Message Dialog

---(Source List)---

//Example17
import java.awt.BorderLayout;
import java.awt.Frame;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;

public class Example17 {
	private static final String btnNumericCheck_code = "Integer Check";
	private static final String btnNumberRangeCheck_title = "1 - 5";
	private static final String btnNumberRangeCheck_code = "1 - 5 Check";
	private static final String window_title = "Check Number and Message Dialog";
	private static final int locateX = 10;
	private static final int locateY = 10;
	private static final int window_width = 640;
	private static final int window_height = 400;
	private static final int tf01_size = 5;
	private static final int tf02_size = 2;
	JTextField tf01 = new JTextField("", Example17.tf01_size);
	JTextField tf02 = new JTextField("", Example17.tf02_size);
	// main
	public static void main(final String ar[]) {
		final Example17 sample = new Example17();
	}

	// constructor
	public Example17() {
		// make frame
		final JFrame f = new JFrame(Example17.window_title);
		f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		// add Buttons
		final JButton btnNumberCheck = new JButton(
				Example17.btnNumericCheck_code);
		btnNumberCheck.setActionCommand(Example17.btnNumericCheck_code);
		btnNumberCheck.addActionListener(new PushButtonActionListener(f));
		final JButton btnNumberRangeCheck = new JButton(
				Example17.btnNumberRangeCheck_title);
		btnNumberRangeCheck
				.setActionCommand(Example17.btnNumberRangeCheck_code);
		btnNumberRangeCheck.addActionListener(new PushButtonActionListener(f));
		// layout Buttons and TextFields
		final JPanel p1 = new JPanel();
		p1.add(btnNumberCheck);
		p1.add(btnNumberRangeCheck);
		f.getContentPane().add(p1, BorderLayout.NORTH);
		final JPanel p2 = new JPanel();
		p2.add(this.tf01);
		p2.add(this.tf02);
		f.getContentPane().add(p2, BorderLayout.CENTER);
		// show frame
		f.setLocation(Example17.locateX, Example17.locateY);
		f.setSize(Example17.window_width, Example17.window_height);
		f.setVisible(true);
	}

	// actonListener at pushbutton
	private class PushButtonActionListener implements ActionListener {
		private static final String message01 = "Please input number!";
		private static final String message02 = "Please input 1 - 5!";
		private static final String ErrorDialog_title = "Error Message";
		JFrame f = null;

		public PushButtonActionListener(final JFrame af) {
			this.f = af;
		}

		public void actionPerformed(final ActionEvent ae) {
			final String strnum = "0123456789";
			final String str1to5 = "12345";
			if (ae.getActionCommand() == Example17.btnNumericCheck_code) {
				final String str = Example17.this.tf01.getText();
				if (str.length() == 0) {
					final ErrDialog dia = new ErrDialog(this.f,
							PushButtonActionListener.ErrorDialog_title,
							PushButtonActionListener.message01);
					return;
				}
				for (int i = 0; i < str.length(); i++) {
					if (strnum.indexOf(str.substring(i, i + 1)) == -1) {
						final ErrDialog dia = new ErrDialog(this.f,
								PushButtonActionListener.ErrorDialog_title,
								PushButtonActionListener.message01);
						return;
					}
				}
			}
			if (ae.getActionCommand() == Example17.btnNumberRangeCheck_code) {
				final String str = Example17.this.tf02.getText();
				if (str.length() != 1) {
					final ErrDialog dia = new ErrDialog(this.f,
							PushButtonActionListener.ErrorDialog_title,
							PushButtonActionListener.message02);
					return;
				}
				if (str1to5.indexOf(str) == -1) {
					final ErrDialog dia = new ErrDialog(this.f,
							PushButtonActionListener.ErrorDialog_title,
							PushButtonActionListener.message02);
					return;
				}
			}
		}
	}

	// dialog
	class ErrDialog extends JDialog {
		private static final int dialog_locateX = 10;
		private static final int dialog_locateY = 10;
		private static final int dialog_width = 200;
		private static final int dialog_height = 100;
		private static final long serialVersionUID = 1L;

		ErrDialog(final Frame f, final String title, final String msg) {
			// make modal dialog
			final JDialog dia = new JDialog(f, title, true);
			// add label
			final JLabel lab = new JLabel(msg);
			dia.getContentPane().add(BorderLayout.NORTH, lab);
			// show modal dialog
			dia.setLocation(ErrDialog.dialog_locateX, ErrDialog.dialog_locateY);
			dia.setSize(ErrDialog.dialog_width, ErrDialog.dialog_height);
			dia.setVisible(true);
		}
	}
}