In Java, all classes (built-in or user-defined) are (implicitly) subclasses of Object . Using an array of Object in the List class allows any kind of Object (an instance of any class) to be stored in the list. However, primitive types (int, char, etc) cannot be stored in the list.
Read moreWhat are the built in packages in Java?
There are many built-in packages such as java, lang, awt, javax, swing, net, io, util, sql etc.
Read moreWhat are the built in packages in Java?
There are many built-in packages such as java, lang, awt, javax, swing, net, io, util, sql etc.
Read moreHow many inbuilt classes are there in Java?
There are 5,000 or so classes built-in to Java, and programmers have written hundreds of thousands if not millions of their own.
Read moreHow many inbuilt classes are there in Java?
There are 5,000 or so classes built-in to Java, and programmers have written hundreds of thousands if not millions of their own.
Read moreWhat is a built in class?
A built-in class is a class whose instances have restricted capabilities or special representations . Attempting to use defclass to define subclasses of a built-in class signals an error of type error. Calling make-instance to create an instance of a built-in class signals an error of type error.
Read moreWhat is a built in class?
A built-in class is a class whose instances have restricted capabilities or special representations . Attempting to use defclass to define subclasses of a built-in class signals an error of type error. Calling make-instance to create an instance of a built-in class signals an error of type error.
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