jfreechart

package test;

import java.io.FileOutputStream;
import java.io.IOException;

import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartUtilities;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.data.CategoryDataset;
import org.jfree.data.DefaultCategoryDataset;

public class ChartTest {


	private static CategoryDataset getDataSet2() {
		DefaultCategoryDataset dataset = new DefaultCategoryDataset();
		dataset.addValue(100, "北京", "苹果");
		dataset.addValue(150, "上海", "苹果");
		dataset.addValue(300, "广州", "苹果");
		dataset.addValue(240, "北京", "梨子");
		dataset.addValue(560, "上海", "梨子");
		dataset.addValue(200, "广州", "梨子");
		dataset.addValue(300, "北京", "葡萄");
		dataset.addValue(980, "上海", "葡萄");
		dataset.addValue(900, "广州", "葡萄");
		dataset.addValue(400, "北京", "香蕉");
		dataset.addValue(1560, "上海", "香蕉");
		dataset.addValue(6000, "广州", "香蕉");
		dataset.addValue(1000, "北京", "荔枝");
		dataset.addValue(8890, "上海", "荔枝");
		dataset.addValue(5770, "广州", "荔枝");
		return dataset;
	}

	public static void main(String[] args) throws IOException {
		CategoryDataset dataset = getDataSet2();
		JFreeChart chart = ChartFactory.createBarChart3D("水果产量图", "水果", "产量",
				dataset, PlotOrientation.VERTICAL, true, false, false);
		FileOutputStream fos_jpg = null;
		try {
			fos_jpg = new FileOutputStream("D:\\fruit.jpg");
			ChartUtilities.writeChartAsJPEG(fos_jpg, 1.0f, chart, 400, 300, null);
		} finally {
			try {
				fos_jpg.close();
			} catch (Exception e) {
			}
		}
	}
}