Find all Palindrome String in given Array of string in Java8

To find all Palindrome String in given Array of string in Java 8, we are using the Stream api function.

• Create an Array of string data.
• Add this array to a list.
• Now this list to stream using arrayList.stream() method.
• The StringBuilder’s reverse() method is used to reverse the string.
• Inside filter, original string is compared to reversed string to find the if it is a palindrome.
• From collect() method, we collect all the palindrome string.
• Print all the palindrome string.

import java.util.Arrays;
import java.util.List;
import java.util.stream.Collectors;

public class PalindromeTest {
	public static void main(String[] args) {

		String arr[] = { "spring", "radar", "java", "try", "madam" };
		List<String> list = Arrays.asList(arr);
		List<String> palindromeString = list.stream().filter(r -> r.equals(new StringBuilder(r).reverse().toString()))
				.collect(Collectors.toList());
		System.out.println("Print all the palindromes string are :- " + palindromeString);
	}
}

Output :-
Print all the palindromes string are :- [radar, madam]