javax.json.stream

Interface JsonGenerator

    • Field Detail

      • PRETTY_PRINTING

        static final String PRETTY_PRINTING
        Configuration property to generate JSON prettily. All providers must support this property. The value of the property could be be anything.
        See Also:
        Constant Field Values
    • Method Detail

      • writeStartObject

        JsonGenerator writeStartObject()
        Writes the JSON start object character. It starts a new child object context within which JSON name/value pairs can be written to the object. This method is valid only in an array context or in no context (when a context is not yet started). This method can only be called once in no context.
        Returns:
        this generator
        Throws:
        JsonException - if an i/o error occurs (IOException would be cause of JsonException)
        JsonGenerationException - if this method is called within an object context or if it is called more than once in no context.
      • writeStartObject

        JsonGenerator writeStartObject(String name)
        Writes the JSON name/start object character pair in the current object context. It starts a new child object context within which JSON name/value pairs can be written to the object.
        Parameters:
        name - a name within the JSON name/object pair to be written
        Returns:
        this generator
        Throws:
        JsonException - if an i/o error occurs (IOException would be cause of JsonException)
        JsonGenerationException - if this method is not called within an object context
      • writeStartArray

        JsonGenerator writeStartArray()
        Writes the JSON start array character. It starts a new child array context within which JSON values can be written to the array. This method is valid only in an array context or in no context (when a context is not yet started). This method can only be called once in no context.
        Returns:
        this generator
        Throws:
        JsonException - if an i/o error occurs (IOException would be cause of JsonException)
        JsonGenerationException - if this method is called within an object context or if called more than once in no context
      • writeStartArray

        JsonGenerator writeStartArray(String name)
        Writes the JSON name/start array character pair with in the current object context. It starts a new child array context within which JSON values can be written to the array.
        Parameters:
        name - a name within the JSON name/array pair to be written
        Returns:
        this generator
        Throws:
        JsonException - if an i/o error occurs (IOException would be cause of JsonException)
        JsonGenerationException - if this method is not called within an object context
      • write

        JsonGenerator write(String name,
                            JsonValue value)
        Writes a JSON name/value pair in the current object context.
        Parameters:
        name - a name in the JSON name/value pair to be written in current JSON object
        value - a value in the JSON name/value pair to be written in current JSON object
        Returns:
        this generator
        Throws:
        JsonException - if an i/o error occurs (IOException would be cause of JsonException)
        JsonGenerationException - if this method is not called within an object context
      • write

        JsonGenerator write(String name,
                            String value)
        Writes a JSON name/string value pair in the current object context. The specified value is written as JSON string value.
        Parameters:
        name - a name in the JSON name/string pair to be written in current JSON object
        value - a value in the JSON name/string pair to be written in current JSON object
        Returns:
        this generator
        Throws:
        JsonException - if an i/o error occurs (IOException would be cause of JsonException)
        JsonGenerationException - if this method is not called within an object context
      • write

        JsonGenerator write(String name,
                            BigInteger value)
        Writes a JSON name/number value pair in the current object context. The specified value is written as a JSON number value. The string new BigDecimal(value).toString() is used as the text value for writing.
        Parameters:
        name - a name in the JSON name/number pair to be written in current JSON object
        value - a value in the JSON name/number pair to be written in current JSON object
        Returns:
        this generator
        Throws:
        JsonException - if an i/o error occurs (IOException would be cause of JsonException)
        JsonGenerationException - if this method is not called within an object context.
      • write

        JsonGenerator write(String name,
                            BigDecimal value)
        Writes a JSON name/number value pair in the current object context. The specified value is written as a JSON number value. The specified value's toString() is used as the text value for writing.
        Parameters:
        name - a name in the JSON name/number pair to be written in current JSON object
        value - a value in the JSON name/number pair to be written in current JSON object
        Returns:
        this generator
        Throws:
        JsonException - if an i/o error occurs (IOException would be cause of JsonException)
        JsonGenerationException - if this method is not called within an object context.
      • write

        JsonGenerator write(String name,
                            int value)
        Writes a JSON name/number value pair in the current object context. The specified value is written as a JSON number value. The string new BigDecimal(value).toString() is used as the text value for writing.
        Parameters:
        name - a name in the JSON name/number pair to be written in current JSON object
        value - a value in the JSON name/number pair to be written in current JSON object
        Returns:
        this generator
        Throws:
        JsonException - if an i/o error occurs (IOException would be cause of JsonException)
        JsonGenerationException - if this method is not called within an object context.
      • write

        JsonGenerator write(String name,
                            long value)
        Writes a JSON name/number value pair in the current object context. The specified value is written as a JSON number value. The string new BigDecimal(value).toString() is used as the text value for writing.
        Parameters:
        name - a name in the JSON name/number pair to be written in current JSON object
        value - a value in the JSON name/number pair to be written in current JSON object
        Returns:
        this generator
        Throws:
        JsonException - if an i/o error occurs (IOException would be cause of JsonException)
        JsonGenerationException - if this method is not called within an object context.
      • write

        JsonGenerator write(String name,
                            double value)
        Writes a JSON name/number value pair in the current object context. The specified value is written as a JSON number value. The string BigDecimal.valueOf(double).toString() is used as the text value for writing.
        Parameters:
        name - a name in the JSON name/number pair to be written in current JSON object
        value - a value in the JSON name/number pair to be written in current JSON object
        Returns:
        this generator
        Throws:
        JsonException - if an i/o error occurs (IOException would be cause of JsonException)
        NumberFormatException - if the value is Not-a-Number(NaN) or infinity.
        JsonGenerationException - if this method is not called within an object context
      • write

