HashMap操作

// HashMap新建HashMap<String, Object> map = new HashMap<String, Object>();// HashMap赋值map.put("id", 12);map.put("name", "张十三");// HashMap遍历Iterator iter = map.entrySet().iterator();while (iter.hasNext()) {Map.Entry entry = (Map.Entry) iter.next();Object key = entry.getKey();Object val = entry.getValue();}// HashMap取值map.get("id").toString();