Thread: SpinnerListModel setList(List<?> list)

I'm being challenged by SpinnerListModel's setList(List<?> list) method.

Currently I have defined a SpinnerListModel:

private static Vector Hours12Strings = new Vector();
static{
Hours12Strings.add("1");
......... etc..........
}

Later on in "createGUI"


SpinnerListModel hoursModel = new SpinnerListModel(Hours12Strings);

This works fine.

I have also created a static Vector named Hours24Strings and I would like to switch between 12 and 24 hour modes so I do:

if(checkBox1224.isSelected()){
hoursModel.setList((java.util.List)Hours24Strings) ;
}else{
hoursModel.setList((java.util.List)Hours12Strings) ;
}

And the compiler gives me the following error:

java:150: cannot find symbol
[javac] symbol : method setList(java.util.Vector)
[javac] location: interface javax.swing.SpinnerModel
[javac] hoursModel.setList(Hours24Strings);
[javac] ^

I'm being "dense" / what am I missing?

Thanks in advance.
roy

Vector implements List, so there shouldn't be a need to perform the class cast, and a setList method that accepts a List should work for a Vector. Can you provide a short compilable example the demo's the problem?

here's the compilable version:

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;        
import javax.swing.event.*;        
import java.util.*;
import java.io.PrintWriter;
import java.io.ByteArrayOutputStream;
 
public class DigitalTimePanel 
extends JPanel
implements ActionListener
{	
	public DigitalTimePanel()
	{
		super();
		initialize();
	}
 
	private static Vector Hours24Strings = null;
	private static Vector Hours12Strings = null;
 
	static 
	{
		Hours24Strings = new Vector();
		for(int n = 0; n < 24; n++){ Hours24Strings.add( Formatter(n)); }
 
		Hours12Strings = new Vector();
		for(int n = 0; n <13; n++){ Hours12Strings.add( (n == 0 ? "12" : Formatter(n))); }
	}
 
   	private static String Formatter(int value)
   	{
   		ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
   		PrintWriter pw = new PrintWriter(byteArrayOutputStream);
   		pw.format("%1$02d",value);
   		pw.flush();
   		return byteArrayOutputStream. toString();
   	}
 
	private void initialize()
	{
 
		setLayout(new FlowLayout(FlowLayout.CENTER,2,1));
		JPanel p = new JPanel(new GridLayout(2,1));
		add(p);
 
		JPanel sp = new JPanel(new FlowLayout(FlowLayout.LEFT, 2,1));
		p.add(sp);
			hoursModel = new SpinnerListModel(Hours12Strings);
			hoursSpinner =  new JSpinner(hoursModel);
			sp.add(hoursSpinner);
 
		sp = new JPanel(new FlowLayout(FlowLayout.CENTER, 2,1));
		p.add(sp);
			checkBox1224 = new JCheckBox("24 hour");
			checkBox1224.setSelected(is24Hours);
			checkBox1224.addActionListener(this);
			sp.add(checkBox1224);
   	}	
 
 
    	public JFormattedTextField getTextField(JSpinner spinner) 
    	{
		JComponent editor = spinner.getEditor();
		if (editor instanceof JSpinner.DefaultEditor) {
			return ((JSpinner.DefaultEditor)editor).getTextField();
		} else {
			System.err.println("Unexpected editor type: " + spinner.getEditor().getClass() + " isn't a descendant of DefaultEditor");
			return null;
		}
	}
 
      	private JSpinner hoursSpinner =  null;	
	private SpinnerModel hoursModel = null;
 
	private JCheckBox checkBox1224 = null;
  	private boolean is24Hours = false;
 
	public void actionPerformed(ActionEvent e)
	{
		Object source = e.getSource();
		if(source == checkBox1224){
			if(checkBox1224.isSelected()){
				hoursModel.setList(Hours24Strings);
			}else{
				hoursModel.setList(Hours12Strings);
			}
		}
	}
 
	public void set24Hours(boolean is24Hours)
	{
		this.is24Hours = is24Hours; 
		checkBox1224.setSelected(is24Hours);
	}
 
}

Which gives javac DigitalTimePanel.java yields:

DigitalTimePanel.java:26: warning: [unchecked] unchecked call to add(E) as a member of the raw type java.util.Vector
		for(int n = 0; n < 24; n++){ Hours24Strings.add( Formatter(n)); }
		                                               ^
DigitalTimePanel.java:29: warning: [unchecked] unchecked call to add(E) as a member of the raw type java.util.Vector
		for(int n = 0; n <13; n++){ Hours12Strings.add( (n == 0 ? "12" : Formatter(n))); }
		                                              ^
DigitalTimePanel.java:85: cannot find symbol
symbol  : method setList(java.util.Vector)
location: interface javax.swing.SpinnerModel
				hoursModel.setList(Hours24Strings);
				          ^
DigitalTimePanel.java:87: cannot find symbol
symbol  : method setList(java.util.Vector)
location: interface javax.swing.SpinnerModel
				hoursModel.setList(Hours12Strings);
				          ^
2 errors
2 warnings

The function setList is not defined for the interface SpinnerModel - the code abstracts the SpinnerListModel to SpinnerModel, eg:

SpinnerModel hoursModel = new SpinnerListModel();

Define it as a SpinnerListModel which defines this method and it should compile.

Originally Posted by copeg

The function setList is not defined for the interface SpinnerModel - the code abstracts the SpinnerListModel to SpinnerModel, eg:

SpinnerModel hoursModel = new SpinnerListModel();

Define it as a SpinnerListModel which defines this method and it should compile.

Good spot!! That's what I get from working on too many things yesterday

Thanks for the help!