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I applied via Naukri.com and was interviewed in Aug 2023. There was 1 interview round.
I applied via Naukri.com and was interviewed before Sep 2020. There were 3 interview rounds.
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I applied via Naukri.com and was interviewed in Oct 2017. There were 5 interview rounds.
HashMap is not synchronized and allows null values, while Hashtable is synchronized and does not allow null values.
HashMap is faster and preferred for non-thread-safe operations.
Hashtable is slower but thread-safe.
HashMap allows null values, while Hashtable does not.
HashMap is not synchronized, so it is not suitable for concurrent operations.
Hashtable is synchronized, making it suitable for concurrent operations.
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I applied via Naukri.com and was interviewed before Aug 2020. There were 4 interview rounds.
I applied via Campus Placement and was interviewed before Oct 2020. There were 5 interview rounds.
I applied via Campus Placement and was interviewed before Sep 2021. There were 2 interview rounds.
I applied via Company Website and was interviewed before Jun 2020. There were 4 interview rounds.
Constructor is a special method that is called when an object is created.
Constructors have the same name as the class they belong to.
They are used to initialize the object's state.
They can take parameters to set initial values.
If a class does not have a constructor, a default one is provided.
Example: public class Person { public Person(String name) { this.name = name; } }
Triggers are special stored procedures that are automatically executed in response to certain events or actions in SQL.
Triggers can be used to enforce business rules and data integrity.
They can be used to audit changes to data.
Triggers can be used to replicate data to other tables or databases.
They can be used to send notifications or alerts based on certain conditions.
Examples of events that can trigger a trigger incl
Sorting an array of strings without using inbuilt function.
Implement bubble sort algorithm
Compare adjacent elements and swap if necessary
Repeat until no more swaps are needed
I applied via Campus Placement and was interviewed before Apr 2021. There were 2 interview rounds.
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