Answers for "convert in json"

change js to json

var obj = {name: "Martin", age: 30, country: "United States"};
 
// Converting JS object to JSON string
var json = JSON.stringify(obj);
 
console.log(json);
// Prints: {"name":"Martin","age":30,"country":"United States"} 
"https://www.tutorialrepublic.com/faq/how-to-convert-js-object-to-json-string.php"

Javascript object to JSON string

var person={"first_name":"Tony","last_name":"Hawk","age":31};
var personJSONString=JSON.stringify(person);

json to string

const myJSON = JSON.stringify(obj);

js string to json

var obj = JSON.parse("{no:'u',my:'sql'}");//returnes {no:'u',my:'sql'}

convert json to object

Jackson Data-bind depdendency that take care of 
Converting between 
JSON to Java Object 
and 
Java Object to JSON

<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-databind</artifactId>
    <version>2.12.0</version>
</dependency>