public static void main(String[] args) {
Table<Integer> t = new Table<Integer>();
t.put(Symbol.symbol("abc"), new Integer(1));
t.put(Symbol.symbol("efg"), new Integer(2));
System.out.println(t.get(Symbol.symbol("efg")));
System.out.println(t.get(Symbol.symbol("")));
t.put(Symbol.symbol("efg"), new Integer(3));
System.out.println(t.get(Symbol.symbol("efg")));
t.beginScope();
System.out.println(t.get(Symbol.symbol("efg")));
t.put(Symbol.symbol("efg"), new Integer(4));
System.out.println(t.get(Symbol.symbol("efg")));
t.put(Symbol.symbol("efg"), new Integer(5));
System.out.println(t.get(Symbol.symbol("efg")));
t.put(Symbol.symbol("new"), new Integer(6));
System.out.println(t.get(Symbol.symbol("d")));
System.out.println(t.get(Symbol.symbol("new")));
t.endScope();
System.out.println(t.get(Symbol.symbol("efg")));
System.out.println(t.get(Symbol.symbol("new")));
}
