UnsupportedOperationException：不支持。 在jframe中

Question

I am making an application in jframe using Hibernate. When I try to jump from Login page to sign up button ( onButtonAction ), Java throws the following exception:

Exception in thread "AWT-EventQueue-0" java.lang.UnsupportedOperationException: Not supported yet.
at librarymanage2.UserSignUp.<init>(UserSignUp.java:34)
at librarymanage2.LoginPage.jButton3ActionPerformed(LoginPage.java:209)

I used this code to jump:-

UserSignUp n=new UserSignUp(this);
n.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
n.setVisible(true);`

Answer 1

This means that the constructor of your UserSignUp class (somehow) throws an UnsupportedOperationException , either by itself or via a method call.

If you want more help than this, then post more code.

Also, open the UserSignUp class in your IDE's decompiler to see what's happening at around line 34. Well it should be the line that throws UnsupportedOperationException . See the code right before that, and if there are some conditions leading up to that point. In particular, the this parameter you're passing to the constructor, perhaps there are some checks on it, and as a result the class decides that the operation on this object is not supported and so it throws.