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Deutsche Telekom Senior Java Developer Interview Questions, Process, and Tips for Experienced

Updated 20 Oct 2023

Deutsche Telekom Senior Java Developer Interview Experiences for Experienced

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Senior Java Developer Interview Questions & Answers

user image Mohammad Siddiq

posted on 20 Oct 2023

Interview experience
3
Average
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via Naukri.com and was interviewed in Sep 2023. There were 2 interview rounds.

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
View all tips
Round 2 - Technical 

(5 Questions)

  • Q1. Difference btwn jdk , jre and jvm
  • Ans. 

    JDK is a development kit that includes JRE and tools for developing Java applications. JRE is a runtime environment for executing Java programs. JVM is a virtual machine that runs Java bytecode.

    • JDK (Java Development Kit) includes JRE (Java Runtime Environment) and development tools like compiler and debugger.

    • JRE (Java Runtime Environment) is a software package that provides the libraries and components necessary for ru...

  • Answered by AI
  • Q2. Difference btwn static and volatile
  • Ans. 

    Static variables are shared among all instances of a class, while volatile variables are used to indicate that a variable's value will be modified by different threads.

    • Static variables are initialized only once at the start of the program and retain their value throughout the program's execution.

    • Volatile variables are used to ensure visibility of changes to variables across multiple threads.

    • Static variables are accesse...

  • Answered by AI
  • Q3. What is final keyword
  • Ans. 

    Final keyword is used in Java to declare constants, prevent method overriding, and prevent class inheritance.

    • Used to declare constants - value cannot be changed once assigned

    • Prevents method overriding - method cannot be overridden in child classes

    • Prevents class inheritance - class cannot be extended

  • Answered by AI
  • Q4. Difference btwn paralle stream and stream
  • Ans. 

    Parallel stream allows processing elements concurrently, while stream processes elements sequentially.

    • Parallel stream can improve performance by utilizing multiple threads for processing.

    • Stream processes elements one by one in a sequential manner.

    • Example: stream().parallel() vs stream().sequential()

  • Answered by AI
  • Q5. What is stream used for
  • Ans. 

    Streams are used in Java to process collections of objects in a functional style.

    • Streams allow for concise and readable code when working with collections.

    • They support operations like filter, map, reduce, and collect.

    • Streams can be sequential or parallel, depending on the processing requirements.

    • Example: List names = Arrays.asList("Alice", "Bob", "Charlie"); names.stream().filter(name -> name.startsWith("A")).forEach(S

  • Answered by AI

Skills evaluated in this interview

Interview questions from similar companies

I was interviewed in Jul 2017.

Interview Questionnaire 

1 Question

  • Q1. Android basics and programs

Interview Preparation Tips

Round: Resume Shortlist
Experience: Resume shortlisted on the basis of 60% through out and experience in development more than 6 months.

Round: Technical Interview
Experience: Core java.. String, oops, exception,

Round: HR Interview
Experience: As usual.. tell me about your self.expectations and salary discussion.
Tips: Be confident whatever you say.

I was interviewed in Apr 2017.

Interview Questionnaire 

2 Questions

  • Q1. What is firmware and where it is used?
  • Ans. 

    Firmware is a type of software that is embedded in hardware devices to control their functionality.

    • Firmware is a combination of hardware and software.

    • It is used to control the behavior of hardware devices.

    • Firmware is typically stored in non-volatile memory, such as ROM or flash memory.

    • Examples of devices that use firmware include routers, printers, and digital cameras.

  • Answered by AI
  • Q2. Tell me about yourself only.
  • Ans. 

    I am a passionate software developer with experience in building web applications and solving complex problems.

    • Experienced in programming languages such as Java, JavaScript, and Python

    • Familiar with front-end technologies like HTML, CSS, and React

    • Strong problem-solving skills and ability to work in a team environment

    • Previous projects include developing a customer management system for a small business

  • Answered by AI

Interview Preparation Tips

Round: aptitude
Experience: the test had around 70 questions to be answered in 1 hour
Tips: keep watch on time and be quick enough because each sections has sectional cutoff.

Round: Technical Interview
Experience: the test had around 70 questions to be answered in 1 hour
Tips: keep watch on time and be quick enough because each sections has sectional cutoff.

Round: HR Interview
Experience: they tested my core knowledge and learning skill.
Tips: be strong in your basics.

Skills: Ability To Think Beyond Boundaries
College Name: mnm jec

Skills evaluated in this interview

I applied via Campus Placement

Interview Preparation Tips

Round: Test
Total Questions: 100

Round: Group Discussion
Duration: 15 minutes

Skill Tips: Infosys Internship program is structured very similar to Infosys Foundation Program. In both programs, the course is divided into two parts -
Generic Training and Stream Training. Generic Training will be based on Computer Science' fundamental subjects like OOPs using Java, RDBMS using Oracle, Software Engineering, Internetworking and Operating Systems. Stream specific training will be based on a certain technology like J2EE, DOT NET, Mainframe, SAP etc.

