javax.json

Interface JsonWriter

All Superinterfaces:

AutoCloseable, Closeable

public interface JsonWriter
extends Closeable

Writes a JSON object or array structure to an output source.

The class Json contains methods to create writers from output sources (OutputStream and Writer).

The following example demonstrates how write an empty JSON object:

 
 JsonWriter jsonWriter = Json.createWriter(...);
 jsonWriter.writeObject(Json.createObjectBuilder().build());
 jsonWriter.close();
 
 

The class JsonWriterFactory also contains methods to create JsonWriter instances. A factory instance can be used to create multiple writer instances with the same configuration. This the preferred way to create multiple instances. A sample usage is shown in the following example:

 
 JsonWriterFactory factory = Json.createWriterFactory(config);
 JsonWriter writer1 = factory.createWriter(...);
 JsonWriter writer2 = factory.createWriter(...);
 
 

Method Summary

Modifier and Type	Method and Description
void	close() Closes this JSON writer and frees any resources associated with the writer.
void	write(JsonStructure value) Writes the specified JSON object or array to the output source.
void	writeArray(JsonArray array) Writes the specified JSON array to the output source.
void	writeObject(JsonObject object) Writes the specified JSON object to the output source.

Method Detail

writeArray

void writeArray(JsonArray array)

Writes the specified JSON array to the output source. This method needs to be called only once for a writer instance.

Parameters:

array - JSON array that is to be written to the output source

Throws:

JsonException - if the specified JSON object cannot be written due to i/o error (IOException would be cause of JsonException)

IllegalStateException - if writeArray, writeObject, write or close method is already called

writeObject

void writeObject(JsonObject object)

Writes the specified JSON object to the output source. This method needs to be called only once for a writer instance.

Parameters:

object - JSON object that is to be written to the output source

Throws:

JsonException - if the specified JSON object cannot be written due to i/o error (IOException would be cause of JsonException)

IllegalStateException - if writeArray, writeObject, write or close method is already called

write

void write(JsonStructure value)

Writes the specified JSON object or array to the output source. This method needs to be called only once for a writer instance.

Parameters:

value - JSON array or object that is to be written to the output source

Throws:

JsonException - if the specified JSON object cannot be written due to i/o error (IOException would be cause of JsonException)

IllegalStateException - if writeArray, writeObject, write or close method is already called

close

void close()

Closes this JSON writer and frees any resources associated with the writer. This method closes the underlying output source.

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Throws:

JsonException - if an i/o error occurs (IOException would be cause of JsonException)