Java - Exceptions - Interview Questions and Answers on IllegalStateException

Q1.  Invoking start twice on same thread leads to ..

 a. ClassCastException
 b. NullPointerException
 c. InterruptedException
 d. IllegalStateException

Ans. IllegalStateException

Q2. Which interfaces are implemented by IllegalStateException?

Ans.[, Serializable]

Q3. Which is the Parent Class of IllegalStateException class?

Ans.java.lang.RuntimeException

Q4. What is the package name for IllegalStateException class?

Ans.java.lang