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API module of JSR 374:Java API for Processing JSON
There is a newer version: 1.1.4
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package javax.json;

import java.io.Closeable;

/**
 * Writes a JSON {@link JsonObject object} or
 * {@link JsonArray array} structure to an output source.
 *
 * 
 * 
 * The following example demonstrates how write an empty JSON object:
 * 
 * 
 * JsonWriter jsonWriter = Json.createWriter(...);
 * jsonWriter.writeObject(Json.createObjectBuilder().build());
 * jsonWriter.close();
 * 
 * 

 *
 * @author Jitendra Kotamraju
 */
public interface JsonWriter extends  /*Auto*/Closeable {

    /**
     * Writes the specified JSON {@link JsonArray array} to the output
     * source. This method needs to be called only once for a writer instance.
     *
     * @param 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)
     * @throws IllegalStateException if writeArray, writeObject, write or close
     *     method is already called
     */
    void writeArray(JsonArray array);

    /**
     * Writes the specified JSON {@link JsonObject object} to the output
     * source. This method needs to be called only once for a writer instance.
     *
     * @param 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)
     * @throws IllegalStateException if writeArray, writeObject, write or close
     *     method is already called
     */
    void writeObject(JsonObject object);

    /**
     * Writes the specified JSON {@link JsonObject object} or
     * {@link JsonArray array} to the output source. This method needs
     * to be called only once for a writer instance.
     *
     * @param 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)
     * @throws IllegalStateException if writeArray, writeObject, write
     *     or close method is already called
     */
    void write(JsonStructure value);

    /**
     * Closes this JSON writer and frees any resources associated with the
     * writer. This method closes the underlying output source.
     *
     * @throws JsonException if an i/o error occurs (IOException would be
     * cause of JsonException)
     */
    @Override
    void close();

}
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