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Importance of a JSONTokener in Java?
The JSONTokener class allows an application to break a string into tokens. It can be used by the JSONObject and JSONArray constructors to parse JSON source strings. A few important methods of JSONTokener class are back() - moves cursor one position back, more() - returns true if the token has element or else returns false, next() - returns a character next to current position and nextTo(character) - returns a string until the given character matches.
Syntax
public class JSONTokener extends java.lang.Object
Example
import java.io.*;
import org.json.*;
public class JSONTokenerTest {
public static void main(String args[]) throws JSONException, Exception {
String jsonStr = "{" + " \"Technology\": \"Java\", "+ " \"location\": [ Madhapur, Hyderabad ] " + "}";
JSONTokener jsonToken = new JSONTokener(jsonStr);
jsonToken.next();
jsonToken.next();
jsonToken.next();
jsonToken.next();
char c = jsonToken.next();
jsonToken.back();
boolean b = jsonToken.more();
String s = jsonToken.nextTo('i');
System.out.println("next character: " + c);
System.out.println("has more tokens: " + b);
System.out.println("next to i: " + s);
}
}Output
next character: T has more tokens: true next to i: Technology": "Java", "locat
Updated on: 13-Feb-2020
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