Cara Menggunakan JSCrollPane Java Netbeans

/*

Java Swing, 2nd Edition

By Marc Loy, Robert Eckstein, Dave Wood, James Elliott, Brian Cole

ISBN: 0-596-00408-7

Publisher: O'Reilly

*/

// ScrollDemo.java

//A simple JScrollPane demonstration.

//

import java.awt.BorderLayout;

import java.awt.GridLayout;

import javax.swing.ButtonGroup;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JPanel;

import javax.swing.JRadioButton;

import javax.swing.JScrollPane;

public class ScrollDemo extends JFrame {

  JScrollPane scrollpane;

  public ScrollDemo() {

    super("JScrollPane Demonstration");

    setSize(300, 200);

    setDefaultCloseOperation(EXIT_ON_CLOSE);

    init();

    setVisible(true);

  }

  public void init() {

    JRadioButton form[][] = new JRadioButton[12][5];

    String counts[] = { "", "0-1", "2-5", "6-10", "11-100", "101+" };

    String categories[] = { "Household", "Office", "Extended Family",

        "Company (US)", "Company (World)", "Team", "Will",

        "Birthday Card List", "High School", "Country", "Continent",

        "Planet" };

    JPanel p = new JPanel();

    p.setSize(600, 400);

    p.setLayout(new GridLayout(13, 6, 10, 0));

    for (int row = 0; row < 13; row++) {

    ButtonGroup bg = new ButtonGroup();

    for (int col = 0; col < 6; col++) {

    if (row == 0) {

    p.add(new JLabel(counts[col]));

        } else {

          if (col == 0) {

            p.add(new JLabel(categories[row - 1]));

          } else {

            form[row - 1][col - 1] = new JRadioButton();

            bg.add(form[row - 1][col - 1]);

            p.add(form[row - 1][col - 1]);

          }

        }

      }

    }

    scrollpane = new JScrollPane(p);

    getContentPane().add(scrollpane, BorderLayout.CENTER);

  }

  public static void main(String args[]) {

    new ScrollDemo();

  }

}