org.json package

• JSON is a light-weight,language independent,data interchange format.
• org.json package implement JSON encoders/decoders in Java.It also includes the cpability to convert between JSON and XML,HTTP headers,Cookies and CDL.
• This is a reference implementation.
• The package compiles on Java 1.6-1.8
• JSONObject.java:The JSONObject can parse text from a String or a JSONTokener to produce a map-like object.The object provides methods for manipulating its contents,and for producing a JSON compliant object serialization.

  • public JSONObject();
    public JSONObject(JSONObject jo, String[] names);
    public JSONObject(JSONTokener x) throws JSONException ;
    public JSONObject(Map<?, ?> m);
    public JSONObject(Object bean);
    public JSONObject(Object object, String names[]);
    public JSONObject(String source) throws JSONException;
    public JSONObject(String baseName, Locale locale) throws JSONException;

• JSONArray.java:The JSONArray can parse text from a String or a JSONTokener to produce a vector-like object.The object provides methods for manipulating its contents,and for producing a JSON compliant array serialization.

  • public JSONArray() {
        this.myArrayList = new ArrayList<Object>();
    }
    public JSONArray(JSONTokener x) throws JSONException;
    public JSONArray(String source) throws JSONException;
    public JSONArray(Collection<?> collection);
    public JSONArray(Object array) throws JSONException;

• JSONTokener.java:The JSONTokener breaks a text into a sequence of individual tokens.It can be constructed from String,Reader,or InputStream.

  • public JSONTokener(Reader reader);
    public JSONTokener(InputStream inputStream);
    public JSONTokener(String s);

• JSONException.java: The JSONException is the standard exception type thrown by this package.

  • public class JSONException extends RuntimeException{
        public JSONException(final String message) {
            super(message);
        }
        public JSONException(final String message, final Throwable cause) {
            super(message, cause);
        }
         public JSONException(final Throwable cause) {
            super(cause.getMessage(), cause);
         }
    }

• Cookie.java: Cookie provides support for converting between JSON and cookies.

  • public static JSONObject toJSONObject(String string) throws JSONException {
    String         name;
    JSONObject     jo = new JSONObject();
    Object         value;
    JSONTokener x = new JSONTokener(string);
    jo.put("name", x.nextTo('='));
    x.next('=');
    jo.put("value", x.nextTo(';'));
    x.next();
    while (x.more()) {
        name = unescape(x.nextTo("=;"));
        if (x.next() != '=') {
            if (name.equals("secure")) {
                value = Boolean.TRUE;
            } else {
                throw x.syntaxError("Missing '=' in cookie parameter.");
            }
        } else {
            value = unescape(x.nextTo(';'));
            x.next();
        }
        jo.put(name, value);
    }
    return jo;
    }

• CookieList.java: CookieList provides support for converting between JSON and cookie lists.

  • public static JSONObject toJSONObject(String string) throws JSONException {
    JSONObject jo = new JSONObject();
    JSONTokener x = new JSONTokener(string);
    while (x.more()) {
        String name = Cookie.unescape(x.nextTo('='));
        x.next('=');
        jo.put(name, Cookie.unescape(x.nextTo(';')));
        x.next();
    }
    return jo;
    }

• HTTP.java: HTTP provides support for converting between JSON and HTTP headers.

  • ```java
    public static JSONObject toJSONObject(String string) throws JSONException {
    JSONObject jo = new JSONObject();
    HTTPTokener x = new HTTPTokener(string);
    String token;

    token = x.nextToken();
    if (token.toUpperCase(Locale.ROOT).startsWith("HTTP")) {

    // Response

            jo.put("HTTP-Version", token);
            jo.put("Status-Code", x.nextToken());
            jo.put("Reason-Phrase", x.nextTo('\0'));
            x.next();
    
        } else {

    // Request

            jo.put("Method", token);
            jo.put("Request-URI", x.nextToken());
            jo.put("HTTP-Version", x.nextToken());
        }

    // Fields

        while (x.more()) {
            String name = x.nextTo(':');
            x.next(':');
            jo.put(name, x.nextTo('\0'));
            x.next();
        }
        return jo;

    }
• XML.java: XML provides support for converting between JSON and XML.