Java, Spring & Hibernate Online Test

The Java Spring Hibernate Test evaluates candidates' skills in Java programming language and its frameworks Spring and Hibernate using scenario-based MCQs. The key skills/topics evaluated in the test include knowledge of Spring framework, understanding of Hibernate ORM, familiarity with Java concepts like interfaces, inheritance and abstraction, understanding of web services, experience with data structures and algorithms, and knowledge of software design patterns. The test also include a coding question to check hands-on programming skills.

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Screen candidates with a 45 mins test

Test duration: 45 mins

Difficulty level: Moderate

Availability: Ready to use

Questions:

5 Java MCQs
3 Spring MCQs
3 Hibernate MCQs
1 Java Coding Question

Covered skills:

Java syntax and basics

Java OOPs

Working with Databases in Java

Java data structures

Basics of Spring framework

Spring bean lifecycle

Securing web applications with Spring Security

Hibernate ORM (Object Relational Mapping)

Stored Procedure Queries

Hibernate Sessions

Java Programming

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The Java, Spring & Hibernate Online Test helps recruiters and hiring managers identify qualified candidates from a pool of resumes, and helps in taking objective hiring decisions. It reduces the administrative overhead of interviewing too many candidates and saves time by filtering out unqualified candidates at the first step of the hiring process.

The test screens for the following skills that hiring managers look for in candidates:

Understanding Java syntax and basics
Applying object-oriented programming principles in Java
Working with databases and executing queries in Java
Utilizing different data structures in Java
Understanding the basics of the Spring framework
Managing the complete lifecycle of Spring beans
Implementing web application security using Spring Security
Implementing Object Relational Mapping using Hibernate
Executing stored procedure queries in Hibernate
Understanding the concepts and usage of Hibernate sessions
Demonstrating proficiency in Java programming

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These are just a small sample from our library of 15,000+ questions. The actual questions on this Java, Spring & Hibernate Test will be non-googleable.

🧐 Question
Easy Custom Exception Exception Handling Custom Exceptions	Solve
What does the following code output?
Hard Holding References	Solve
What does the following Java code output?
Medium Abstract Interface OOPs Interfaces	Solve
Given following interface: Which of these are correct classes?
Medium Garbage Collection Garbage Collection	Solve
After which line is "bs" object, created on Line 4, eligible for garbage collection?
Hard Static Init Blocks OOPs	Solve
What does the following code output? 1) G A B E D H 2) G B A D E H 3) G B A D E H C F 4) C F G A B E D H 5) C F G B A D E H 6) G C F A B E D H 7) G C F B A D E H
Medium Autowiring Service	Solve
Review the following two Spring components- SampleA and SampleB: Notice @Autowired line added to SampleService in SampleB (rest of the code is same for both components). What happens when the components are run as a @SpringBootApplication? A: SampleA prints true null B: SampleA prints true class package.SampleService C: SampleA throws a null pointer exception D: SampleA prints false null E: SampleB prints true null F: SampleB prints true class package.SampleService G: SampleB throws a null pointer exception H: SampleB prints false null
Medium Bean init and afterPropertiesSet Beans	Solve
Spring allows specific operations to be performed after the bean is initialized and before the bean is destroyed. Review the following sample Bean that implements init method and overrides afterPropertiesSet. Here’s the bean definition added to the configuration file: What does the code print when the Spring container is started?
Medium Boot Autowiring Spring Boot	Solve
Review the following Spring Boot application code: Here are two possible SampleConfig class definitions: When the code is run as @SpringBootApplication, what would happen? A: Using X as SampleConfig will print- true SimpleDateFormat B: Using X as SampleConfig will print - true class java.text.SimpleDateFormat C: Using X as SampleConfig will print a NullPointerException stacktrace D: Using X as SampleConfig will print a BeanDefinitionParsingException stacktrace E: Using Y as SampleConfig will print- true SimpleDateFormat F: Using Y as SampleConfig will print - true class java.text.SimpleDateFormat G: Using Y as SampleConfig will print a NullPointerException stacktrace H: Using Y as SampleConfig will print a BeanDefinitionParsingException stacktrace
Medium EntityManager	Solve
Here's a way to insert 100,000 entries into Hibernate: Which of the following statements are true about this implementation? A: The code might fail with OutOfMemoryException B: Long running transactions can deplete connection pool C: Every insert statement requires a database roundtrip
Easy Registration Queue Logic Queues	Solve
We want to register students for the next semester. All students have a receipt which shows the amount pending for the previous semester. A positive amount (or zero) represents that the student has paid extra fees, and a negative amount represents that they have pending fees to be paid. The students are in a queue for the registration. We want to arrange the students in a way such that the students who have a positive amount on the receipt get registered first as compared to the students who have a negative amount. We are given a queue in the form of an array containing the pending amount. For example, if the initial queue is [20, 70, -40, 30, -10], then the final queue will be [20, 70, 30, -40, -10]. Note that the sequence of students should not be changed while arranging them unless required to meet the condition. ⚠️⚠️⚠️ Note: - The first line of the input is the length of the array. The second line contains all the elements of the array. - The input is already parsed into an array of "strings" and passed to a function. You will need to convert string to integer/number type inside the function. - You need to "print" the final result (not return it) to pass the test cases. For the example discussed above, the input will be: 5 20 70 -40 30 -10 Your code needs to print the following to the standard output: 20 70 30 -40 -10
Medium Visitors Count Strings Logic	Solve
A manager hires a staff member to keep a record of the number of men, women, and children visiting the museum daily. The staff will note W if any women visit, M for men, and C for children. You need to write code that takes the string that represents the visits and prints the count of men, woman and children. The sequencing should be in decreasing order. Example: Input: WWMMWWCCC Expected Output: 4W3C2M Explanation: ‘W’ has the highest count, then ‘C’, then ‘M’. ⚠️⚠️⚠️ Note: - The input is already parsed and passed to a function. - You need to "print" the final result (not return it) to pass the test cases. - If the input is- “MMW”, then the expected output is "2M1W" since there is no ‘C’. - If any of them have the same count, the output should follow this order - M, W, C.

