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Java 8 Online Test
Clock
Test duration:
35
min
Notes
No. of questions:
12
Tie
Level of experience:
Mid/Expert Level

Java 8 Test

23654
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Candidates
Assessed
120
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About

Java 8 Online Test

Core Java online test for experienced candidates helps technical recruiters and hiring managers to effortlessly assess the technical knowledge of senior candidates in Core Java. Java 8 online test is designed and validated by experienced Java experts to assess & hire Core Java developers per industry standards.  

  

Why use iMocha’s core Java online test for experienced?   

  

Core Java online test helps employers in many ways, including hiring job-fit experienced candidates within a short period, taking unbiased employee performance appraisal decisions, and reducing hassles in mass recruitment. This AI-powered Java 8 assessment test reduces technical screening time by 85%.  

Use iMocha's assessment to hire skill fit, remove bias, and save money!
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How it works

Test Summary

Core Java assessment test helps to screen the candidates who possess traits as follows:    

  

  • Extensive experience in implementing object-oriented concepts & knowledge   
  • Ability to use advanced class features like polymorphism, class overriding, and interfacing to develop efficient and reusable code   
  • Strong knowledge of Java 8 Lambda, Streams, Optional, and other Functional interfaces   

Employers can use intelligent & powerful Test Insights that will help to identify job-fit candidates more accurately with score distribution & section analysis features. Assessing candidates with a Core Java online assessment test 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.   

Java 8 online test is designed considering EEOC guidelines; it will help you assess & hire diverse talent without bias.   

 

Java 8 test may contain MCQs (Multiple Choice Questions), MAQs (Multiple Answer Questions), Fill in the Blanks, Whiteboard Questions, Audio / Video Questions, LogicBox (AI-based Pseudo-Coding Platform), Coding Simulators, True or False Questions, etc. 

Test Duration
35
No. of Questions
12
Level of Expertise
Mid/Expert Level
Useful for hiring
  • Senior Java Developers
  • Java Expert
  • Java Programmers
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 :

Multiple Option

Topic:

Synchronization

Difficulty:

Easy

Question:

You are working with threads where a deadlock occurs. Which of the following statements will be correct in this scenario?


Options

  • Threads calling static synchronized methods in the same class won&#39;t lock each other.<br />&nbsp;
  • It occurs when a non-static synchronized method is invoked in the same class by using two different instances.<br />&nbsp;
  • A static synchronized method and non-static method will always block each other.<br />&nbsp;
  • It occurs when two threads callThread join() on each other.<br />&nbsp;
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FAQ
What is Data Science?
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