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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 "main" 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.<init>(OBD2nerForm.java:75) at Status.<clinit>(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("Data In Que:"); jLabel9.setFont(new Font("DejaVu Sans", 0, 14)); jLabel9.setText("FFFFFFFFFFFFFFFFFFFF"); 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("tab6", jPanel5); add(jTabbedPane1, BorderLayout.CENTER); bindingGroup.bind(); pack(); }// </editor-fold> 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.
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How to handle the ExceptionInInitializerError Error. To avoid this error, simply ensure that: static initializers of classes do not throw any unchecked exception, and that. static class variable initializations do not throw any unchecked exceptions.
An ExceptionInInitializerError is thrown to indicate that an exception occurred during evaluation of a static initializer or the initializer for a static variable. As of release 1.4, this exception has been retrofitted to conform to the general purpose exception-chaining mechanism.
We can resolve the java. lang. ExceptionInInitializerError by ensuring that static initializer block of classes does not throw any Runtime Exception. We can resolve also resolve this exception by ensuring that the initializing static variable of classes also doesn't throw any Runtime Exception.
The ExceptionInInitializerError indicates that an unexpected exception has occurred in a static initializer. Basically, when we see this exception, we should know that Java failed to evaluate a static initializer block or to instantiate a static variable.
You get an ExceptionInInitializerError if something goes wrong in the static initializer block.
class C { static { // if something does wrong -> 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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