4. In JAVA language strings are immutable, so how can you reverse a string. Write a JAVA program to input a string and reverse the string. Display the original and reversed string in the output.

if strings are immutable, like in Java, we can assume that they have a static length  True  False

Write a Java Program to take a string from the user and your task is to print the length of the longest palindromic string which can be formed from the user. per string character.

I need help with this Java problem as it's explained in the image below:  Palindrome (Deque) A palindrome is a string that reads the same backwards and forwards. Use a deque to implement a program that tests whether a line of text is a palindrome. The program reads a line, then outputs whether the input is a palindrome or not.   Ex: If the input is: senile felines!   the output is: Yes, "senile felines!" is a palindrome.     Ex: If the input is: rotostor   the output is: No, "rotostor" is not a palindrome.   Ignore punctuation and spacing. Assume all alphabetic characters will be lowercase. Special case: A one-character string is a palindrome. Hint: The deque must be a Deque of Characters, but ordinary chars will be automatically converted to Characters when added to the deque.   Java Code:    import java.util.Scanner; import java.util.LinkedList; import java.util.Deque; public class LabProgram {       public static void main(String[] args) {         Scanner scnr = new…

8. Write a JAVA program to read input a string s from the user and find the sum of all the digits in the string s.