This is a class that uses reflection to manifest as

JSpinner if JRE 1.4 is installed, otherwise as
a numeric JTextField.

source/org/thdl/util/SimpleSpinner.java

@@ -0,0 +1,127 @@
+/*
+The contents of this file are subject to the THDL Open Community License
+Version 1.0 (the "License"); you may not use this file except in compliance
+with the License. You may obtain a copy of the License on the THDL web site 
+(http://www.thdl.org/).
+
+Software distributed under the License is distributed on an "AS IS" basis, 
+WITHOUT WARRANTY OF ANY KIND, either express or implied. See the 
+License for the specific terms governing rights and limitations under the 
+License. 
+
+The Initial Developer of this software is the Tibetan and Himalayan Digital
+Library (THDL). Portions created by the THDL are Copyright 2001 THDL.
+All Rights Reserved. 
+
+Contributor(s): ______________________________________.
+*/
+
+package org.thdl.util;
+
+import javax.swing.*;
+import java.awt.*;
+import java.lang.reflect.*;
+
+public class SimpleSpinner extends JPanel {
+	JTextField textSpinner = null;
+	Object jSpinner = null;
+	Class[] getSetParameterTypes;
+	Method getMethod, setMethod;
+
+//add SpinnerNumberModel so that player.getEndTime() is max, and 0 min
+
+	public SimpleSpinner() {
+		jSpinner = SimpleSpinner.createObject("javax.swing.JSpinner");
+		if (jSpinner == null) {
+			textSpinner = new JTextField("0");
+			setLayout(new BorderLayout());
+			add("Center", textSpinner);
+		} else {
+			getSetParameterTypes = new Class[] {Object.class};
+			setLayout(new BorderLayout());
+			add("Center", (JComponent)jSpinner);
+		}
+	}
+	public void setValue(Integer num) {
+		if (jSpinner == null) {
+			textSpinner.setText(num.toString());
+		} else { //must be JSpinner
+			Object[] argument = new Object[] {num};
+			try {
+				setMethod = jSpinner.getClass().getMethod("setValue", getSetParameterTypes);
+				setMethod.invoke(jSpinner, argument);
+			} catch (NoSuchMethodException nsme) {
+				nsme.printStackTrace();
+				ThdlDebug.noteIffyCode();
+			} catch (IllegalAccessException illae) {
+				illae.printStackTrace();
+				ThdlDebug.noteIffyCode();
+			} catch (InvocationTargetException ite) {
+				ite.printStackTrace();
+				ThdlDebug.noteIffyCode();
+			}
+		}
+	}
+	public Integer getValue() {
+		if (jSpinner == null) {
+			try {
+				return new Integer(textSpinner.getText());
+			} catch (NumberFormatException nfe) {
+				nfe.printStackTrace();
+				ThdlDebug.noteIffyCode();
+			}
+		} else { //must be JSpinner
+			try {
+				setMethod = jSpinner.getClass().getMethod("getValue", null);
+				return (Integer)setMethod.invoke(jSpinner, null);
+			} catch (NoSuchMethodException nsme) {
+				nsme.printStackTrace();
+				ThdlDebug.noteIffyCode();
+			} catch (IllegalAccessException illae) {
+				illae.printStackTrace();
+				ThdlDebug.noteIffyCode();
+			} catch (InvocationTargetException ite) {
+				ite.printStackTrace();
+				ThdlDebug.noteIffyCode();
+			}
+		}
+		return null;
+	}
+
+   static Object createObject(String className) {
+      Object object = null;
+      try {
+          Class classDefinition = Class.forName(className);
+          object = classDefinition.newInstance();
+      } catch (InstantiationException e) {
+          System.out.println(e);
+      } catch (IllegalAccessException e) {
+          System.out.println(e);
+      } catch (ClassNotFoundException e) {
+          System.out.println(e);
+      }
+      return object;
+   }
+}
+
+/* originally slated for JdkVersionHacks by dlc
+
+	public static Object getJSpinner(Dimension dim,
+									  Object spinnerValue,
+									  int value, int minimum,
+									  int maximum, int stepSize) {
+		In Java 1.4, do the following:
+
+		   SpinnerNumberModel snm1
+		     = new SpinnerNumberModel(value, minimum, maximum, stepSize);
+           JSpinner spinner = new JSpinner(snm1);
+           spinner.setPreferredSize(dim);
+           spinner.setValue(spinnerValue);
+           return spinner;
+
+		
+
+		FIXME;
+		return null;
+	}
+*/