exception in initializer error in java when using Netbeans

Question

I am using Netbeans   I did some things with bindings and now whenever I start my program  before it even initializes the form  it gives me an error The exception in thread main is occuring before the form is even an initialized object yet   The form is not even an object yet   Every line in my main   causes an exception   Random stuff    I don t understand it at all  Here is the error      Exception in thread  quot main quot  java lang ExceptionInInitializerError         at obd2ner main obd2ner java 26  Caused by  java lang ClassCastException         at java lang Class cast Class java 2990          at org jdesktop beansbinding Binding convertForward Binding java 1312          at org jdesktop beansbinding Binding getSourceValueForTarget Binding java 844          at org jdesktop beansbinding Binding refreshUnmanaged Binding java 1222          at org jdesktop beansbinding Binding refresh Binding java 1207          at org jdesktop beansbinding AutoBinding tryRefreshThenSave AutoBinding java 162          at org jdesktop beansbinding AutoBinding bindImpl AutoBinding java 199          at org jdesktop beansbinding Binding bindUnmanaged Binding java 959          at org jdesktop beansbinding Binding bind Binding java 944          at org jdesktop beansbinding BindingGroup bind BindingGroup java 143          at OBD2nerForm initComponents OBD2nerForm java 731          at OBD2nerForm  lt init gt  OBD2nerForm java 75          at Status  lt clinit gt  Status java 41              1 more Java Result  1  OBD2nerForm line 731 is bindingGroup bind    sometimes it errors out on pack    the exception in main   does not even seem relevant because it occurs as soon as the program is run and every time I comment out a line it jumps to the next         public void actionPerformed ActionEvent evt                jFormattedTextField2ActionPerformed evt                          jLabel8 setText  quot Data In Que  quot         jLabel9 setFont new Font  quot DejaVu Sans quot   0  14        jLabel9 setText  quot FFFFFFFFFFFFFFFFFFFF quot         GroupLayout jPanel5Layout   new GroupLayout jPanel5       jPanel5 setLayout jPanel5Layout       jPanel5Layout setHorizontalGroup          jPanel5Layout createParallelGroup GroupLayout LEADING           add jPanel5Layout createSequentialGroup                add jPanel5Layout createParallelGroup GroupLayout LEADING                   add jPanel5Layout createSequentialGroup                        add 19  19  19                       add jPanel5Layout createParallelGroup GroupLayout TRAILING                           add jLabel7                           add jLabel5                           add jLabel6                        add 18  18  18                       add jPanel5Layout createParallelGroup GroupLayout LEADING                           add GroupLayout TRAILING  jFormattedTextField1  GroupLayout PREFERRED SIZE  22  GroupLayout PREFERRED SIZE                           add GroupLayout TRAILING  jCheckBox1                           add GroupLayout TRAILING  jCheckBox11                        addPreferredGap LayoutStyle RELATED                       add jPanel5Layout createParallelGroup GroupLayout TRAILING                           add jFormattedTextField2  GroupLayout PREFERRED SIZE  22  GroupLayout PREFERRED SIZE                           add jCheckBox12                           add jCheckBox2                        addPreferredGap LayoutStyle RELATED                       add jPanel5Layout createParallelGroup GroupLayout TRAILING                           add jFormattedTextField3  GroupLayout PREFERRED SIZE  22  GroupLayout PREFERRED SIZE                           add jCheckBox13                           add jCheckBox3                        addPreferredGap LayoutStyle RELATED                       add jPanel5Layout createParallelGroup GroupLayout TRAILING                           add jFormattedTextField4  GroupLayout PREFERRED SIZE  22  GroupLayout PREFERRED SIZE                           add jCheckBox14                           add jCheckBox4                        addPreferredGap LayoutStyle RELATED                       add jPanel5Layout createParallelGroup GroupLayout TRAILING                           add jFormattedTextField5  GroupLayout PREFERRED SIZE  22  GroupLayout PREFERRED SIZE                           add jCheckBox15                           add jCheckBox5                        addPreferredGap LayoutStyle RELATED                       add jPanel5Layout createParallelGroup GroupLayout TRAILING                           add jFormattedTextField6  GroupLayout PREFERRED SIZE  22  GroupLayout PREFERRED SIZE                           add jCheckBox16                           add jCheckBox6                        addPreferredGap LayoutStyle RELATED                       add jPanel5Layout createParallelGroup GroupLayout TRAILING                           add jFormattedTextField7  GroupLayout PREFERRED SIZE  22  GroupLayout PREFERRED SIZE                           add jCheckBox17                           add jCheckBox7                        addPreferredGap LayoutStyle RELATED                       add jPanel5Layout createParallelGroup GroupLayout TRAILING                           add jFormattedTextField8  GroupLayout PREFERRED