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Java智能图表类库JChartLib使用介绍

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http://www.codeceo.com/article/java-jchartlib.html

JChartLib是一款基于Java的智能图表类库，JChartLib不仅有着漂亮的外观，而且支持图表坐标数值的自动调整，这样我们在图表中显示数值就比较简单，不用我们计算处理。JChartLib同样支持线型图、柱状图和饼状图，而且可以自定义外观样式。另外图表可直接在 Swing 中使用，可保持为 jpg 和 png 格式图片。

JChartLib的预览图

JChartLib的使用方法

JChartLib线形图绘制的Java代码如下： 

/*

* JChartLib Demo App for a Linechart

* @author Silvio Schneider

/

import com.bitagentur.chart.JChartLibLinechart;

import com.bitagentur.data.JChartLibDataSet;

import com.bitagentur.data.JChartLibSerie;

import com.bitagentur.renderer.JChartLibPanel;

import java.awt.event.WindowEvent;

import java.awt.event.WindowListener;

import javax.swing.JFrame;

/*

* A simple demonstration application showing how to create a line chart

/

public class JChartLibApp extends JFrame implements WindowListener {

/**

 * Creates a new Application Frame

 */

public JChartLibApp() {

    super("JChartLib Demo Appllication");

    final JChartLibDataSet dataset = createDataset();

    final JChartLibBaseChart chart = createChart(dataset);

    final JChartLibPanel chartPanel = new JChartLibPanel(chart);

    chartPanel.setPreferredSize(new java.awt.Dimension(500, 270));

    setContentPane(chartPanel);

}

/**

 * Creates a sample dataset.

 *

 * @return a sample dataset.

 */

private JChartLibDataSet createDataset() {

    //Dataseries can be added with int arrays

    int[] values1 = new int[5];

    values1[0] = 1;

    values1[1] = 3;

    values1[2] = 4;

    values1[3] = 7;

    values1[4] = 2;

    //or by generating a Dataserie object

    JChartLibSerie values2 = new JChartLibSerie("Banana");

    values2.addValue(5);

    values2.addValue(4);

    values2.addValue(2);

    values2.addValue(6);

    values2.addValue(2);

    final JChartLibDataSet dataset = new JChartLibDataSet();

    dataset.addDataSerie("Apple", values1);   //adds the apples

    dataset.addDataSerie(values2);            //adds the bananas

    return dataset;

}

/**

 * Creates a chart

 *

 * @param dataset the data for the chart.

 * @return a new chart

 */

private JChartLibBaseChart createChart(final JChartLibDataSet dataset) {

    // create the chart with title and axis names

    final JChartLibLinechart chart = new JChartLibLinechart(

            "Fruits are good", // chart title

            "Time goes by", // x axis text

            "Number of Fruits", // y axis text

            dataset, // data

            true // legend on

            );

    return chart;

}

/**

 * Main method - DEMO Application for JChartLib

 *

 * @param args the command line arguments

 */

public static void main(final String[] args) {

    System.out.println("JChartLibApp started");

    final JChartLibApp app = new JChartLibApp();

    app.addWindowListener(app);

    app.pack();

    app.setVisible(true);

}

@Override

public void windowOpened(WindowEvent e) {

    //Nothing to do

}

@Override

public void windowClosing(WindowEvent e) {

    //Exit and goodby

    if (e.getWindow() == this) {

        dispose();

        System.out.println("Thanks for using the JChartLibApp");

        System.exit(0);

    }

}

@Override

public void windowClosed(WindowEvent e) {

    //Nothing to do

}

@Override

public void windowIconified(WindowEvent e) {

    //Nothing to do

}

@Override

public void windowDeiconified(WindowEvent e) {

    //Nothing to do

}

@Override

public void windowActivated(WindowEvent e) {

    //Nothing to do

}

@Override

public void windowDeactivated(WindowEvent e) {

    //Nothing to do

}

}

JChartLib柱形图绘制的Java代码如下： 

/*

* JChartLib Demo App for a Barchart

* @author Silvio Schneider

/

import com.bitagentur.chart.JChartLibBarchart;

import com.bitagentur.data.JChartLibDataSet;

import com.bitagentur.data.JChartLibSerie;

import com.bitagentur.renderer.JChartLibPanel;

import java.awt.event.WindowEvent;

import java.awt.event.WindowListener;

import javax.swing.JFrame;

/*

* A simple demonstration application showing how to create a bar chart

/

public class JChartLibApp extends JFrame implements WindowListener {

/**

 * Creates a new Application Frame

 */

public JChartLibApp() {

    super("JChartLib Demo Appllication");

    final JChartLibDataSet dataset = createDataset();

    final JChartLibBarchart chart = createChart(dataset);

    final JChartLibPanel chartPanel = new JChartLibPanel(chart);

    chartPanel.setPreferredSize(new java.awt.Dimension(500, 270));

    setContentPane(chartPanel);

}

/**

 * Creates a sample dataset.

 *

 * @return a sample dataset.

