how to read file in java jacakson
try {
// create object mapper instance
ObjectMapper mapper = new ObjectMapper();
// convert JSON file to map
Map<?, ?> map = mapper.readValue(Paths.get("book.json").toFile(), Map.class);
// print map entries
for (Map.Entry<?, ?> entry : map.entrySet()) {
System.out.println(entry.getKey() + "=" + entry.getValue());
}
} catch (Exception ex) {
ex.printStackTrace();
}