Birdeye Interview Questions and Answers

Q1. Javascript basic question asked like closure hoisting some output based question
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Q1. React app optimization and advanced hooks
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Q1. General programming discussion, class, abstract class, interface, design question, nodeJs theory
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Q1. What is the difference between final, finalize and finally?
Ans. 
final is a keyword used to declare constants, finalize is a method used for cleanup operations, and finally is a block used for exception handling.
• final is a keyword in Java used to declare constants that cannot be changed, like final int x = 10;

• finalize is a method in Java used for cleanup operations before an object is garbage collected, like protected void finalize() {...}

• finally is a block in Java used for exceptio...read more
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Q2. What is the difference between POST and PUT HTTP method?
Ans. 
POST is used to create a new resource, while PUT is used to update an existing resource.
• POST is non-idempotent, meaning multiple identical requests will create multiple resources.

• PUT is idempotent, meaning multiple identical requests will have the same effect as a single request.

• POST is often used for creating new records in a database.

• PUT is often used for updating existing records in a database.
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Q3. What does System.exit() do?
Ans. 
System.exit() is a method in Java that terminates the currently running Java Virtual Machine.
• System.exit() terminates the JVM and shuts down the program immediately.

• It takes an integer argument as an exit status code.

• Calling System.exit(0) indicates successful termination.

• System.exit(1) or any non-zero value indicates abnormal termination.
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Q4. Coding question on switch statement
Ans. 
A switch statement allows multi-way branching based on the value of a variable.
• Switch statements evaluate an expression and execute code based on matching case labels.

• Example: switch (day) { case 1: console.log('Monday'); break; }

• Default case can be used to handle unexpected values.

• Switch statements can improve code readability compared to multiple if-else statements.
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Q5. Algorithm to find the element in an array such that sum of elements on either side of the element are equal
Ans. 
Algorithm to find element in array with equal sum on both sides
• Iterate through array and calculate sum of elements on left and right side of each element

• Compare sums on both sides for each element to find the desired element

• Return the element if found, otherwise return -1
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I was asked to create a custom hook and i also create a dynamic react compenet which renders nested data.