notserializableexception

Java unable to serialize a objects which contain TreeMaps with Comparators

由 让人想犯罪 __ 提交于 2021-02-05 06:48:06
问题 I have as an assignment (for the OOP course from Uni) a pretty large project: a school register, where students can see their grades, teachers can add grades and so on. The "base" class is a singleton which contains all the classes (Java) used, such as an array of users, classes (as in school classes) and a TreeMap that associates classess and teachers to courses. I want to serialize this base class (Central), in order to save the modified data. The problem is that I get this exception java

WebServlet list for logged users [duplicate]

由 时光怂恿深爱的人放手 提交于 2020-03-25 18:48:32
问题 This question already has answers here : Spring - Invalid argument value: java.io.NotSerializableException (6 answers) Closed 12 days ago . I'm trying to create a list of medicines so that the user who added the medicines could see them and only him and that he wouldn't see the medicines of other users. But when I log in on accout which have 2 medicines added to databese and I visit my servlet /mlist i see "No drugs on the list" because to my user_id is assigned 0 and i don't get it why. /

NotSerializableException on saving custom class

由 一曲冷凌霜 提交于 2020-01-04 03:27:09
问题 My two classes are designed too create an array of StudentData objects (name, Date Of Birth, and ID), that include a toString override to print out all variables. It then serializes the array and saves it to a file named studentdata.txt. It should then read the array from the file and reconstruct a new array object from this data, and print out each item in the array to the console. Am getting this error when attempting to complie... Exception in thread "main" java.io.NotSerializableException

NotSerializableException on saving custom class

由 蓝咒 提交于 2020-01-04 03:26:51
问题 My two classes are designed too create an array of StudentData objects (name, Date Of Birth, and ID), that include a toString override to print out all variables. It then serializes the array and saves it to a file named studentdata.txt. It should then read the array from the file and reconstruct a new array object from this data, and print out each item in the array to the console. Am getting this error when attempting to complie... Exception in thread "main" java.io.NotSerializableException

How can I identify an anonymous inner class in a NotSerializableException

由 大兔子大兔子 提交于 2019-12-17 14:48:40
问题 I have received the following error message when trying to debug an application in NetBeans: java.io.WriteAbortedException: writing aborted; java.io.NotSerializableException: board.Board$1 In the course of debugging I have had to insert 'implements Serializable' in a number of classes as the exception arose in the course of reading from a file that stores a large object. This has not been difficult as the class needing attention has been clear from the exception message. What has thrown me is

aparch spark, NotSerializableException: org.apache.hadoop.io.Text

由 大兔子大兔子 提交于 2019-12-11 10:47:57
问题 here is my code: val bg = imageBundleRDD.first() //bg:[Text, BundleWritable] val res= imageBundleRDD.map(data => { val desBundle = colorToGray(bg._2) //lineA:NotSerializableException: org.apache.hadoop.io.Text //val desBundle = colorToGray(data._2) //lineB:everything is ok (data._1, desBundle) }) println(res.count) lineB goes well but lineA shows that: org.apache.spark.SparkException: Job aborted: Task not serializable: java.io.NotSerializableException: org.apache.hadoop.io.Text I try to use

RMI JavaFX 2 - NotSerializableException error

由 旧时模样 提交于 2019-12-06 10:34:36
问题 I'm trying to send objects using Java RMI in a JavaFX 2 project, but when the following code runs it returns a NotSerializableException. My Admin class is Serializable and so is the super class. However it seems the exception is pointing towards the JavaFX SimpleIntegerProperty fields inside the Admin class. I don't know what to do from here as the class being sent via RMI is serializable. Any help much appreciated. ObservableList<Admin> data = null; try { data = FXCollections

RMI JavaFX 2 - NotSerializableException error

由 落爺英雄遲暮 提交于 2019-12-04 16:59:01
I'm trying to send objects using Java RMI in a JavaFX 2 project, but when the following code runs it returns a NotSerializableException. My Admin class is Serializable and so is the super class. However it seems the exception is pointing towards the JavaFX SimpleIntegerProperty fields inside the Admin class. I don't know what to do from here as the class being sent via RMI is serializable. Any help much appreciated. ObservableList<Admin> data = null; try { data = FXCollections.observableArrayList(Main.docServer.getAllAdmins()); } catch (RemoteException e) { e.printStackTrace(); } The error I

java.io.NotSerializableException when @ViewScoped is used

由 流过昼夜 提交于 2019-12-04 07:30:33
If I use @ViewScoped in JSF, then the following exception occurs: java.io.NotSerializableException: com.solv.basics.Basics java.io.ObjectOutputStream.writeObject0(Unknown Source) java.io.ObjectOutputStream.writeObject(Unknown Source) java.util.HashMap.writeObject(Unknown Source) sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) java.lang.reflect.Method.invoke(Unknown Source) java.io.ObjectStreamClass.invokeWriteObject(Unknown Source) java.io.ObjectOutputStream

java.io.NotSerializableException - org.omnifaces.taghandler.Converter

由 安稳与你 提交于 2019-12-02 02:15:52
问题 I have an application using Primefaces 3.5 with Omnifaces 1.5 on Jboss 6, using myfaces 2.1.5 on trying to use the o:converter I am getting the follow error. org.omnifaces.taghandler.Converter viewId=/xhtml/propelModules/initiatePropel.xhtml location=C:\jboss-6.1.0.Final\server\default\deploy\PropelEAR.ear\PropelWeb.war\xhtml\propelModules\initiatePropel.xhtml phaseId=RENDER_RESPONSE(6) Caused by: java.io.NotSerializableException - org.omnifaces.taghandler.Converter at java.io
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