java.lang.ClassCastException with the same class object

Question

This piece of code irritates me, sometimes it working and some other times it doesn\'t !

The NamedQuery : (name = \"User.findByLogin\", query = \"SEL

Answer 1

I face same issue in my spring-boot application and waste my so much time to solve it.

Issue is generate because of classloaders.

Classloaders of Model class and Session class both are different.

System.out.println("ClassLoader : " + Employee.class.getClassLoader());
System.out.println(session.getClass().getClassLoader()); //Hibernate Session object

ClassLoader : org.springframework.boot.devtools.restart.classloader.RestartClassLoader@a3af3c
sun.misc.Launcher$AppClassLoader@1d16e93

I face this issue because of this dependency.

  org.springframework.boot
    spring-boot-devtools
    true

When i comment this then my code working fine, so i suggest you to please check your jars.

System.out.println("ClassLoader : " + Employee.class.getClassLoader());
System.out.println(session.getClass().getClassLoader()); //Hibernate Session object

ClassLoader : sun.misc.Launcher$AppClassLoader@1d16e93
sun.misc.Launcher$AppClassLoader@1d16e93

Hope this answer help you.