java stack of chars

/**
 * @author lautturi.com 
 * Java example: define a char stack in java
 */

import java.util.*;
import java.util.regex.Pattern;

public class Lautturi {
	public static void main(String[] args){
		
		Stack<Character> stack = new Stack<Character>();
		
		stack.push('A');
		stack.push('B');
		stack.push('C');
		stack.push('D');

		System.out.println(stack);
		
	}
}

output:

[A, B, C, D]