package in.bench.resources.java8.string.methods;

public class CountLengthOfLastWordInString {

	public static void main(String[] args) {

		// 1. test string with commas
		String str = "Java is a powerful language";


		// 1.1 print to console
		System.out.println("Original String :- \n" + str);


		// 2. split String based on space delimiter
		String[] strArray = str.split("\\s");


		// 2.1 length of last word
		int length = strArray[strArray.length-1].length();


		// 2.1 print to console
		System.out.print("\nLength of last word '" 
				+ strArray[strArray.length-1] 
						+ "' is :- \n" 
						+ length);
	}
}

Original String :- 
Java is a powerful language

Length of last word 'language' is :- 
8

package in.bench.resources.java8.string.methods;

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

public class CountLengthOfLastWordInStringUsingJava8 {

	public static void main(String[] args) {

		// 1. List of Strings
		List<String> stringsWithCommas = new ArrayList<>();


		// 1.1 add strings to List
		stringsWithCommas.add("Improve your Habits");
		stringsWithCommas.add("I have no idea");
		stringsWithCommas.add("The matter is clear");
		stringsWithCommas.add("You are a Glutton");
		stringsWithCommas.add("It's up to you");


		// 1.2 print to console
		System.out.println("Original List of String :- \n");
		stringsWithCommas.forEach(str -> System.out.println(str));


		// 2. count length of last word using String.length() method
		System.out.println("\n\nLength of last word :- \n");
		stringsWithCommas
		.stream() // get stream
		.map(str -> str.split("\\s")) // split & convert to String[]
		.peek(strArr -> System.out.print(strArr[strArr.length-1]))
		.map(strArr -> strArr[strArr.length-1].length()) // get length of last word
		.forEach(strLength -> System.out.println("\t\t" + strLength)); // print to console
	}
}

Original List of String :- 

Improve your Habits
I have no idea
The matter is clear
You are a Glutton
It's up to you


Length of last word :- 

Habits		6
idea		4
clear		5
Glutton		7
you		3