Thread: n00b asking jspinner question

When posting code, please use the highlight tags. Unformatted code is very hard to read.

You're going to have to set up some custom listeners or create a custom editor that does what you want.

It's not complicated, that's the thing. Create a JTextField that behaves how you want, then set it as the editor using the JSpinner.setEditor() function.

Originally Posted by KevinWorkman

It's not complicated, that's the thing. Create a JTextField that behaves how you want, then set it as the editor using the JSpinner.setEditor() function.

I would love to do that but i`m not java programmer and i am just trying to edit existing program i own.
If i see the code i can apply it just like i already rearrange 50 different things to my liking in that same program(just so you dont think i am lazy ,yesterday i was actually coding one simple upgrade and it took me solid 10 hours :-)).
And this thing is driving me crazy because googling for some helpful code is not working unlike other java question i was able to solve.
Thanks

Which part is giving you trouble? I suggest building a standalone program separate from your main code, that way you can work with the JTextField by itself, then set that JTextField as a JSpinner's editor without worrying about any other code. That will also make it easier for us to help you as you get stuck along the way.

Bah , i `m trying the whole day doing something with listeners and JTextField but it gives me this error:
The method addFocusListener(FocusListener) in the type Component is not applicable for the arguments (OrderDialog)
I dont know ,like i said i am not a java programmer so if someone has the time to do some code example i could then learn from
it would be great.

If you posted an SSCCE along with the full stack trace, I'm sure somebody would be happy to help you.

I am trying to do a jspinner with jtextfield editor as advised here but i dont understand why in code below when i click(second time) on a button
error appears?

package components;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
 
import javax.swing.*;
import javax.swing.event.DocumentEvent;
import javax.swing.event.DocumentListener;
import javax.swing.text.JTextComponent;
 
public class JSpinnerComp{
	protected static final JTextComponent label_1 = null;
	private JTextField textfield;
	public static void main(String[] args) {
		JSpinnerComp h = new JSpinnerComp();
	}
	private double TextTolabel() {		
		return Double.valueOf(textfield.getText());
 
	}
 
 
	public JSpinnerComp(){
		JFrame frame = new JFrame("Creating a JSpinner Component");
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.getContentPane().setLayout(null);
 
		textfield = new JTextField();
		textfield.setBounds(36, 226, 148, 54);
 
		textfield.getDocument().addDocumentListener(new DocumentListener() {
 
			public void changedUpdate(DocumentEvent e) {
				System.out.println(TextTolabel());
 
			}
			  public void removeUpdate(DocumentEvent e) {
				  System.out.println(TextTolabel());
 
			  }
			  public void insertUpdate(DocumentEvent e) {
				  System.out.println(TextTolabel());
 
			  }
		});
 
		frame.getContentPane().add(textfield);
		textfield.setColumns(10);
 
		JSpinner spinner_1 = new JSpinner();
		spinner_1.setBounds(61, 140, 243, 20);
		frame.getContentPane().add(spinner_1);
		frame.setSize(414,380);
		frame.setVisible(true);
		spinner_1.setEditor(textfield);
 
		JButton btnNewButton = new JButton("New button");
		btnNewButton.setBounds(215, 233, 89, 23);
		frame.getContentPane().add(btnNewButton);
		btnNewButton.addActionListener(new ActionListener() {
			public void actionPerformed(final ActionEvent arg0) {				
 
				textfield.setText("112");
			}
		});	
 
	}
	}

error appears

Please post the full text of the error message.

Please Edit your post and wrap your code with[code=java]<YOUR CODE HERE>[/code] to get highlighting

Exception in thread "AWT-EventQueue-0" java.lang.NumberFormatException: empty String
at sun.misc.FloatingDecimal.readJavaFormatString(Unkn own Source)
at java.lang.Double.valueOf(Unknown Source)
at components.JSpinnerComp.TextTolabel(JSpinnerComp.j ava:17)

The String passed to valueOf on line 17 was empty.
You need to test if the String passed to the Double class's valueOf() method is empty before calling the method.
If the String is empty the method will throw the above exception.
See the String class API doc for methods to test if a String is empty.

Ok , i am 99% done .
I resolve empty string problem and few other issues as well , and only 1 little thing is left.
In this example i manage for jspinner to finally start spinning numbers displayed on his new textfield editor but
the problem is that it will not display 5 decimal places all the time
So it goes like this:
1.30090
1.301
1.3011

And i want it to spin like this:
1.30090
1.30100
1.30110

I tried formatting the textfield with number format as shown in code but that work only if i manually enter the number and remove the focus
How can i solve this?

