1
JavaBeginner#exceptions
JavaBeginner#exceptions
What is the exception hierarchy in Java?
Throwable is the root, splitting into Error (serious JVM-level issues like OutOfMemoryError, not meant to be caught) and Exception (recoverable conditions), which further splits into checked exceptions and RuntimeException (unchecked).
Example
try { throw new IllegalStateException("bad state"); }
catch (RuntimeException e) { System.out.println(e.getMessage()); }