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

import java.util.Scanner;

public class CheckForPalindrome {

	public static void main(String[] args) {

		StringBuffer targetStr=new StringBuffer("");
		Scanner inpStr=new Scanner(System.in);
		System.out.print("Enter an input string= ");
		String strInput=inpStr.next();

		/* Add each character of the string to the String Buffer,
		 * If same character appears again delete from the String Buffer, 
		 * continue this process until the entire input string processed*/
		for(int i=0;i<strInput.length();i++) {
			int indexVal=targetStr.indexOf(String.valueOf(strInput.charAt(i)));
			if (indexVal >= 0)
				targetStr.deleteCharAt(indexVal);
			else 
				targetStr.append(strInput.charAt(i));
		}
		/* As per the logic String Buffer must contains 0 or 1 character,
		 * to form the Palindrome string from the given string */
		if (targetStr.length()<=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();
	}
}