	🧐 Question	🔧 Skill
	Easy Custom Exception Exception Handling Custom Exceptions	2 mins Java	Solve
What does the following code output?
	Hard Holding References	2 mins Java	Solve
What does the following Java code output?
	Medium Abstract Interface OOPs Interfaces	2 mins Java	Solve
Given following interface: Which of these are correct classes?
	Medium Garbage Collection Garbage Collection	2 mins Java	Solve
After which line is "bs" object, created on Line 4, eligible for garbage collection?
	Hard Static Init Blocks OOPs	2 mins Java	Solve
What does the following code output? 1) G A B E D H 2) G B A D E H 3) G B A D E H C F 4) C F G A B E D H 5) C F G B A D E H 6) G C F A B E D H 7) G C F B A D E H
	Medium Autowiring Service	3 mins Spring	Solve
Review the following two Spring components- SampleA and SampleB: Notice @Autowired line added to SampleService in SampleB (rest of the code is same for both components). What happens when the components are run as a @SpringBootApplication? A: SampleA prints true null B: SampleA prints true class package.SampleService C: SampleA throws a null pointer exception D: SampleA prints false null E: SampleB prints true null F: SampleB prints true class package.SampleService G: SampleB throws a null pointer exception H: SampleB prints false null
	Medium Bean init and afterPropertiesSet Beans	2 mins Spring	Solve
Spring allows specific operations to be performed after the bean is initialized and before the bean is destroyed. Review the following sample Bean that implements init method and overrides afterPropertiesSet. Here’s the bean definition added to the configuration file: What does the code print when the Spring container is started?
	Medium Boot Autowiring Spring Boot	3 mins Spring	Solve
Review the following Spring Boot application code: Here are two possible SampleConfig class definitions: When the code is run as @SpringBootApplication, what would happen? A: Using X as SampleConfig will print- true SimpleDateFormat B: Using X as SampleConfig will print - true class java.text.SimpleDateFormat C: Using X as SampleConfig will print a NullPointerException stacktrace D: Using X as SampleConfig will print a BeanDefinitionParsingException stacktrace E: Using Y as SampleConfig will print- true SimpleDateFormat F: Using Y as SampleConfig will print - true class java.text.SimpleDateFormat G: Using Y as SampleConfig will print a NullPointerException stacktrace H: Using Y as SampleConfig will print a BeanDefinitionParsingException stacktrace
	Medium EntityManager	3 mins Hibernate	Solve
Here's a way to insert 100,000 entries into Hibernate: Which of the following statements are true about this implementation? A: The code might fail with OutOfMemoryException B: Long running transactions can deplete connection pool C: Every insert statement requires a database roundtrip
	Easy Registration Queue Logic Queues	30 mins Coding	Solve
We want to register students for the next semester. All students have a receipt which shows the amount pending for the previous semester. A positive amount (or zero) represents that the student has paid extra fees, and a negative amount represents that they have pending fees to be paid. The students are in a queue for the registration. We want to arrange the students in a way such that the students who have a positive amount on the receipt get registered first as compared to the students who have a negative amount. We are given a queue in the form of an array containing the pending amount. For example, if the initial queue is [20, 70, -40, 30, -10], then the final queue will be [20, 70, 30, -40, -10]. Note that the sequence of students should not be changed while arranging them unless required to meet the condition. ⚠️⚠️⚠️ Note: - The first line of the input is the length of the array. The second line contains all the elements of the array. - The input is already parsed into an array of "strings" and passed to a function. You will need to convert string to integer/number type inside the function. - You need to "print" the final result (not return it) to pass the test cases. For the example discussed above, the input will be: 5 20 70 -40 30 -10 Your code needs to print the following to the standard output: 20 70 30 -40 -10
	Medium Visitors Count Strings Logic	30 mins Coding	Solve
A manager hires a staff member to keep a record of the number of men, women, and children visiting the museum daily. The staff will note W if any women visit, M for men, and C for children. You need to write code that takes the string that represents the visits and prints the count of men, woman and children. The sequencing should be in decreasing order. Example: Input: WWMMWWCCC Expected Output: 4W3C2M Explanation: ‘W’ has the highest count, then ‘C’, then ‘M’. ⚠️⚠️⚠️ Note: - The input is already parsed and passed to a function. - You need to "print" the final result (not return it) to pass the test cases. - If the input is- “MMW”, then the expected output is "2M1W" since there is no ‘C’. - If any of them have the same count, the output should follow this order - M, W, C.

