So i have an exercise given from my lecturer to build a registration system. My job is to test the program. My friends gave me the source code, but i cant seem to get it running, although one of my friend can open it without any problems
Here is the error message
java.io.InvalidClassException: javax.swing.JComponent; local class incompatible: stream classdesc serialVersionUID = -3424753864000836906, local class serialVersionUID = 3742318830738515599
at java.io.ObjectStreamClass.initNonProxy(ObjectStreamClass.java:621)
at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1623)
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1518)
at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1623)
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1518)
at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1623)
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1518)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1774)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:371)
at java.beans.Beans.instantiate(Beans.java:199)
at java.beans.Beans.instantiate(Beans.java:80)
at gui.MainWindow.initComponents(MainWindow.java:208)
at gui.MainWindow.<init>(MainWindow.java:34)
at srs.Driver.main(Driver.java:17)
Exception in thread "main" java.lang.IllegalArgumentException:
Component must be non-null
at javax.swing.GroupLayout$ComponentSpring.<init>(GroupLayout.java:2953)
at javax.swing.GroupLayout$ComponentSpring.<init>(GroupLayout.java:2933)
at javax.swing.GroupLayout$Group.addComponent(GroupLayout.java:1524)
at javax.swing.GroupLayout$ParallelGroup.addComponent(GroupLayout.java:2484)
at javax.swing.GroupLayout$ParallelGroup.addComponent(GroupLayout.java:2454)
at javax.swing.GroupLayout$Group.addComponent(GroupLayout.java:1505)
at javax.swing.GroupLayout$ParallelGroup.addComponent(GroupLayout.java:2476)
at gui.MainWindow.initComponents(MainWindow.java:1680)
at gui.MainWindow.<init>(MainWindow.java:34)
at srs.Driver.main(Driver.java:17)
Java Result: 1
In one of the package i have this class called "MainWindow.java", and "MainWindow_creditsField2.ser". This package is for GUI purposes.
I am assuming the error has something to do with the .ser file. When I asked my friend what that file is, he did not know what that file is, and said that it's automatically generated
When I clicked on 3 of the last errors,
- Driver tells me the line MainWindow mainWindow = new MainWindow();
- MainWindow tells me line initComponents();
I think that is all the leads I can give you