SIZE  22  GroupLayout PREFERRED SIZE                           add jCheckBox18                           add jCheckBox8                        addPreferredGap LayoutStyle RELATED                       add jPanel5Layout createParallelGroup GroupLayout LEADING                           add GroupLayout TRAILING  jFormattedTextField9  GroupLayout PREFERRED SIZE  22  GroupLayout PREFERRED SIZE                           add GroupLayout TRAILING  jCheckBox19                           add GroupLayout TRAILING  jCheckBox9                        addPreferredGap LayoutStyle RELATED                       add jPanel5Layout createParallelGroup GroupLayout LEADING                           add jCheckBox20                           add jCheckBox10                           add jFormattedTextField10  GroupLayout PREFERRED SIZE  22  GroupLayout PREFERRED SIZE                     add jPanel5Layout createSequentialGroup                        add 4  4  4                       add jPanel5Layout createParallelGroup GroupLayout LEADING                           add jPanel5Layout createSequentialGroup                                add jLabel8                               addPreferredGap LayoutStyle RELATED                               add jLabel9  GroupLayout PREFERRED SIZE  256  GroupLayout PREFERRED SIZE                            add jSeparator1  GroupLayout PREFERRED SIZE  474  GroupLayout PREFERRED SIZE                  addContainerGap GroupLayout DEFAULT SIZE  Short MAX VALUE            add GroupLayout TRAILING  jPanel5Layout createSequentialGroup                addContainerGap 346  Short MAX VALUE               add jToggleButton3  GroupLayout PREFERRED SIZE  132  GroupLayout PREFERRED SIZE               addContainerGap               jPanel5Layout setVerticalGroup          jPanel5Layout createParallelGroup GroupLayout LEADING           add jPanel5Layout createSequentialGroup                addContainerGap                add jPanel5Layout createParallelGroup GroupLayout BASELINE                   add jLabel5                   add jFormattedTextField1  GroupLayout PREFERRED SIZE  GroupLayout DEFAULT SIZE  GroupLayout PREFERRED SIZE                   add jFormattedTextField2  GroupLayout PREFERRED SIZE  GroupLayout DEFAULT SIZE  GroupLayout PREFERRED SIZE                   add jFormattedTextField3  GroupLayout PREFERRED SIZE  GroupLayout DEFAULT SIZE  GroupLayout PREFERRED SIZE                   add jFormattedTextField4  GroupLayout PREFERRED SIZE  GroupLayout DEFAULT SIZE  GroupLayout PREFERRED SIZE                   add jFormattedTextField5  GroupLayout PREFERRED SIZE  GroupLayout DEFAULT SIZE  GroupLayout PREFERRED SIZE                   add jFormattedTextField6  GroupLayout PREFERRED SIZE  GroupLayout DEFAULT SIZE  GroupLayout PREFERRED SIZE                   add jFormattedTextField7  GroupLayout PREFERRED SIZE  GroupLayout DEFAULT SIZE  GroupLayout PREFERRED SIZE                   add jFormattedTextField8  GroupLayout PREFERRED SIZE  GroupLayout DEFAULT SIZE  GroupLayout PREFERRED SIZE                   add jFormattedTextField9  GroupLayout PREFERRED SIZE  GroupLayout DEFAULT SIZE  GroupLayout PREFERRED SIZE                   add jFormattedTextField10  GroupLayout PREFERRED SIZE  GroupLayout DEFAULT SIZE  GroupLayout PREFERRED SIZE                addPreferredGap LayoutStyle RELATED               add jSeparator1  GroupLayout PREFERRED SIZE  0  GroupLayout PREFERRED SIZE               addPreferredGap LayoutStyle RELATED               add jPanel5Layout createParallelGroup GroupLayout LEADING                   add jCheckBox3                   add jCheckBox1                   add jCheckBox2                   add jCheckBox4                   add jCheckBox5                   add jCheckBox6                   add jCheckBox7                   add jCheckBox8                   add jCheckBox9                   add jLabel6                   add jCheckBox10                addPreferredGap LayoutStyle RELATED               add jPanel5Layout createParallelGroup GroupLayout TRAILING                   add jPanel5Layout createParallelGroup GroupLayout LEADING                       add jLabel7                       add jPanel5Layout createParallelGroup GroupLayout TRAILING                           add jCheckBox13                           add jCheckBox12                           add jCheckBox11                           add jCheckBox14                           add jCheckBox15                           add jCheckBox16                           add jCheckBox17                           add jCheckBox18                           add jCheckBox19                     add jCheckBox20                addPreferredGap LayoutStyle RELATED  42  Short MAX VALUE               add jPanel5Layout createParallelGroup GroupLayout BASELINE                   add jToggleButton3                   add jLabel8                   add jLabel9                addContainerGap                jTabbedPane1 addTab  quot tab6 quot   jPanel5        add jTabbedPane1  BorderLayout CENTER        bindingGroup bind         pack         lt  editor-fold gt          Help  I do not understand  What information do you need from me  Edit  It seems to all be code which I cannot touch   I should probably add that this started with Netbeans adding about 200 invalid imports import jCheckbox1 which I deleted

