException: java.util.ArrayList cannot be cast to ....CrExcessMaster

My code is private List find(String queryString) { final Query query = getSession().createQuery(queryString.intern()); List resultSet = query.list(); return resultSet; } @SuppressWarnings("rawtypes") public List < CrExcessMaster >…
user2265200
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ClassCastException - related to JSON parsing, came out of nowhere

My app was seemingly running fine for a while now, when all of a sudden I started getting a ClassCastException when running a portion of the app that runs a query via REST API. I have no idea where it came from or why it cropped up now, as it was…
user2163853
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ClassCastException error, dont know why it occurs

I m working with BaseAdapter class and i get an ClassCastException error in getView method when i try to cast my viewHolder class. Here is my code: public View getView(int position, View convertView, ViewGroup parent){ // TODO…
Ainius
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Finding median of variable type of arguments

I have a method which takes variable number and types of arguments in the form of Object. I want to calculate the median of only the numbers in those arguments. I used Lists to insert the elements(numbers) and then Collections to sort the List. I…
Parijat Bose
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NetBeans Maven: ClassCastException - RestEasy vs Jersey

As my title says, I believe the issue is with classloading, and the fact that my application is trying to cast a jersey-core class to resteasy. Below is the code that triggers it, as well as the error: java.lang.LinkageError: ClassCastException:…
Metal Wing
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