How to check a string can be eligible to form a palindrome

import java.util.HashMap;
import java.util.Scanner;

public class CheckPalindromeStr {

	public static void main(String[] args) {

		HashMap<Character, Integer> hmCharsCount = new HashMap<Character, Integer>();
		Scanner inpStr=new Scanner(System.in);
		System.out.print("Enter an input string= ");
		String strInput=inpStr.next();

		/* Add each character occurrence of the string to the Hash map,
		 * If same character appears delete it from the Hash map, 
		 * continue this process until the entire input string processed*/
		for(int i=0;i<strInput.length();i++) 
			if(!hmCharsCount.containsKey(strInput.charAt(i)))
				hmCharsCount.put(strInput.charAt(i), 1);
			else
				hmCharsCount.remove(strInput.charAt(i));

		/* As per the logic Hash map must contains 0 or 1 character,
		 * to form the palindrome string from te given string */
		if (hmCharsCount.size()<=1)
			System.out.println("The string "+strInput+" can be rearranged as a Palindrome");
		else
			System.out.println("The string "+strInput+" can not be rearranged as a Palindrome");

		inpStr.close();
	}
}