Java Questions

Method contains name, parameters, return type and executable body. But block does not contains name, parameters, return type.It contains only executable body.

Methods are executed by method call statements. Blocks are executed automatically with class loading and with object creation.

A constructor is a member function of a class that is used to create objects of that class. It has the same name as the class itself, has no return type, and is invoked using the new operator. We cannot invoke a constructor directly.

A method is an ordinary member function of a class. It has its own name, a return type (which may be void), and is invoked using the dot operator.

Client code must use setters and getters to access internal data in DataHiding

A JAR file (short for Java Archive) is a ZIP file used to distribute a set of Java classes. It is used to store compiled Java classes and associated metadata that can constitute a program

Wrapping is also called as packing or boxing.

Storing the data inside the object as private data which can accessed outside the class only by using methods.

we can override tostring() method to return String representation of our object data