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Java 8 Online Test

Topics Covered

  • Exception Methods and Lambdas
  • Stream and Parallel Processing
  • Exceptions
  • Threads
  • Arrays
  • Date and Time in Java 8
  • Lambda Expressions
  • Reading File Lines

Useful for hiring

  • Senior Java Developers
  • Java Expert
  • Java Programmers

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Question

Consider the following code:
TreeSet machineTreeSet = machineStream.collect(Collectors.toCollection(()->new TreeSet()));

How can we simplify the above code?

Answer
    • TreeSet<Machine> machine = machineStream.collect(Collectors.toCollection(TreeSet::new));

    • TreeSet<Machine> machine = machineStream.collectTo(Collectors.toCollection(TreeSet::new));

    • TreeSet<Machine> machine = machineStream.collectIn(Collectors.toCollection(TreeSet->new));

    • TreeSet<Machine> machine = machineStream.collect(Collectors.toCollection(TreeSet->new));

Question

Consider the following code:
long count = 0;
List people = getPeople();
for (Person p : people) 
{
    if (p.getName().equals("Johnny")) 
    {
        count++;
    }
}

How can we rewrite the code above using Stream?

Answer
    • List<Person> people = getPeople(); long count = people.stream().filtering(person -> person.getName().equals("Johnny")).count();

    • List<Person> people = getPeople(); long count = people.stream->filter(person -> person.getName().equals("Johnny")).count();

    • List<Person> people = getPeople(); long count = people.stream().filter(person -> person.getName().equals("Johnny")).count();

    • List<Person> people = getPeople(); long count = people.stream::filter(person -> person.getName().equals("Johnny")).count();

Test details:

Java 8 online test for experienced candidates enables employers to identify potential hires by evaluating working skills and job readiness. For this reason, in our online test for Java 8, an emphasis is laid upon evaluating the knowledge of applied skills gained through real work experience, rather than theoretical knowledge.

This online test of Java 8 contains MCQ's (Multiple Choice Questions), MAQ's (Multiple Answer Questions), Fill in the Blank, Descriptive, True or False.

Test Details: 20 minutes 

15 Application Questions

05 Theory Questions 


Online Java 8 test for experienced candidates consists of the combination of application and theory questions that help to evaluate technical as well as practical skills of candidates. You can also get this Java online test (8) customized as per your job description of Java developer.

Test description:

Java 8 is an updated version of Java programming language. It provides functional programming support, Nashorn JavaScript engine, and new API date time manipulation updates. Java 8 includes features like security and improved performances, productivity and ease of use, enhancement in Lambda expression & virtual extension methods.

Java 8 online test is created & validated by global subject matter experts (SMEs) to check the Java 8 skills of the candidates- as per the industry standards. Online test on Java helps recruiters & hiring managers to assess Java 8 programming skills of the candidate.

Online Java 8 test contains meaningful questions on the following topics:
  • Exception methods and Lambdas
  • Date and time in Java 8
  • Lambda expressions
  • Reading file lines
  • Stream and parallel processing
  • Exceptions
  • Threads
  • Arrays
Online Java test for experienced helps to screen the candidates who possess traits as follows:

1.  Ability to design, develop and test Java based solutions using common standards and frameworks such as JAXB, JAX-WS, JAX-RS, JPA, JavaEE, Spring, and Hibernate
2.  Experience of working on exceptions, threads and arrays
3.  Knowledge of exception methods and Lambdas
4.  Working knowledge and experience with JQuery, Ajax, JSON, CSS, HTML
5.  Use the online test in Java 8 to assess expertise of the applicant in the latest version of Java effectively & efficiently

You will get the detailed reports of Java 8 assessment test instantly. This intelligent reporting system gives you sub-sectional scores for Java 8 test, that help you to analyze the skill related strengths and weaknesses of the candidate, thereby assisting you in making better hiring decisions.

Good News! You can customize this test as per your requirement

  • Choose and add questions from Interview Mocha question libraries

  • Add your own set of questions

  • Customize test settings like duration, number of questions, passing score, web proctoring and much more

  • Mail us at support@interviewmocha.com to create a custom test

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