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Java Software Engineer Interview Questions

"Java software engineers design, build, and maintain systems that support and run java applications. Employers are looking for candidates who display strong organizational and communication skills as well as advanced technical skill within the java universe. During an interview, expect to answer a lot engineering questions as well as discuss past projects you have worked on."

30,825 java software engineer interview questions shared by candidates

round 1: Why coming to Berlin from India? Why Zalando? What do you know about Zalando? Salary expectations? Do you have any questions? round 2: Tell me about about a situation when there has been a conflict between you and your colleague, how you resolved it. Tell me about about a situation when there has been a conflict between two of your colleagues, they approached how you resolved it. How do you convince people to choose a technology? Tell me about about a situation when you went against odds / didn't listen to your manager. How you convince people to help you with technical issues. Tell me about about a situation which proves you are motivated to take up challenges and learn new technologies. How you choose a a particular technology/solution from among multiple technologies/solutions.
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Back End Developer (Java)

Interviewed at Zalando

3.6★
Nov 22, 2015

round 1: Why coming to Berlin from India? Why Zalando? What do you know about Zalando? Salary expectations? Do you have any questions? round 2: Tell me about about a situation when there has been a conflict between you and your colleague, how you resolved it. Tell me about about a situation when there has been a conflict between two of your colleagues, they approached how you resolved it. How do you convince people to choose a technology? Tell me about about a situation when you went against odds / didn't listen to your manager. How you convince people to help you with technical issues. Tell me about about a situation which proves you are motivated to take up challenges and learn new technologies. How you choose a a particular technology/solution from among multiple technologies/solutions.

aptitude are from number series and mixtures, C,C++ are from pointers Java from Threads, In programming round they asked, Program to print matrix in spiral form, Program to reverse vowels alone in a given string program to push all zeros to right side in an array and order should be maintained program to print name in a list like below if list contains 10-20 strings and if input is like c*i o/p should print all string in a list contains words starting with 'c' and ending with 'i' eg: list = [chennai, covai, madurai, delhi, dubai, mumbai] then if i/p = c*i o/p-->> chennai, covai if i/p = d*i o/p --->> dubai, delhi
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Java Developer

Interviewed at Zoho

4.2★
Feb 23, 2017

aptitude are from number series and mixtures, C,C++ are from pointers Java from Threads, In programming round they asked, Program to print matrix in spiral form, Program to reverse vowels alone in a given string program to push all zeros to right side in an array and order should be maintained program to print name in a list like below if list contains 10-20 strings and if input is like c*i o/p should print all string in a list contains words starting with 'c' and ending with 'i' eg: list = [chennai, covai, madurai, delhi, dubai, mumbai] then if i/p = c*i o/p-->> chennai, covai if i/p = d*i o/p --->> dubai, delhi

Implement a method 'find' that will find the starting index (zero based) where the second list occurs as a sub-list in the first list. It should return -1 if the sub-list cannot be found. Arguments are always given, not empty. Sample Input 1 list1 = (1, 2, 3) list2 = (2, 3) Sample Output 1 1 Explanation As second list (2, 3) is sub-list in first list (1, 2, 3) at index 1 Sample Input 2 list1 = (1, 2, 3) list2 = (3, 2) Sample Output 2 -1
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Senior Java Developer

Interviewed at Atlassian

3.1★
Apr 13, 2016

Implement a method 'find' that will find the starting index (zero based) where the second list occurs as a sub-list in the first list. It should return -1 if the sub-list cannot be found. Arguments are always given, not empty. Sample Input 1 list1 = (1, 2, 3) list2 = (2, 3) Sample Output 1 1 Explanation As second list (2, 3) is sub-list in first list (1, 2, 3) at index 1 Sample Input 2 list1 = (1, 2, 3) list2 = (3, 2) Sample Output 2 -1

String,String buffer,String builder difference. Can u write your own immutable class n how? hashmap implementation and hashcode(),equals() method he asked me to write 2 logical testing programs with reduced complexity( 0,1,1,2,4,5,3,3,1,0,1 traverse once only n get the duplicate number's along with the count). printing pascal triangle duplicate letter from a string with less complexity reversing words of string individually(this is a tree---o/p: siht si a eert)
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JAVA DEVELOPER

Interviewed at Oracle

3.5★
May 25, 2015

String,String buffer,String builder difference. Can u write your own immutable class n how? hashmap implementation and hashcode(),equals() method he asked me to write 2 logical testing programs with reduced complexity( 0,1,1,2,4,5,3,3,1,0,1 traverse once only n get the duplicate number's along with the count). printing pascal triangle duplicate letter from a string with less complexity reversing words of string individually(this is a tree---o/p: siht si a eert)

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