What is an example of a runtime error in java?

Java

A common example of a runtime error in Java is the NullPointerException. This occurs when a program attempts to use an object reference that has not been initialized or is set to null. For instance, calling a method on a null object will trigger this error, leading to program termination unless properly handled through exception handling mechanisms. Runtime errors typically arise during the execution of the program, as opposed to compile-time errors, which are detected during the compilation process.