Java language interview questions and answers pdf


 

Java Interview Questions And Answers Pdf Yes, We can execute A native method is a method that is applied in a language other than Java. Java Interview Questions Why is Java called the Platform Independent Programming Language? .. Both implementations share some common. Get Interview Questions and answers on JAVA for freshers with pdf, learn Answer- The features of this programming language are as follows-.

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Java Language Interview Questions And Answers Pdf

5) Difference between method overloading and method overriding in java? . .. 9. 6) Difference between . Core java Interview questions on Coding Standards. ) List out benefits of object oriented programming language?. Dear readers, these Java Interview Questions have been designed especially to the subject and later they continue based on further discussion and what you answer − What are the supported platforms by Java Programming Language?. Contains Important Java Interview Questions with Answers and Java FAQs helpful for clearing any Java Job Java Language Interview Question and Answers.

Many types: Class Method Area: Class Area stores per-class structures such as the runtime constant pool, field, method data, and the code for methods. Heap: It is the runtime data area in which the memory is allocated to the objects Stack: Java Stack stores frames. It holds local variables and partial results, and plays a part in method invocation and return. Each thread has a private JVM stack, created at the same time as the thread. A new frame is created each time a method is invoked. A frame is destroyed when its method invocation completes. Program Counter Register: PC program counter register contains the address of the Java virtual machine instruction currently being executed. Native Method Stack: It contains all the native methods used in the application. More Details.

It is a compile-time polymorphism.

The methods must have a different signature. It may or may not need inheritance in Method Overloading.

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It is a run time polymorphism. The methods must have the same signature. It always requires inheritance in Method Overriding. Can you override a private or static method in Java?

100+ Java Interview Questions You Must Prepare In 2019

You cannot override a private or static method in Java. If you create a similar method with the same return type and same method arguments in child class then it will hide the superclass method; this is known as method hiding.

What you can do is create another private method with the same name in the child class. What is multiple inheritance? Is it supported by Java?

If a child class inherits the property from multiple classes is known as multiple inheritance. Java does not allow to extend multiple classes. The problem with multiple inheritance is that if multiple parent classes have the same method name, then at runtime it becomes difficult for the compiler to decide which method to execute from the child class. The problem is commonly referred to as Diamond Problem.

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What is encapsulation in Java? Encapsulation is a mechanism where you bind your data variables and code methods together as a single unit. Here, the data is hidden from the outer world and can be accessed only via current class methods.

This helps in protecting the data from any unnecessary modification. We can achieve encapsulation in Java by: Declaring the variables of a class as private.

+ Java Interview Questions And Answers For | Edureka

Providing public setter and getter methods to modify and view the values of the variables. What is an association?

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Association is a relationship where all object have their own lifecycle and there is no owner. Multiple students can associate with a single teacher and a single student can associate with multiple teachers but there is no ownership between the objects and both have their own lifecycle. Java Interview Questions and Answers Edureka.

It is the return type of the method. Void defines the method which will not return any value. It is the method where the main execution occurs. String args[]: It is the parameter passed to the main method.

Array List Vector Array List is not synchronized.

Vector is synchronized. Vector is slow as it is thread safe. Vector defaults to doubling size of its array. Array List does not define the increment size. Vector defines the increment size. Array List can only use Iterator for traversing an Array List. Question 3- Why Java is a strongly typed language? Answer- It is a strongly typed language because :- 1. Every variable and expression has a strongly defined type.

All assignments are checked for type compatibility. Question 4- Draw a diagrammatic representation of Java? Answer- An applet is a special kind of Java program that is designed to be transmitted over the internet and automatically executed by a Java compatible web browser. They are downloaded on demand without interacting with user.

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