Java Swing - 如何為JSpinner創(chuàng)建自定義渲染器以顯示自定義內容圖標

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/*
Java Swing, 2nd Edition
By Marc Loy, Robert Eckstein, Dave Wood, James Elliott, Brian Cole
ISBN: 0-596-00408-7
Publisher: O'Reilly 
*/
// IconSpinner.java
//An implementation of JSpinner with customized content--icons in this case.
//A standard spinner model is used with a custom editor (IconEditor.java).
//
import java.awt.Container;
import java.awt.GridLayout;
import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JSpinner;
import javax.swing.SpinnerListModel;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
public class Main extends JFrame {
    public Main() {
        super("JSpinner Icon Test");
        setSize(300, 80);
        setDefaultCloseOperation(EXIT_ON_CLOSE);
 
 
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