 */

private JChartLibDataSet createDataset() {

    //Dataseries can be added with int arrays

    int[] values1 = new int[5];

    values1[0] = 1;

    values1[1] = 3;

    values1[2] = 4;

    values1[3] = 7;

    values1[4] = 2;

    //or by generating a Dataserie object

    JChartLibSerie values2 = new JChartLibSerie("Banana");

    values2.addValue(5);

    values2.addValue(4);

    values2.addValue(2);

    values2.addValue(6);

    values2.addValue(2);

    final JChartLibDataSet dataset = new JChartLibDataSet();

    dataset.addDataSerie("Apple", values1);   //adds the Apples

    dataset.addDataSerie(values2);            //adds the Bananas

    return dataset;

}

/**

 * Creates a chart

 *

 * @param dataset the data for the chart.

 * @return a new chart

 */

private JChartLibBaseChart createChart(final JChartLibDataSet dataset) {

    // create the chart with title and axis names

    final JChartLibBarchart chart = new JChartLibBarchart(

            "Fruits are good", // chart title

            "Time goes by", // x axis text

            "Number of Fruits", // y axis text

            dataset, // data

            true // legend on

            );

    return chart;

}

/**

 * Main method - DEMO Application for JChartLib

 *

 * @param args the command line arguments

 */

public static void main(final String[] args) {

    System.out.println("JChartLibApp started");

    final JChartLibApp app = new JChartLibApp();

    app.addWindowListener(app);

    app.pack();

    app.setVisible(true);

}

@Override

public void windowOpened(WindowEvent e) {

    //Nothing to do

}

@Override

public void windowClosing(WindowEvent e) {

    //Exit and goodby

    if (e.getWindow() == this) {

        dispose();

        System.out.println("Thanks for using the JChartLibApp");

        System.exit(0);

    }

}

@Override

public void windowClosed(WindowEvent e) {

    //Nothing to do

}

@Override

public void windowIconified(WindowEvent e) {

    //Nothing to do

}

@Override

public void windowDeiconified(WindowEvent e) {

    //Nothing to do

}

@Override

public void windowActivated(WindowEvent e) {

    //Nothing to do

}

@Override

public void windowDeactivated(WindowEvent e) {

    //Nothing to do

}

}

JChartLib饼状图绘制的Java代码如下： 

/*

* JChartLib Demo App for a piechart

* @author Silvio Schneider

/

import com.bitagentur.chart.JChartLibPiechart;

import com.bitagentur.data.JChartLibDataSet;

import com.bitagentur.data.JChartLibSerie;

import com.bitagentur.renderer.JChartLibPanel;

import java.awt.event.WindowEvent;

import java.awt.event.WindowListener;

import java.util.Random;

import javax.swing.JFrame;

/

* A simple demonstration application showing how to create a pie chart.

/

public class JChartLibApp_piechart extends JFrame implements WindowListener {

/**

 * Creates a new Application Frame

 */

public JChartLibApp_piechart() {

    super("JChartLib Demo Appllication");

    final JChartLibDataSet dataset = createDataset();

    final JChartLibPiechart chart = createChart(dataset);

    final JChartLibPanel chartPanel = new JChartLibPanel(chart);

    chartPanel.setPreferredSize(new java.awt.Dimension(500, 270));

    setContentPane(chartPanel);

}

/**

 * Creates a sample dataset.

 *

 * @return a sample dataset.

 */

private JChartLibDataSet createDataset() {

    //or by generating a Dataserie object

    JChartLibSerie values1 = new JChartLibSerie("Fruits");

    values1.addValue("Apple", 1);

    values1.addValue("Banana", 1);

    values1.addValue("Orange", 1);

    values1.addValue("Tomato", 1);

    final JChartLibDataSet dataset = new JChartLibDataSet();

    dataset.addDataSerie(values1);          //adds the Apples

    return dataset;

}

/**

 * Creates a chart

 *

 * @param dataset the data for the chart.

 * @return a new chart

 */

private JChartLibPiechart createChart(final JChartLibDataSet dataset) {

    // create the chart with title and axis names

    final JChartLibPiechart chart = new JChartLibPiechart(

            "yammi fruitpie", // chart title

            "", // x axis text

            "", // y axis text

            dataset // data

            );

    return chart;

}

/**

 * Main method - DEMO Application for JChartLib

 *

 * @param args the command line arguments

 */

public static void main(final String[] args) {

    System.out.println("JChartLibApp started");

    final JChartLibApp_piechart app = new JChartLibApp_piechart();

    app.addWindowListener(app);

    app.pack();

    app.setVisible(true);

}

@Override

public void windowOpened(WindowEvent e) {

    //Nothing to do

}

@Override

public void windowClosing(WindowEvent e) {

    //Exit and goodby

    if (e.getWindow() == this) {

        dispose();

        System.out.println("Thanks for using the JChartLibApp");

        System.exit(0);

    }

}

@Override

public void windowClosed(WindowEvent e) {

    //Nothing to do

}

@Override

public void windowIconified(WindowEvent e) {

    //Nothing to do

}

@Override

public void windowDeiconified(WindowEvent e) {

    //Nothing to do

}

@Override

public void windowActivated(WindowEvent e) {

    //Nothing to do

}

@Override

public void windowDeactivated(WindowEvent e) {

    //Nothing to do

}

}

JChartLib的功能介绍就到这里，如有疑问，可以访问文末的官方网站，或者留言讨论。

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