User · Answer

Retrofit have recently updated to 2 7 1 version  After that Android 4 x clients have crashed  See https   stackoverflow com a 60071876 2914140   Downgrade Retrofit to 2 6 4

User · Answer

Make sure the project does not have any errors  Delete the project from workspace make the workspace a different directory from the git folder  and import again

User · Answer

I found that I had bound jFormattedCheckBox1 foreground to jCheckBox1   selected       this was the problem    Thank you for your help  It seems that a color should not be able to be bound to a boolean   I guess bindings are an advanced feature  I found the problem by deleting all of the controls  then running  then undoing and then deleting one at a time  When I found the offending control  I examined the properties

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You get an ExceptionInInitializerError if something goes wrong in the static initializer block   class C     static             if something does wrong - gt  ExceptionInInitializerError         Because static variables are initialized in static blocks there are a source of these errors too  An example   class C     static int v   D foo            class C     static int v     static         v   D foo            So if foo   goes wild  you get a ExceptionInInitializerError

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Wherever there is errors or exceptions in static blocks  this exception will be thrown  To get the cause of this exception simply use Throwable getCause   to know what is wrong

User · Answer

I got same error and it was due to older Lombok version  Check and update your Lombok version  Changes in Lombok  v1 18 4 - Many improvements for lombok s JDK10 11 support

User · Answer

Hope this helps     class SomeClass      Code snippet here        Code snippet 1  Absolutely OK - all checked exceptions handled  static void m1            try              throw new Exception              catch Exception e               System out println e               static          m1        Code snippet 2  Won t compile - unreported checked exception  static void m1   throws Exception          throw new Exception      static          m1        Code snippet 3  OK  see code snippet 1   static void m1   throws Exception          throw new Exception      static          try m1             catch Exception e               System out println e                 or whatever               Code snippet 4  Compilation error  initilalizer must be able to complete normally  static          throw new RuntimeException        Basically it boils down to this    Inside the static block  every checked exception MUST have a handler  If a RuntimeException were to occur  it would be wrapped in ExceptionInInitializerError and then the latter would be thrown    This makes sense as A CLASS SHOULD BE ABLE TO COMPLETE INITIALIZATION NORMALLY  If this happens to be a problem  this should be categorized as an Error  from which recovery is usually difficult or impossible  rather than an Exception  which is usually recoverable

User · Answer

Christian Ullenboom  explanation is correct   I m surmising that the OBD2nerForm code you posted is a static initializer block and that it is all generated   Based on that and on the stack trace  it seems likely that generated code is tripping up because it has found some component of your form that doesn t have the type that it is expecting   I d do the following to try and diagnose this    Google for reports of similar problems with NetBeans generated forms  If you are running an old version of NetBeans  scan through the  bugs fixed  pages for more recent releases   Or just upgrade try a newer release anyway to see if that fixes the problem  Try cutting bits out of the form design until the problem  goes away      and try to figure out what the real cause is that way  Run the application under a debugger to figure out what is being  incorrectly  type cast as what   Just knowing the class names may help   And looking at the instance variables of the objects may reveal more  e g  which specific form component is causing the problem    My suspicion is that the root cause is a combination of something a bit unusual  or incorrect  with your form design  and bugs in the NetBeans form generator that is not coping with your form   If you can figure it out  a workaround may reveal itself

[java] exception in initializer error in java when using Netbeans

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