Access modifiers:access modifiers are used to provide access level and visibility to variables,classes and to methods. there are four access modifiers in java. default privatepublicprotected1. default ...

Should not import everything in a package like( java.math.*), only import what is needed. implement equals & hashcode method of Object class in ur class if u want to compare the objects of that class.

Every element of a software architecture, e.g. a subsystem, package, or class, should have a well-defined interface that exposes or hides its sub elements according to the principles of information ...

Access modifiers allow Java developers to define package and class interfaces tailored for different groups of clients. According to the principles of information hiding and encapsulation, the ...