Cara Membuat Grafik Bar Chart Menggunakan Java Netbeans

• Langkah pertama yaitu new project-pilih java application seperti gambar dibawah ini

• Selanjutnya buat nama project “bebas” sebagai contoh dibawah ini :

•          Selanjutnya import file library seperti digambar berikut file library bisa didownload disini

•         Selanjutnya buat import seperti ini

import java.awt.BorderLayout;

import java.awt.Color;

import javax.swing.JFrame;

import java.awt.Dimension;

import javax.swing.JPanel;

import javax.swing.SwingUtilities;

import javax.swing.UIManager;

import org.jfree.chart.ChartFactory;

import org.jfree.chart.ChartPanel;

import org.jfree.chart.JFreeChart;

import org.jfree.chart.axis.CategoryAxis;

import org.jfree.chart.axis.CategoryLabelPositions;

import org.jfree.chart.plot.CategoryPlot;

import org.jfree.chart.plot.PlotOrientation;

import org.jfree.chart.renderer.category.BarRenderer;

import org.jfree.chart.renderer.category.CategoryItemRenderer;

import org.jfree.data.category.DefaultCategoryDataset;

import javax.swing.JFrame;

import javax.swing.SwingUtilities;

import javax.swing.UIManager;

import org.jfree.chart.ChartFactory;

import org.jfree.chart.ChartPanel;

import org.jfree.chart.JFreeChart;

import org.jfree.chart.plot.PiePlot3D;

import org.jfree.data.general.DefaultPieDataset;

import org.jfree.data.general.PieDataset;

import org.jfree.util.Rotation;

•         Selanjutnya Copy script berikut ini :

public class Uas_Komgraf extends JFrame{

 private JFreeChart barchart;

 private ChartPanel panel;

 public Uas_Komgraf(){

 panel = createChart(createData());

 setLayout(new BorderLayout());

 add(panel,BorderLayout.CENTER);

 this.setSize(600, 400);

        this.setTitle("Diagram Bar");

        this.setLocationRelativeTo(null);

        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

 }

 private DefaultCategoryDataset createData(){

 DefaultCategoryDataset data = new DefaultCategoryDataset();

 data.addValue(300, "Jakarta", "Hotel Ascott");

 data.addValue(500, "Jakarta","Hotel Olive");

 data.addValue(150,"Jakarta", "Hotel Fraser");

 data.addValue(600, "Bandung", "Hotel Ascott");

 data.addValue(300, "bandung","Hotel Olive");

 data.addValue(750,"Bandung", "Hotel Fraser");

 data.addValue(800, "Bali", "Hotel Ascott");

 data.addValue(300, "Bali","Hotel Olive");

 data.addValue(950,"Bali", "Hotel Fraser");

 //

 return data;

 }

•          Lanjut Copy Script dibawah ini :

private ChartPanel createChart(DefaultCategoryDataset data) {

 barchart = ChartFactory.createBarChart3D("Data Pengguna Sistem Operasi di Beberapa Daerah", "Operating System", "Jumlah Pengguna", data, PlotOrientation.VERTICAL, true, true, false);

 barchart.setBackgroundPaint(new Color(135,206,250));

 CategoryPlot plot = (CategoryPlot) barchart.getPlot();

 plot.setNoDataMessage("Data Tidak ada");

 CategoryAxis axis = plot.getDomainAxis();

 axis.setCategoryLabelPositions(CategoryLabelPositions.STANDARD);

 CategoryItemRenderer renderer = plot.getRenderer();

 renderer.setBaseItemLabelsVisible(true);

 BarRenderer barRenderer = (BarRenderer) renderer;

 barRenderer.setItemMargin(0.1D);

 barRenderer.setDrawBarOutline(true);

 return new ChartPanel(barchart);

 }

 public static void main(String[] args) {

try {

UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());

} catch (Exception e) {

}

SwingUtilities.invokeLater(new Runnable() {

@Override

public void run() {

new Uas_Komgraf().setVisible(true);

}

        });

 }}

•          Berikut hasil dari program grafik Bar Sederhana