Globant Java Developer Interview Questions and Answers

Q1. Basic Questions about Springboot
Add your answer
Q2. Basic Questions about Java8
Add your answer

General Aptitude round based on numbers,verbal,time

Any language u can use but need to solve 5 problems

Q1. What is checked unchecked exceptions?
Ans. 
Checked exceptions are exceptions that must be declared in a method's signature or handled using try-catch blocks.
• Checked exceptions are checked at compile-time.

• They are typically used for exceptional conditions that can be reasonably recovered from.

• Examples of checked exceptions in Java include IOException, SQLException, and ClassNotFoundException.
Answered by AI
View 1 more answer
Q2. How to remove duplicated form from array list?
Ans. 
To remove duplicates from an ArrayList of strings, use a HashSet to store unique elements.
• Create a HashSet and add all elements from the ArrayList to it.

• Create a new ArrayList and add all elements from the HashSet to it.

• The new ArrayList will contain only unique elements.
Answered by AI
View 3 more answers
Q3. How hashset and hashmap work internally?
Ans. 
HashSet and HashMap are both data structures in Java that use hashing to store and retrieve elements.
• HashSet uses HashMap internally to store its elements as keys with a dummy value.

• HashMap uses an array of linked lists called buckets to store key-value pairs.

• Both HashSet and HashMap use the hashCode() method to calculate the hash value of keys.

• HashSet uses the hash value to determine the bucket where an element should...read more
Answered by AI
View 1 more answer
Q4. Find sum of all odd numbers in a list using stream?
Ans. 
Using Java stream, find the sum of all odd numbers in a list.
• Use the filter() method to filter out the odd numbers from the list.

• Use the mapToInt() method to convert the filtered numbers to integers.

• Use the sum() method to calculate the sum of the filtered odd numbers.
Answered by AI
View 1 more answer