package components;
import java.awt.event.ActionEvent;
 
public class JSpinnerComp{
	protected static final JTextComponent label_1 = null;
	private JTextField textfield;
	public static void main(String[] args) {
		JSpinnerComp h = new JSpinnerComp();
	}
	 double a;		
 
 
		private double place() {
			return Double.valueOf(textfield.getText().trim().length());
		} 
 
	public JSpinnerComp(){
 
		JFrame frame = new JFrame("Creating a JSpinner Component");
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.getContentPane().setLayout(null);
		textfield = new JFormattedTextField(new DecimalFormat("#.00000"));
		textfield.setText("1.12345");
		textfield.setBounds(36, 226, 148, 54);
				textfield.getDocument().addDocumentListener(new DocumentListener() {	
			public void changedUpdate(DocumentEvent e) {
				System.out.println(a);
			}
			  public void removeUpdate(DocumentEvent e) {
				  System.out.println(a);
			  }
			  public void insertUpdate(DocumentEvent e) {
				  System.out.println(a);
			  }
		});
 
 
 
		 frame.getContentPane().add(textfield);
		textfield.setColumns(10);
 
		final JSpinner spinner_1 = new JSpinner();
		spinner_1.setModel(new SpinnerNumberModel(new Double(0), null, null, new Double(1)));
		spinner_1.setBounds(61, 140, 243, 20);
		frame.getContentPane().add(spinner_1);
		frame.setSize(414,380);
		frame.setVisible(true);
		spinner_1.setEditor(textfield);
 
 
		spinner_1.addChangeListener(new ChangeListener() {
			double newValue = (Double) spinner_1.getValue();
			double old;
			public void stateChanged(final ChangeEvent arg0) {
 
 
				if (old >newValue) {
					if (place()>0){
	            	  textfield.setText(Double.toString(Math.round(((Double.valueOf(textfield.getText())-0.00010))*100000)/100000.0));
 
				}
				} else {
					if (place()>0){
 
					textfield.setText(Double.toString(Math.round(((Double.valueOf(textfield.getText())+0.00010))*100000)/100000.0));
 
 
					}
			}
 
				old=newValue;
			}
 
		});
 
 
		 JButton btnNewButton = new JButton("New button");
		btnNewButton.setBounds(215, 233, 89, 23);
		frame.getContentPane().add(btnNewButton);
 
		JCheckBox chckbxNewCheckBox = new JCheckBox("New check box");
		chckbxNewCheckBox.setBounds(38, 270, 97, 23);
		frame.getContentPane().add(chckbxNewCheckBox);
		btnNewButton.addActionListener(new ActionListener() {
			public void actionPerformed(final ActionEvent arg0) {				
 
 
			}
		});	
 
	}
	}

Please Edit your post and wrap your code with[code=java]<YOUR CODE HERE>[/code] to get highlighting

Your end code tag is wrong. Change QUOTE to CODE

You will need to use a number formatting class or method to create the String representation that you want for a numeric value.

See the DecimalFormat class or the String class's formatting method.

Hmm, i dont think this is a big issue because there are no visible bugs after it happens but i am curious ,
When i select numbers over the new jspinner textfield editor i sometimes ,not always, get this error message showing .
Mouse dragging when selecting is doing something,so is there some easy fix or maybe i should just ignore this ?

EDIT;BTW number 7 at the beginning is max number of characters allowed to be entered in jtextfield editor.

Exception in thread "AWT-EventQueue-0" java.lang.ArrayIndexOutOfBoundsException: 7
at sun.font.FontDesignMetrics.charsWidth(Unknown Source)
at javax.swing.text.Utilities.getTabbedTextOffset(Unk nown Source)
at javax.swing.text.Utilities.getTabbedTextOffset(Unk nown Source)
at javax.swing.text.Utilities.getTabbedTextOffset(Unk nown Source)
at javax.swing.text.PlainView.viewToModel(Unknown Source)
at javax.swing.text.FieldView.viewToModel(Unknown Source)
at javax.swing.plaf.basic.BasicTextUI$RootView.viewTo Model(Unknown Source)
at javax.swing.plaf.basic.BasicTextUI.viewToModel(Unk nown Source)
at javax.swing.text.DefaultCaret.moveCaret(Unknown Source)
at javax.swing.text.DefaultCaret.mouseDragged(Unknown Source)
at java.awt.AWTEventMulticaster.mouseDragged(Unknown Source)
at java.awt.Component.processMouseMotionEvent(Unknown Source)
at javax.swing.JComponent.processMouseMotionEvent(Unk nown Source)
at java.awt.Component.processEvent(Unknown Source)
at java.awt.Container.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.LightweightDispatcher.retargetMouseEvent( Unknown Source)
at java.awt.LightweightDispatcher.processMouseEvent(U nknown Source)
at java.awt.LightweightDispatcher.dispatchEvent(Unkno wn Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Window.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilter s(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(U nknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarch y(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)

ArrayIndexOutOfBoundsException: 7

The code is using an index that is past the end of the array.
Remember that array index values are 0 based and range from 0 to the length-1 of the array.

To keep this from happening, do not use an array index that is past the end of the array. Use an if statement to test its value.

Not sure what highlighting means. Many components use various visual changes to show change in state. what state does the double click change the textfield to? There might be ways to change the display for the textfield when it is in that state. Look at the API doc