	🧐 Question	🔧 Skill	💪 Difficulty	⌛ Time
	Custom Exception Exception Handling Custom Exceptions	Java	Easy	2 mins	Solve
What does the following code output?
	Holding References	Java	Hard	2 mins	Solve
What does the following Java code output?
	Abstract Interface OOPs Interfaces	Java	Medium	2 mins	Solve
Given following interface: Which of these are correct classes?
	Garbage Collection Garbage Collection	Java	Medium	2 mins	Solve
After which line is "bs" object, created on Line 4, eligible for garbage collection?
	Static Init Blocks OOPs	Java	Hard	2 mins	Solve
What does the following code output? 1) G A B E D H 2) G B A D E H 3) G B A D E H C F 4) C F G A B E D H 5) C F G B A D E H 6) G C F A B E D H 7) G C F B A D E H
	Autowiring Service	Spring	Medium	3 mins	Solve
Review the following two Spring components- SampleA and SampleB: Notice @Autowired line added to SampleService in SampleB (rest of the code is same for both components). What happens when the components are run as a @SpringBootApplication? A: SampleA prints true null B: SampleA prints true class package.SampleService C: SampleA throws a null pointer exception D: SampleA prints false null E: SampleB prints true null F: SampleB prints true class package.SampleService G: SampleB throws a null pointer exception H: SampleB prints false null
	Bean init and afterPropertiesSet Beans	Spring	Medium	2 mins	Solve
Spring allows specific operations to be performed after the bean is initialized and before the bean is destroyed. Review the following sample Bean that implements init method and overrides afterPropertiesSet. Here’s the bean definition added to the configuration file: What does the code print when the Spring container is started?
	Boot Autowiring Spring Boot	Spring	Medium	3 mins	Solve
Review the following Spring Boot application code: Here are two possible SampleConfig class definitions: When the code is run as @SpringBootApplication, what would happen? A: Using X as SampleConfig will print- true SimpleDateFormat B: Using X as SampleConfig will print - true class java.text.SimpleDateFormat C: Using X as SampleConfig will print a NullPointerException stacktrace D: Using X as SampleConfig will print a BeanDefinitionParsingException stacktrace E: Using Y as SampleConfig will print- true SimpleDateFormat F: Using Y as SampleConfig will print - true class java.text.SimpleDateFormat G: Using Y as SampleConfig will print a NullPointerException stacktrace H: Using Y as SampleConfig will print a BeanDefinitionParsingException stacktrace
	EntityManager	Hibernate	Medium	3 mins	Solve
Here's a way to insert 100,000 entries into Hibernate: Which of the following statements are true about this implementation? A: The code might fail with OutOfMemoryException B: Long running transactions can deplete connection pool C: Every insert statement requires a database roundtrip
	Registration Queue Logic Queues	Coding	Easy	30 mins	Solve
We want to register students for the next semester. All students have a receipt which shows the amount pending for the previous semester. A positive amount (or zero) represents that the student has paid extra fees, and a negative amount represents that they have pending fees to be paid. The students are in a queue for the registration. We want to arrange the students in a way such that the students who have a positive amount on the receipt get registered first as compared to the students who have a negative amount. We are given a queue in the form of an array containing the pending amount. For example, if the initial queue is [20, 70, -40, 30, -10], then the final queue will be [20, 70, 30, -40, -10]. Note that the sequence of students should not be changed while arranging them unless required to meet the condition. ⚠️⚠️⚠️ Note: - The first line of the input is the length of the array. The second line contains all the elements of the array. - The input is already parsed into an array of "strings" and passed to a function. You will need to convert string to integer/number type inside the function. - You need to "print" the final result (not return it) to pass the test cases. For the example discussed above, the input will be: 5 20 70 -40 30 -10 Your code needs to print the following to the standard output: 20 70 30 -40 -10
	Visitors Count Strings Logic	Coding	Medium	30 mins	Solve
A manager hires a staff member to keep a record of the number of men, women, and children visiting the museum daily. The staff will note W if any women visit, M for men, and C for children. You need to write code that takes the string that represents the visits and prints the count of men, woman and children. The sequencing should be in decreasing order. Example: Input: WWMMWWCCC Expected Output: 4W3C2M Explanation: ‘W’ has the highest count, then ‘C’, then ‘M’. ⚠️⚠️⚠️ Note: - The input is already parsed and passed to a function. - You need to "print" the final result (not return it) to pass the test cases. - If the input is- “MMW”, then the expected output is "2M1W" since there is no ‘C’. - If any of them have the same count, the output should follow this order - M, W, C.

