AdjustmentTest.java Source code

Introduction

Here is the source code for AdjustmentTest.java

Source

import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.event.AdjustmentEvent;
import java.awt.event.AdjustmentListener;

import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JScrollBar;
import javax.swing.JScrollPane;

public class AdjustmentTest {
    public static void main(String args[]) {
        JFrame frame = new JFrame();
        Container contentPane = frame.getContentPane();
        Icon icon = new ImageIcon("java2s.gif");
        JButton b = new JButton(icon);
        JScrollPane pane = new JScrollPane(b);
        AdjustmentListener hListener = new AdjustmentListener() {
            public void adjustmentValueChanged(AdjustmentEvent e) {
                System.out.println("Horizontal: ");
                dumpInfo(e);
            }
        };
        JScrollBar hBar = pane.getHorizontalScrollBar();
        hBar.addAdjustmentListener(hListener);
        AdjustmentListener vListener = new AdjustmentListener() {
            public void adjustmentValueChanged(AdjustmentEvent e) {
                System.out.println("Vertical: ");
                dumpInfo(e);
            }
        };
        JScrollBar vBar = pane.getVerticalScrollBar();
        vBar.addAdjustmentListener(vListener);
        contentPane.add(pane, BorderLayout.CENTER);
        frame.setSize(300, 200);
        frame.show();
    }

    private static void dumpInfo(AdjustmentEvent e) {
        System.out.println("\tValue: " + e.getValue());
        String type = null;
        switch (e.getAdjustmentType()) {
        case AdjustmentEvent.TRACK:
            type = "Track";
            break;
        case AdjustmentEvent.BLOCK_DECREMENT:
            type = "Block Decrement";
            break;
        case AdjustmentEvent.BLOCK_INCREMENT:
            type = "Block Increment";
            break;
        case AdjustmentEvent.UNIT_DECREMENT:
            type = "Unit Decrement";
            break;
        case AdjustmentEvent.UNIT_INCREMENT:
            type = "Unit Increment";
            break;
        }
        System.out.println("\tType: " + type);
    }
}