How Can Java 8\'s `Collectors.groupingBy` Method Efficiently Group Objects by Attribute?

Grouping Objects by Attribute

Consider a scenario where you have a list of objects and need to organize them based on a specific attribute. Take, for instance, a list of students where you want to group them based on their locations.

In this case, you could have a list of students as follows:

To group these students by their location, you can use Java 8's Collectors.groupingBy method, as demonstrated below:

This line of code groups the students in the studlist by their stud_location attribute, resulting in a map where keys are locations (e.g., "New York") and the corresponding values are lists of students who belong to those locations.

This approach provides a concise and effective way to group objects based on a specified attribute, helping you organize and analyze data efficiently.

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