Applied Techno Products Engineer Trainee Interview Questions and Answers

Duration is 45 minutes . This round consists of some mcq on java programming language and sql.

Q1. 1)tell me about yourself. 2)give a brief description about your project. 3)explain oops in detail. 4)explain inheritance with example. spit
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Q2. 5)what is stack?? 6)explain ArrayList 7) what is split method in java string class
Ans. 
Questions related to basic programming concepts in Java.
• Stack is a data structure that follows the Last-In-First-Out (LIFO) principle.

• ArrayList is a dynamic array that can grow or shrink in size and is part of the Java Collections Framework.

• The split() method in Java String class is used to split a string into an array of substrings based on a delimiter.
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Q3. Write a java program to revers the string (for eg :"this is string" is string so revers should be : string is this)
Ans. 
Java program to reverse a string
• Use StringBuilder class to reverse the string

• Convert the string to StringBuilder object

• Use reverse() method of StringBuilder class to reverse the string

• Convert the StringBuilder object back to string
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