public static void main(String[] args) {

String str = "Java Community Edition";

String reverseStr = new StringBuilder(str).reverse().toString();

System.out.println("Original String: " + str);

System.out.println("Reversed String: " + reverseStr);

//Without built in functions

char[] strArray = str.toCharArray();

String reversed = "";

for (int i = strArray.length - 1; i >= 0; i--) {

reversed += strArray[i];

}

System.out.println("Reversed String: " + reversed);

// Using Java 8 Steams library

String input = "Hello This is a Java Community Edition";

String reversedString = IntStream.range(0, input.length())

.mapToObj(i -> input.charAt(input.length() - 1 - i))

.map(String::valueOf)

.collect(Collectors.joining());

System.out.println("Reversed: " + reversedString);

//Using Java 8 Functional reduce() method

String reversedString2 = Stream.of(input.split(" ")) // Reduce the space b/w Line 24

.reduce("", (a, b) -> b + a);

System.out.println("Reversed: " + reversedString2);

//Using chars() Stream (Java 8+)

String input1 = "Hello";

String reversed3 = input1.chars()

.mapToObj(c -> (char) c)

.reduce("", (s, c) -> c + s, (s1, s2) -> s2 + s1);

System.out.println("Reversed: " + reversed3);

}