?package?bjsxt.com.map;?class?MapDemo01?{ public??static??void??main(String[]???args) { String[]???arr="this??is??a??cat?and??that??is??a??mice??and??where??is???the??food??".split("regex"); ?? Map<String,Integer>??map=new??HashMap<String,Integer>(); for(String??key:arr) { if(!map.containskey(key)) { map.put(key,new??Letter(key)); } Letter??value=map.get(key); value.setCount(value.getCount()+1); } for(String??key:map.keySet()) { Letter??value=map.get(key); System.out.println(key+"-->"+value.getCount()); } } }