How to extract characters and numbers from an Alphanumeric value

import java.util.Scanner;
import java.util.function.Predicate;

public class Alphanumeric {

	public static void main(String[] args) {

		Scanner inpAlphaNumeric = new Scanner (System.in);
		StringBuilder strNumbers=new StringBuilder();
		StringBuilder strLetters=new StringBuilder();

		//Defining three Predicates
		Predicate<Character> lowercaseChar = (ch) -> ch >='a' && ch <='z';
		Predicate<Character> uppercaseChar = (ch) -> ch >='A' && ch <='Z';
		Predicate<Character> numberChar = (ch) -> ch >='0' && ch <='9';

		System.out.println("Enter an alpha numeric string (Ex:- H93Wkq61f)");
		String inpStr=inpAlphaNumeric.next();
		int strLen=inpStr.length();

		//Comparing within the range of ASCII's of Alphabets and Numbers
		while (--strLen >= 0) {
			if (uppercaseChar.or(lowercaseChar).test(inpStr.charAt(strLen)))
				strLetters.append(inpStr.charAt(strLen));
			else
				if (numberChar.test(inpStr.charAt(strLen)))
					strNumbers.append(inpStr.charAt(strLen));
		}
		inpAlphaNumeric.close();
		System.out.println("The string of characters extracted from "+inpStr+" is="+strLetters.reverse().toString());
		System.out.println("The string of numbers extracted from "+inpStr+" is="+ Integer.valueOf(strNumbers.reverse().toString()));
		System.out.println("Add 1 to the Extracted number "+Integer.valueOf(strNumbers.toString())+" + "+"1="+(Integer.valueOf(strNumbers.toString())+1));
	}
}