What is ClassCastException?

A ClassCastException extends from the RuntimeException class. It is thrown when an attempt is made to cast an object, which is not of the appropriate run-time type. For example: Object obj = new Vector(); String s = (String) obj; Following are the two kinds of constructors for......[read more]

What is modifier?

Modifier is a Java keyword that affects the behavior of the feature it precedes. Java has a number of modifiers, which are as follows: final: It defines a constant feature. private: It specifies that a feature can be accessed only by code in the same class. protected : It......[read more]

What are keywords?

Every computer language uses some reserved words known as keywords. They are an essential part of the language. In Java, keywords are defined in lower case and cannot be used as identifiers. The table given below shows the list of keywords used in Java: abstract assert boolean break......[read more]