@@ -0,0 +1,338 @@
+package vm;%0A%0Apublic class Stack %7B%0A    private char%5B%5D stack;%0A    private int stackPointer;%0A%0A%0A    public Stack(int size) %7B%0A        stack = new char%5Bsize%5D;%0A        stackPointer = -1;%0A    %7D%0A%0A    public void push(char value) %7B%0A        stack%5B++stackPointer%5D = value;%0A    %7D%0A%0A    public char pop() %7B%0A        return stack%5B--stackPointer%5D;%0A    %7D%0A%7D%0A

Add simple stack implementation