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Java Machine Test- Medium Level Coding
Clock
Test duration:
40
min
Notes
No. of questions:
2
Tie
Level of experience:
Entry-level/Mid/Senior

Java Coding Test (Medium)

Java machine test helps tech recruiters and hiring managers to assess the Java developer's programming skills (Mid-Level) before hiring. This Java practical test has helped our customers reduce technical screening time by 85%.

1980
+
Candidates
Assessed
199
+
Organizations Served
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About

Java Machine Test- Medium Level Coding

Java practical test is designed and validated by experienced Subject Matter Experts (SME) to assess and hire mid-level Java developers as per industry standards.  

 

Why use iMocha’s Java machine test?  

 

Java machine test uses a coding simulator to evaluate a candidate’s written codes using multiple test cases. You will also get a detailed report for each test case execution. You can reduce hiring costs by 45%. 

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How it works

Test Summary

Assessing candidates with our machine test for Java developers is secure and reliable. You can use our role-based access control feature to restrict system access based on the roles of individual users within the recruiting team. Features like window violation and webcam proctoring help detect cheating during the test.  

Practical tests for Java may contain Coding Simulation Questions and Innovative AI-LogicBox to assess a candidate's practical coding skills in a fun and quick way.

Test Duration
40
No. of Questions
2
Level of Expertise
Entry-level/Mid/Senior
Useful for hiring
  • Mid-Level Developer-Java
  • Experienced Java Programmer
  • Java Developer with 2 to 5 years of experience
Topics Covered
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Sample Question
Choose from our 100,000+ questions library or add your own questions to make powerful custom tests.

Question types :

Multiple Option

Topic:

Difficulty:

Hard


Q 1. You have been asked to train « Naive Bayes model for spam detection dataset

Using Python command, what wil you add in the given code at XXXX to deciore, it and train your modal for the given dataset?

import numpy os np

X= nporroyll 3. 2b[1 21 [2.21.[3,21)
Y= nporray(fi.a,a.1))

XXXX

from skinamnaive_bayas import

Gaussianna

otf = Gaussianne()

ceataie(x ¥)

from skinamnaive_bayas import

Gaussianna

otf = Gaussianne()

ceataie(x ¥)

from skinamnaive_bayas import

Gaussianna

otf = Gaussianne()

ceataie(x ¥)

from skinamnaive_bayas import

Gaussianna

otf = Gaussianne()

ceataie(x ¥)

Question types :

Multiple Option

Topic:

Machine teaming

Difficulty:

Hard


Q 1. Q2 Lets assume that you have 6 Pandas DataFrome(af) in the below tole.

Index Code Open High
0 AAPL 19877 70074
1 AAPL 19877 70074
2 AAPL 19877 70074
3 AAPL 19877 70074
4 AAPL 19877 70074

When the following commend is executed, what hoppens to the DatoFrome?

df= defiinat()
Y= nporray(fi.a,a.1))

Index Code Open High
0 AAPL 19877 70074
1 AAPL 19877 70074
2 AAPL 19877 70074
3 AAPL 19877 70074
4 AAPL 19877 70074
Index Code Open High
0 AAPL 19877 70074
1 AAPL 19877 70074
2 AAPL 19877 70074
3 AAPL 19877 70074
4 AAPL 19877 70074
it gives an error becouse of the third row which has on empty string.
None of these

Question types :

Coding

Topic:

String Manipulation

Difficulty:

Medium

Question:

Write a code to remove duplicate occurrences of a character in a string.

Input Format
The line contains the string

Output Format
Print the modified string

Sample Inputinvigilation
Sample Output

invglato


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Now my team of 25 recruiters has adopted this measure and it has done wonders for our clients. Thanks to the Customer Success Team of iMocha. They have shared the best practices of quick test creation and also helped us in training all our recruiters for various functionalities of the tool.
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Mobile Programming
FAQ
What is Data Science?
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.NET Design Pattern test helps recruiters to evaluate candidates' ability to work on GOF Decorator Design Pattern to solve recurring design problems and design flexible and reusable object-oriented software

Why use iMocha’s online data science test?
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What are the key skills that recruiter should look for while hiring a Data Scientist?
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What are few interview questions that recruiter/hiring manager should ask while hiring a data scientist?
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How do you assess the data scientists?
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What is Java Coding - Medium Level?
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Java is a multiplatform coding language that is used by programmers to design few implementations through its English-based commands. The first version of Java coding language was introduced in the year 1995 by James Gosling. This coding language is widely used in web development, android apps, big data, etc. Java Coding medium level test is based on the coding questions that helps to assess the intermediate level coding knowledge of the Java developers. The intermediate level Java programmer must have knowledge of some Java build tools and Java web frameworks apart from the basic coding.

What are the intermediate level Java skills recruiter should look for while hiring Java developer?
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You need to consider below key skills while hiring Java developer with medium level coding knowledge:

Technical Skills:

  • Core Java - Medium
  • Serialization in Java
  • Java Frameworks
  • Abstract Classes and Interfaces
  • Java Build Tools
  • Web Technologies
  • Java Testing Tools like Selenium

Soft Skills:

  • Interpersonal Skills
  • Work Ethics
  • Analytical Thinking
  • Good Communication

Why use iMocha’s Java Coding Test- Medium Level?
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iMocha's Java practical test offerings are designed to help tech recruiters/hiring managers assess candidates on various experience levels (Entry level, intermediate and experienced). Java coding test –medium level is an assessment which includes some medium level coding questions that will help recruiters to:

  • Reduce hiring time up to 50% with automated Java machine test
  • Reduce 85% of candidate filtration time
  • Take data driven hiring decisions with comprehensive and comparative reports of the assessments

What are few interview questions that recruiter/hiring manager should ask to intermediate level Java developer?
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Here are few interview questions that you can ask to Java developers & predict their technical proficiency:

  1. Explain to me about memory management and garbage collection in Java?
  2. When will you use a transient variable in Java?
  3. What happens if you don't call wait and notify from the synchronized block?
  4. What is transient in Java?
  5. What is autoboxing and auto unboxing?
  6. What are some ways that you could sort a collection?
  7. In Java, how fast is direct lookup in a hash map theoretically, and why is it often slower in reality?
  8. Which two methods do you have to override for an object to be usable as a key in a hash map?
  9. Tell us the details of an interesting problem you worked on. What made it interesting?
  10. How do you work with different teams/departments?
How do you assess intermediate level Java coding skills?
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iMocha's practical test for Java is based on concepts of Java programming which are required for intermediate level Java developer. This assessment includes over 150 intermediate level coding questions to choose from and share it with candidates.

Tech recruiters/hiring managers can utilize features like coding simulators, LogicBox questions, Live coding interviews to assess Java coding skills of the developers. CodeReplay feature helps reviewer to replay screen capture of line-by-line code written by candidate. While, coding simulators comes with several candidate friendly features like default code stubs, intellisense, multiple test cases, so that candidates can focus more on algorithm to solve coding challenges. Hiring managers can use live coding interview to conduct coding assessments real time.

How do you conduct technical skills assessment?
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You can conduct remote technical skills assessments with 4 easy steps with iMocha:

  1. Select from 1000+ technical skills tests or Job role-based assessments from iMocha’s skill library. Ensure test integrity by adding cheating prevention measures like image, audio, video proctoring, and window lock, etc.
  2. Invite candidates through an email by sharing assessment link
  3. Get comprehensive and shareable reports upon completion of the online technical assessment
  4. Identify right candidates for further interviews