Java Runtime exception RuntimeException

RuntimeException more special If the exception is thrown in the function body, the function name can not be declared, and compilation can be done by the caller without processing even if the exception is declared on the function name.
The reason is not declared on the function, is not want the caller to handle, because can not handle, only the program to stop the modification code to fix.
When this happens, the exception caller cannot handle it, only modify the code to handle it, throw a runtimeexception
For example Nullpointexception, the caller passed a null parameter, the program, the subsequent code execution is meaningless, can only stop the program fix code



From for notes (Wiz)

Java Runtime exception RuntimeException