We can use all access modifiers public, private, protected and default for methods.public : When a method is declared as…

We can use only two access modifiers for class public and default.public: A class with public modifier can be visible1)…

In C++ we have access specifiers as public, private, protected and default and access modifiers as static, final. But there…

The important feature of encapsulation is access control. By preventing access control we can misuse of class, methods and members.…

Identifiers are names in java program. Identifiers can be class name, method name or variable name. Rules for defining identifiers…

We can’t define package statement after import statement in java. Package statement must be the first statement in source file.…

Package is a mechanism to group related classes ,interfaces and enums in to a single module. Package can be declared…

For top level class only two access modifiers are allowed. public and default. If a class is declared aspublic it…

Yes we can have multiple classes in single file but it people rarely do that and not recommended. We canhave…

When a reference variable doesn’t point to any value it is assigned null.Example : Employee employee;In the above example employee…

Instanceof operator is used to test the object is of which type. Syntax : instanceof Instanceof returns true if reference…

IS-A RELATIONSHIP HAS- A RELATIONSHIP Is a relationship also known as inheritance Has a relationship also known as composition or…

‘Has a ‘ relationship is also known as “composition or Aggregation”. As in inheritance we have ‘extends’keyword we don’t have…

‘is a’ relationship is also known as inheritance. We can implement ‘is a’ relationship or inheritance in javausing extends keyword.…

Constants in java are created using static and final keywords.1) Constants contains only uppercase letters.2) If constant name is combination…

1) Variable names should start with small letters.2) Variable names should be nouns3) Short meaningful names are recommended.4) If there…

1) Method names should start with small letters.2) Method names are usually verbs3) If method contains multiple words, every inner…

1) Interface should start with uppercase letters2) Interfaces names should be adjectivesExample : Runnable, Serializable, Marker, Cloneable

Sun has created Java Coding standards or Java Coding Conventions . It is recommended highly to followjava coding standards.Classnames should…