If you're unable to pass the internship program, you can join Infosys as a Systems Engineer trainee after you complete your engineering course and can undergo Infosys Foundation Program. Accommodation is free while going through internship program. You need to pay for food and for other amenities like Gym and Sports facilities.
The monthly stipend during internship program is INR 8000. Advantages for opting internship program is Infosys internship program would help you to undergo the initial training course while joining Infosys. So, if you successfully complete the internship program, you need not to attend the Foundation training in Infosys. So, when you rejoin infosys after completing your b.tech course, you would join as an employee, not as a trainee. It will help you get into production much advanced to other people who go through Foundation Program. After you complete your engineering course Infosys will communicate you with a date to rejoin the organization.
After you complete your internship and get posting location. When you rejoin Infosys, you have to report to that office only. Need not to come to Mysore or Mangalore again for reporting.
Once you join for internship program, you have to sign a bond and if you do not opt to rejoin Infosys then you need to consider the consequences as per the rules written in the bond like paying some amount.
One advantage of successfully clearing internship program is that you need not to go through Foundation program in Infosys. Both have equal weightage in Infosys. Scope of learning is same in both type of training.
Skills: Algorithms And Data Structures
Duration: 3
College Name: Government College of Engineering and Technology, Bikaner

Software Developer Interview Questions & Answers

Infosys user image Sarath Kumar Mutnuru

posted on 5 Apr 2016

I applied via Campus Placement

Interview Preparation Tips

Round: Resume Shortlist
Experience: I added the relevant course work and tried to remove the data that is not related to the position seeked
Tips: Make resume more point oriented rather than bulky matter

Round: Technical Interview
Experience: I was very cool and calm at the time of interview and did a ground work of company income and stuff like that
Tips: Be thorough with the concepts you think they would ask

General Tips: be clam and confident. Everythinng will fall in place and its never too late
Skills: Basics Of Machine Learning
Duration: 2
College Name: IIT Madras
Motivation: varied project fields and well planned program
Funny Moments: The call came ,when I was fully out of hope that Infosys would consider me,But I knew I was eligible and deserving

I was interviewed before Aug 2016.

Interview Questionnaire 

3 Questions

  • Q1. Questions from the resume submitted
  • Q2. Write a java program to find the palindrome
  • Q3. HR questions were at the end

Interview Preparation Tips

Round: Test
Experience: Need to solve the general aptitude question, general verbal questions like paragraphs and sentence completion.
Duration: 3 hours
Total Questions: 80

Skills: Programming, Coming Up With Efficient Solutions, Manage A Difficult Situation

Skills evaluated in this interview

I was interviewed before Nov 2016.

Interview Questionnaire 

2 Questions

  • Q1. Project related questions and questions from your stream that you had in Btech.
  • Q2. Basic questions about yourself and your aspirations in life.

Interview Preparation Tips

Round: Test
Experience: English, Quant, Reasoning basic MCQ
Tips: English strong and time management
Duration: 1 hour
Total Questions: 100

Round: Technical Interview
Experience: I was from electronics and comm background so was asked about Signals Analog and Digital, Also was asked about my project that i did in my final year and some of the DBMS and C programming questions asked.
Tips: Must know basic about your own stream first of all , what ever you did in 4 years of your engineering must have a idea about it.

Round: HR Interview
Experience: Tell me something about yourself, where do you see yourself after 5 years,
Your likes dislikes .
Tips: Basically they what to check how confident are you in answering the questions and how frequently do you talk to strangers and how do you talk what is your attitude and behavior , so be the best that you can and be what you are.

Software Developer Interview Questions & Answers

Infosys user image Ankit Singh Rajpoot

posted on 3 Oct 2017

I was interviewed in Jan 2017.

Interview Questionnaire 

1 Question

  • Q1. About my Family Members

Interview Preparation Tips

Round: Test
Experience: apti+Tech
Duration: 45 minutes

Round: Group Discussion
Experience: Described reasons
Duration: 15 minutes

Round: Technical Interview
Experience: Technical Questions were there related to my branch and tech

Skills: Technical Knowledge(ML, Aptitude, Presence Of Mind
College Name: Mahakoshal College Jbp.

I was interviewed in Apr 2017.

Interview Questionnaire 

1 Question

  • Q1. Basics of oops, multithreading,collections..

Interview Preparation Tips

Round: Technical Interview
Experience: I cleared this round.
Tips: please brush up your basics in core java,spring,hibernate.

Skills: Java Application Development

I was interviewed in Aug 2017.

Interview Preparation Tips

Round: Test
Tips: Practice e litmus questions and also give mock tests on placement season
Duration: 2 hours

Round: Technical + HR Interview
Experience: The interviewer asked me questions from the subjects I mentioned in my CV and also asked so many situational questions like what will you do in this situation etc.

Skills: Presence Of Mind, Technical Skill

Deutsche Telekom Interview FAQs

How many rounds are there in Deutsche Telekom Senior Java Developer interview for experienced candidates?
Deutsche Telekom interview process for experienced candidates usually has 2 rounds. The most common rounds in the Deutsche Telekom interview process for experienced candidates are Resume Shortlist and Technical.
What are the top questions asked in Deutsche Telekom Senior Java Developer interview for experienced candidates?

Some of the top questions asked at the Deutsche Telekom Senior Java Developer interview for experienced candidates -

  1. difference btwn paralle stream and str...read more
  2. Difference btwn jdk , jre and ...read more
  3. what is final keyw...read more

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Deutsche Telekom Senior Java Developer Interview Process for Experienced

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