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How do I reverse String of characters using a Stack class in Java ?

Program to reverse a string of characters using a Stack class in Java

class CharacterStack {

   private char[] stackArray;
   private int topOfStack;

   public CharacterStack( int capacity ) {
 stackArray = new char[capacity];
 topOfStack = -1;
   }

   public void push( char element ){
 stackArray[++topOfStack] = element;  
   }

   public char pop(){
 return stackArray[topOfStack--];
   }

   public char peek(){
 return stackArray[topOfStack];
   }

   public boolean isEmpty(){
 return topOfStack < 0;
   }

   public boolean isFull(){
 return topOfStack == stackArray.length - 1;
   }
}



public class Client {

   public static void main(String[] args) {

 CharacterStack stack = new CharacterStack(50);

 String str = "!tol a sknahT.moc.topsrebbuh detisiv uoy";
 int length = str.length();
 System.out.println("Initial String : " + str);

 for(int i = 0; i < length ; i++ ){
            stack.push(str.charAt(i));
 }

 System.out.println();
 System.out.print("Reversing the String : ");

 while(!stack.isEmpty()){
            System.out.print(stack.pop());
 }

 System.out.println();

    }

}

Output of the program : 


 
 
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