Sort List in Java using JAVA 8 different ways.

During a project development , every developer comes across a situation where implementation of sorting becomes mandatory. In this article we will mainly focus on sorting using java 8.

Example 1 : Sort a list of String alphabetically.

List<String> names = Arrays.asList("Vivek", "nasim", "Sumit", "gaurav", "Mohit");

Print names in sorting order , now here we will use Comparator to sort a list.

names.sort(Comparator.naturalOrder());

OUTPUT : sorting with natural order : [Mohit, Sumit, Vivek, gaurav, nasim]

naturalOrder() method first place all capital letter names after that small case letter names. So, we can use CASE_INSENSITIVE_ORDER, which return a case insensitive order.

names.sort(String.CASE_INSENSITIVE_ORDER);

OUTPUT : sorting with case Insenesitive : [gaurav, Mohit, nasim, Sumit, Vivek]

Sort A List of Integer :

List<Integer> numbers = Arrays.asList(10, 8, 5, 2, 13, 2);
numbers.sort(Comparator.naturalOrder());

Sorting With Lambda Expression :

List<Employee> employees = Arrays.asList(
        new Employee("Sumit", 18, 2000),
        new Employee("Karan", 23, 6000),
        new Employee("Arjun", 25, 4000)
);

employees.sort((Employee e1, Employee e2) ->
        e1.getName().compareTo(e2.getName()));

OUTPUT …