Question

Concepts StringBuilder Var-Args Programming Assignment Palindrome Checker - A palindrome is a string that is the same forwards as backwards. For example, the following strings are palindromes: " ", "a", "aa", "bb", "aba", "bab", "bob" These are not: "ab", "ba", "bba", "abb" Use StringBuilder concept to create a palindrome checker. The method will be called palindromChecker and it will use the var-arg concept to accept 1 to many Strings. The class name for this program is Palindrome.

Answer 1

class Palindrome{

//palindromeChecker method takes zero or more string arguments and prints message accordingly

public static boolean palindromeChecker(String ...str){

for(String s : str){ //takes string one by one

StringBuilder sb = new StringBuilder(s); //creates a stringbuilder for s

sb.reverse(); //reverses the sb

//if any of the string is not palindrome then returns false

if(!s.equals(sb.toString())){

return false;

}

}

return true; //if every string is palindrome then returns true.

}

}

class TestPalindrome{ //driver class named TestPalindrome

//main method takes values passed by command line arguments into args

public static void main(String []args) {

Palindrome palindrome = new Palindrome(); //created an object for Palindrome class

boolean result = palindrome.palindromeChecker("bob", "Sue", "aaa", "Gossai"); //calls palindromeChecker method

System.out.println("All strings entered were palindromes: " + result); //prints the result to user.

}

}

OUTPUT: