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A Java wrapper dor the Highcharts javascript library to include interactive charts in your Java web application.

There is a newer version: 2.0.1

/**
 *   Copyright 2012-2013 Wicked Charts (http://wicked-charts.googlecode.com)
 *
 *   Licensed under the Apache License, Version 2.0 (the "License");
 *   you may not use this file except in compliance with the License.
 *   You may obtain a copy of the License at
 *        http://www.apache.org/licenses/LICENSE-2.0
 *
 *   Unless required by applicable law or agreed to in writing, software
 *   distributed under the License is distributed on an "AS IS" BASIS,
 *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *   See the License for the specific language governing permissions and
 *   limitations under the License.
 */
package com.googlecode.wickedcharts.highcharts.jackson;

import java.io.IOException;

import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.SerializerProvider;
import com.googlecode.wickedcharts.highcharts.json.Nullable;

public abstract class NullableSerializer extends JsonSerializer {

	@SuppressWarnings("unchecked")
	@Override
	public void serialize(final Nullable value, final JsonGenerator jgen, final SerializerProvider provider)
	    throws IOException, JsonProcessingException {
		if (value.isNull()) {
			jgen.writeNull();
		} else {
			serializeIfNotNull((T) value, jgen, provider);
		}
	}

	protected abstract void serializeIfNotNull(T value, JsonGenerator jgen, SerializerProvider provider)
	    throws IOException, JsonProcessingException;

}