int t1 = l.token();
int t2 = l.token();
assertTrue( t1 > 255 );
assertTrue( t2 > 255 );
assertEquals( ')', l.token() );
assertEquals( -1, l.token() );
assertEquals(2, symtab.size() );
assertEquals("hello", symtab.get(t1));
assertEquals("there", symtab.get(t2));