        JsonGenerator write(String name,
                            boolean value)
        Writes a JSON name/boolean value pair in the current object context. If value is true, it writes the JSON true value, otherwise it writes the JSON false value.
        Parameters:
        name - a name in the JSON name/boolean pair to be written in current JSON object
        value - a value in the JSON name/boolean pair to be written in current JSON object
        Returns:
        this generator
        Throws:
        JsonException - if an i/o error occurs (IOException would be cause of JsonException)
        JsonGenerationException - if this method is not called within an object context.
      • writeNull

        JsonGenerator writeNull(String name)
        Writes a JSON name/null value pair in an current object context.
        Parameters:
        name - a name in the JSON name/null pair to be written in current JSON object
        Returns:
        this generator
        Throws:
        JsonException - if an i/o error occurs (IOException would be cause of JsonException)
        JsonGenerationException - if this method is not called within an object context
      • writeEnd

        JsonGenerator writeEnd()
        Writes the end of the current context. If the current context is an array context, this method writes the end-of-array character (']'). If the current context is an object context, this method writes the end-of-object character ('}'). After writing the end of the current context, the parent context becomes the new current context.
        Returns:
        this generator
        Throws:
        JsonException - if an i/o error occurs (IOException would be cause of JsonException)
        JsonGenerationException - if this method is called in no context.
      • write

        JsonGenerator write(JsonValue value)
        Writes the specified value as a JSON value within the current array context.
        Parameters:
        value - a value to be written in current JSON array
        Returns:
        this generator
        Throws:
        JsonException - if an i/o error occurs (IOException would be cause of JsonException)
        JsonGenerationException - if this method is not called within an array context.
      • write

        JsonGenerator write(String value)
        Writes the specified value as a JSON string value within the current array context.
        Parameters:
        value - a value to be written in current JSON array
        Returns:
        this generator
        Throws:
        JsonException - if an i/o error occurs (IOException would be cause of JsonException)
        JsonGenerationException - if this method is not called within an array context
      • write

        JsonGenerator write(BigDecimal value)
        Writes the specified value as a JSON number value within the current array context. The specified value's toString() is used as the the text value for writing.
        Parameters:
        value - a value to be written in current JSON array
        Returns:
        this generator
        Throws:
        JsonException - if an i/o error occurs (IOException would be cause of JsonException)
        JsonGenerationException - if this method is not called within an array context
        See Also:
        JsonNumber
      • write

        JsonGenerator write(BigInteger value)
        Writes the specified value as a JSON number value within the current array context. The string new BigDecimal(value).toString() is used as the text value for writing.
        Parameters:
        value - a value to be written in current JSON array
        Returns:
        this generator.
        Throws:
        JsonException - if an i/o error occurs (IOException would be cause of JsonException)
        JsonGenerationException - if this method is not called within an array context
        See Also:
        JsonNumber
      • write

        JsonGenerator write(int value)
        Writes the specified value as a JSON number value within the current array context. The string new BigDecimal(value).toString() is used as the text value for writing.
        Parameters:
        value - a value to be written in current JSON array
        Returns:
        this generator
        Throws:
        JsonException - if an i/o error occurs (IOException would be cause of JsonException)
        JsonGenerationException - if this method is not called within an array context
      • write

        JsonGenerator write(long value)
        Writes the specified value as a JSON number value within the current array context. The string new BigDecimal(value).toString() is used as the text value for writing.
        Parameters:
        value - a value to be written in current JSON array
        Returns:
        this generator
        Throws:
        JsonException - if an i/o error occurs (IOException would be cause of JsonException)
        JsonGenerationException - if this method is not called within an array context
      • write

        JsonGenerator write(double value)
        Writes the specified value as a JSON number value within the current array context. The string BigDecimal.valueOf(value).toString() is used as the text value for writing.
        Parameters:
        value - a value to be written in current JSON array
        Returns:
        this generator
        Throws:
        JsonException - if an i/o error occurs (IOException would be cause of JsonException)
        JsonGenerationException - if this method is not called within an array context
        NumberFormatException - if the value is Not-a-Number(NaN) or infinity.
      • write

        JsonGenerator write(boolean value)
        Writes a JSON true or false value within the current array context. If value is true, this method writes the JSON true value, otherwise it writes the JSON false value.
        Parameters:
        value - a boolean value
        Returns:
        this generator
        Throws:
        JsonException - if an i/o error occurs (IOException would be cause of JsonException)
        JsonGenerationException - if this method is not called within an array context.
      • writeNull

        JsonGenerator writeNull()
        Writes a JSON null value within the current array context.
        Returns:
        this generator
        Throws:
        JsonException - if an i/o error occurs (IOException would be cause of JsonException)
        JsonGenerationException - if this method is not called within an array context
      • close

        void close()
        Closes this generator and frees any resources associated with it. 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)
        JsonGenerationException - if an incomplete JSON is generated
      • flush

        void flush()
        Flushes the underlying output source. If the generator has saved any characters in a buffer, writes them immediately to the underlying output source before flushing it.
        Specified by:
        flush in interface Flushable
        Throws:
        JsonException - if an i/o error occurs (IOException would be cause of JsonException)

Document created the 11/06/2005, last modified the 18/08/2025
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