Other
Other
What are access modifiers? Access modifiers are a tool with which you can customize access to classes, methods, and variables. There are the following
Other
What is Instance Variable? Instance Variable is a variable that is defined within a class, and it exists as long as the object exists. An example is the
Other
What is Local Variable? Another of the most popular Java developer interview questions. A local variable is a variable that is defined within a method
Other
What is polymorphism in Java? Polymorphism is the ability of a program to identically use objects with the same interface without knowing the specific
Other
What is encapsulation in Java? This question comes up a lot in Java developer interviews. Encapsulation is hiding the implementation with access modifiers
Other
What is inheritance in Java? Answer Inheritance means that one class can inherit (“extends”) another class. Thus, you can reuse the code from the class
Other
What are the features of Java? Answer: OOP concepts: object-oriented; inheritance; encapsulation; polymorphism; abstract. Cross-platform: A Java program
Other
When I execute some code, a NullReferenceException is thrown with the following message: Object reference not set to an instance of an object.