Scala & Spark-Master Big Data with Scala and Spark - Check Key in Map

The video tutorial explains how to check if a key is present in a map, emphasizing its importance in decision-making and logic implementation. It demonstrates the process using an IDE, providing practical examples with keys 'A' and 'C'. The tutorial concludes by summarizing the key checking process and hints at the next topic of updating key-value pairs in a map.

What method is used to check if a key is present inside a map?

Explain the process of checking if a key exists in a map and what happens if it does.

What will be printed if the key 'A' is present in the map?

Describe what happens when checking for a key that is not present in the map.

How can the contains method be useful in decision-making when working with maps?