Test candidates on core Java, Spring & Hibernate Hiring Test topics

Java syntax and basics: Java syntax and basics refers to the fundamental concepts and rules of the Java programming language. It covers topics such as variables, data types, operators, control structures, and basic input/output. This skill should be measured in the test to assess the candidate's understanding of the core syntax and foundational concepts of Java programming.

Java OOPs: Java OOPs stands for Object-Oriented Programming in Java. It involves the use of classes, objects, inheritance, polymorphism, and encapsulation to organize and structure code. This skill should be measured in the test to evaluate the candidate's ability to design and implement object-oriented solutions using Java.

Working with Databases in Java: Working with Databases in Java involves connecting to a database, executing SQL queries, and retrieving and manipulating data. Candidates should possess knowledge of JDBC (Java Database Connectivity) and understand database concepts such as tables, columns, and primary keys. This skill should be measured in the test to gauge the candidate's proficiency in integrating Java with databases.

Java data structures: Java data structures are used to store and organize data efficiently. Common data structures in Java include arrays, linked lists, stacks, queues, and trees. Candidates should be familiar with the characteristics and appropriate usage of different data structures. This skill should be measured in the test to assess the candidate's understanding of data organization and manipulation in Java.

Basics of Spring framework: The Spring framework is a popular Java framework that provides a comprehensive infrastructure for developing Java applications. It offers features such as dependency injection, aspect-oriented programming, and MVC (Model-View-Controller) architecture. This skill should be measured in the test to evaluate the candidate's knowledge of the core concepts and functionalit

Spring bean lifecycle: The Spring bean lifecycle refers to the sequence of events that occur during the creation, initialization, and destruction of a Spring bean. It includes phases such as instantiation, property injection, and initialization callbacks. Candidates should understand the different stages and methods involved in the Spring bean lifecycle. This skill should be measured in the test to assess the candidate's understanding of how Spring manages the lifecycle of beans.

Securing web applications with Spring Security: Spring Security is a powerful framework for implementing security measures in Java web applications. It provides features such as authentication, authorization, and access control. Candidates should be familiar with concepts like user authentication, password encryption, and role-based access control. This skill should be measured in the test to evaluate the candidate's ability to implement secure web applications using Spring Security.

Hibernate ORM (Object Relational Mapping): Hibernate ORM is a Java framework that simplifies the process of mapping Java objects to relational database tables. It allows developers to interact with databases using object-oriented approaches, rather than writing SQL queries. Candidates should understand concepts like object-relational mapping, entities, relationships, and transactions. This skill should be measured in the test to assess the candidate's proficiency in using Hibernate for database access and manipulation.

Stored Procedure Queries: Stored Procedure Queries involve the creation and execution of database queries that are stored and reused on the database server. Candidates should be familiar with the syntax and usage of stored procedures in the target database system, as well as how to call them from Java code. This skill should be measured in the test to evaluate the candidate's ability to work with stored procedures in a Java application.

Hibernate Sessions: Hibernate Sessions involve managing the interaction between Java objects and the database. Sessions provide methods for querying, saving, updating, and deleting data. Candidates should know how to open, close, and utilize Hibernate Sessions effectively. This skill should be measured in the test to assess the candidate's understanding of Hibernate's session management and data persistence capabilities.

Java Programming: Java Programming refers to the overall ability to write clean, efficient, and readable code in the Java programming language. It encompasses all the aforementioned skills and extends to problem solving, algorithm design, and code optimization. This skill should be measured in the test to evaluate the candidate's overall proficiency and competence in Java development.

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