Java program to group a string based on their length?

There are following way to group a string based on their length.

• Here we are making List type three group equalsGroup, lessThanGroup and greaterThanGroup..
• Inside groupStringsByLength(List<String> input) method, first we iterate the list.
• we assume make a group of String which number of character is 5.
• Now validate if String length is less than 5 then add this String to lessThanGroup List group.
• else if String length is equals to 5 then add this String to equalsGroup List group.
• else if String length is greater than 5 then add this String to greaterThanGroup List group.
• Print the all list group.

import java.util.ArrayList;
import java.util.List;

public class GroupStringByLength {
	static List<String> lessThanGroup = new ArrayList<String>();
	static List<String> equalsGroup = new ArrayList<String>();
	static List<String> greaterThanGroup = new ArrayList<String>();

	public static void main(String[] args) {
		List<String> list = new ArrayList<String>();

		list.add("Java");
		list.add("hello");
		list.add("Spring Boot");
		list.add("Jsp");
		list.add("Hibernate");
		list.add("Maven");

		groupStringsByLength(list);

		System.out.println("Less Than Group Data :- " + lessThanGroup);
		System.out.println("Equals Group Data :- " + equalsGroup);
		System.out.println("Greater Than Group Data :- " + greaterThanGroup);

	}

	public static void groupStringsByLength(List<String> input) {
		for (String str : input) {
			if (str.length() < 5) {
				lessThanGroup.add(str);
			} else if (str.length() == 5) {
				equalsGroup.add(str);
			} else if (str.length() > 5) {
				greaterThanGroup.add(str);
			}
		}
	}

}

Output :-
Less Than Group Data :- [Java, Jsp]
Equals Group Data :- [hello, Maven]
Greater Than Group Data :- [Spring Boot, Hibernate]