Wipro Trainee Interview Questions and Answers

Q1. Opps concepts on java
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Q2. What is oops meaning
Ans. 
OOPs stands for Object-Oriented Programming, a programming paradigm based on the concept of objects.
• OOPs focuses on creating objects that contain data and methods to manipulate that data.

• Encapsulation, inheritance, and polymorphism are key principles of OOPs.

• Examples of OOPs languages include Java, C++, and Python.
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Q3. What is encapsulation
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Encapsulation is the concept of bundling data and methods that operate on the data into a single unit, preventing direct access to the data from outside the unit.
• Encapsulation helps in data hiding and abstraction

• It allows for better control over data by restricting access to certain components

• Example: In object-oriented programming, classes encapsulate data and methods to create objects
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Q4. What is inheritance
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Inheritance is a concept in object-oriented programming where a class can inherit attributes and methods from another class.
• Inheritance allows for code reusability and promotes the concept of hierarchy in programming.

• A subclass can inherit attributes and methods from a superclass, but can also have its own unique attributes and methods.

• For example, a 'Vehicle' class can be a superclass, with subclasses like 'Car' and '...read more
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Q5. How to create an array
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An array is a data structure that stores a collection of elements of the same type in a contiguous memory location.
• Declare an array by specifying the data type of the elements and the size of the array.

• Initialize the array by assigning values to each element.

• Access elements in the array using their index, starting from 0.

• Example: String[] names = new String[3]; names[0] = "Alice"; names[1] = "Bob"; names[2] = "Charlie"...read more
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Verbal Ability,Grammar

Q1. In SQL how to find second largest number?
Ans. 
Use the ORDER BY clause with DESC and LIMIT to find the second largest number in SQL.
• Use the ORDER BY clause to sort the numbers in descending order.

• Use the LIMIT clause to limit the result to the second row.

• Example: SELECT column_name FROM table_name ORDER BY column_name DESC LIMIT 1, 1;
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3 types of aptitude round's (numerical,English,logical thinking)

Q1. Ask from your resume
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Q1. Self introduction normal question
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Basic test nothing hard questions were asked.iverall very badic

Q1. Badic test overall.nothing hard was asked badic language asked
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Q2. What is diff between jre and kdk
Ans. 
JRE stands for Java Runtime Environment, which is used to run Java applications. JDK stands for Java Development Kit, which is used to develop Java applications.
• JRE is used to run Java applications, while JDK is used to develop Java applications

• JDK includes JRE along with development tools such as compiler and debugger

• JDK is required for developing Java applications, while JRE is sufficient for running them
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Q3. What is class in java
Ans. 
In Java, a class is a blueprint for creating objects. It defines the properties and behaviors of objects.
• Classes are used to create objects in Java.

• They contain data fields (attributes) and methods (functions).

• Classes can be used to create multiple objects with the same properties and behaviors.

• Example: class Car { String color; int year; void start() { // code to start the car } }
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Q1. Tell me about your self Oops Java questions
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The test was of very high level

The topics given in gd is very much complicated

Q1. The HR questions were very easy
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Q2. Why do you want to join wipro
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