Java List sort() Method Guide

In Java, List is an interface rather than a concrete implementation class. The List interface offers a sort method for sorting elements in the list.

There are two forms of overload for the sort method.

1. Sort the list based on the specified comparator. The comparator is a functional interface that defines a method for comparing two elements. This method takes a Comparator object as a parameter, which is used to determine the order of the elements. The comparator can be either an anonymous inner class or a lambda expression.
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3. The code creates a list of integers with values 3, 1, 2 and then sorts the list in ascending order.
4. Sort the list based on the natural order of the elements, which is defined by the Comparable interface implemented by the element class. The element class must implement the compareTo method, which is used to compare the order of two elements.
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6. Sort the list of strings in alphabetical order: List list = Arrays.asList(“c”, “a”, “b”);
   list.sort();

It’s important to note that the List interface is not a sortable collection, only classes that implement the List interface (such as ArrayList) can use the sort method. Additionally, the sort method will directly modify the original list’s order rather than returning a new sorted list.