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HashMap is a data structure in Java that stores key-value pairs and allows for fast retrieval of values based on keys.
HashMap implements the Map interface in Java.
Keys in a HashMap must be unique, but values can be duplicated.
HashMap allows for null keys and null values.
HashMap is not synchronized, so it is not thread-safe. To make it thread-safe, you can use ConcurrentHashMap.
Example: HashMap
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I applied via Recruitment Consulltant and was interviewed in Jan 2024. There were 3 interview rounds.
Assignment with MCQ questions with platform codingGame /CoderPad with 3 Coding questions with 10 10 10 mins for each and some MCQ questions to be answered within 15-40 sec on the basis of questions reading speed
I applied via Recruitment Consulltant and was interviewed in Jan 2024. There were 3 interview rounds.
Assignment with MCQ questions with platform codingGame /CoderPad with 3 Coding questions with 10 10 10 mins for each and some MCQ questions to be answered within 15-40 sec on the basis of questions reading speed
I applied via Recruitment Consulltant and was interviewed before Mar 2023. There were 3 interview rounds.
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