Java Programming Basics

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Questions and Answers

What is the best method for implementing a queue using stacks?

Using a linked list to simulate stack behavior.

Using a single stack to manage all elements.

Using two stacks and enqueueing elements in the first stack. (correct)

Using one stack to dequeue and another to enqueue.

Which of the following is NOT a method for accessing data in a database with JDBC?

Selecting data from tables

Updating Data

Deleting Data from the Database

Creating Indexes (correct)

What is a primary benefit of using prepared statements in JDBC?

They automatically manage the connection pooling.

They provide a way to retrieve metadata about the database.

They help prevent SQL injection attacks. (correct)

They allow for dynamic schema changes.

In the context of data processing in Java, which of the following formats is commonly processed?

JSON data (A) Signup and view all the answers

Which teaching method encourages active participation from students?

Flipped class room (A) Signup and view all the answers

What kind of evaluation technique allows for flexibility in assessing student progress?

Continuous assessment tests (C) Signup and view all the answers

Which of the following books focuses specifically on best practices in Java programming?

Effective Java (D) Signup and view all the answers

What is one main focus of contemporary topics discussed in guest lectures?

Emerging trends in technology (B) Signup and view all the answers

Which Java programming book was published most recently?

Introduction to Java Programming and Data Structures (C) Signup and view all the answers

What is a characteristic of activity-based teaching/learning methods?

Involvement of students in hands-on or practical activities (C) Signup and view all the answers

In the context of object-oriented programming, which type of relationship represents a 'whole-part' association, where one class is composed of multiple instances of another class?

Aggregation (B) Signup and view all the answers

Which of the following access modifiers in Java allows a class member to be accessed only within the same package but not by other packages?

default (B) Signup and view all the answers

Which of the following data structures is best suited for implementing a Last-In-First-Out (LIFO) data access strategy?

Stack (A) Signup and view all the answers

What is the purpose of the 'throws' keyword in Java exception handling?

To indicate that a method might throw a specific exception (C) Signup and view all the answers

Which of the following looping constructs is a 'post-test loop' where the condition is checked after the loop body is executed at least once?

Do-While loop (C) Signup and view all the answers

What is the main advantage of using an Abstract Class over an Interface in Java?

All of the above (D) Signup and view all the answers

In a 'switch' statement, what happens if the case value matches the expression value, but a 'break' statement is missing?

The switch statement will continue executing the next case. (B) Signup and view all the answers

Which of the following concepts is closely related to compile-time polymorphism?

Method Overloading (D) Signup and view all the answers

In the context of thread synchronization, which approach allows only one thread to access a shared resource at a time?

Using synchronized blocks (C) Signup and view all the answers

Which of the following data structures is NOT typically used for implementing a queue data structure?

Stack (C) Signup and view all the answers

Which of the following is NOT a disadvantage of functional programming, as mentioned in the provided content?

Inefficient memory usage (A) Signup and view all the answers

Identify the correct statement based on the information provided regarding data types in Java:

The <code>char</code> data type can store a single character, but not a sequence of characters. (B) Signup and view all the answers

In the context of object-oriented programming (OOP), what is encapsulation and how is it achieved in Java?

Encapsulation combines data and methods that operate on that data within a single unit, restricting direct access to the data to the methods within the unit. It is achieved by declaring data members as private and providing public methods to access and modify them. (B) Signup and view all the answers

Which of the following is NOT a valid way to get input from the user during runtime in Java?

Using the <code>System.out.println()</code> method to display a prompt and then reading the input from the console directly. (A) Signup and view all the answers

Consider the following Java code snippet:

public class MyClass {
  public static void main(String[] args) {
    int x = 5;
    int y = 10;
    int z = x + y;
    System.out.println("The sum is: " + z);
  }
}

Which of the following statements is TRUE regarding the code snippet?

The <code>System.out.println()</code> method is used to print the value of the variable <code>z</code> to the console, along with the string "The sum is:". (A), The <code>main</code> method is declared with the <code>static</code> keyword, indicating that it is not associated with a specific object of the <code>MyClass</code> class. (B), The variable <code>z</code> is declared as a local variable within the <code>main</code> method, meaning it is accessible only within that method. (D) Signup and view all the answers

Based on the course content, which of the following is an accurate statement about the relationship between classes and objects?

An object is a specific instance of a class, representing a single entity with defined attributes and methods. (D) Signup and view all the answers

Which of the following programming concepts is NOT explicitly mentioned as a key learning outcome in the course description?

Data structures (D) Signup and view all the answers

Based on the course objectives, which of the following skills will the students NOT necessarily be able to demonstrate upon successful completion of the course?

Designing and implementing complex algorithms for solving specific problems. (C) Signup and view all the answers

Based on the course description and the listed Student Outcomes (SO), which specific learning outcome(s) are associated with the module on "Object and Class, Data types, Basic I / O"?

d, g (A) Signup and view all the answers

From the provided information, which is NOT a specific task that students will be able to perform after completing the course?

Designing and implementing a comprehensive web application using Java and a suitable framework. (C) Signup and view all the answers

Flashcards

Control statements

Programming constructs that direct the flow of execution based on conditions.

If..else statement

A control statement that executes a block of code based on a true or false condition.