Confused with 'Class SpinnerNumberModel'

[Khan Baba]

Hello Friend,

I am studying the java programming language. In which I am getting troubled while understanding the few concepts of java. According to me the class are very complicated functionality. I need your help to be aware about the 'Class SpinnerNumberModel' of java programming. I have referred many book over this concept, but nothing was helpful. I wonder if you are able provide me something about the Class SpinnerNumberModel. I am waiting for your reply.

[kelfro]

Hi friend,

The SpinnerNumberModel class related to the sequences of numbers. The upper and lower bounds of the sequence are defined by properties called minimum and maximum. The size of the increase or decrease computed by the nextValue and previousValue methods is defined by a property called stepSize. The minimum and maximum properties can be null to indicate that the sequence has no lower or upper limit.

[opaper]

Please study following example of Class SpinnerNumberModel of java:

import javax.swing.SpinnerModel;
import javax.swing.SpinnerNumberModel;
import java.awt.BorderLayout;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JSpinner;

public class SpinnerNumberDemo {
  public static void main(String arg[]) 
{
    JFrame frame5 = new JFrame("JSpinner Sample");
    frame5.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    SpinnerModel model01 = new SpinnerNumberModel();
  
  JSpinner spinner01 = new JSpinner(model01);
    JLabel label01 = new JLabel("Numbers");
    JPanel panel01 = new JPanel(new BorderLayout());
    panel01.add(label1, BorderLayout.WEST);
    panel01.add(spinner1, BorderLayout.CENTER);
  
  frame5.add(panel1, BorderLayout.SOUTH);
    frame.setSize(150, 80);
    frame.setVisible(true);
  }
}

[MindSpace]

The 'Class SpinnerNumberModel' integrates four constructor, Refer following it's constructors with various parameters:

1. SpinnerNumberModel(Number val, Comparable min, Comparable max, Number SizeofSize)
2. SpinnerNumberModel(double val, double min, double max, double SizeofSize) SpinnerNumberModel()
3. SpinnerNumberModel(int val, int min, int max, int SizeofSize)

[Praetor]

Hi

I suggest you to refer below java code which will depict you the methods of SpinnerNumberModel class:

public SpinnerNumberModel(Number val, Comparable maximum, Comparable minimum, Number Size)
Number value1 = new Integer(60);
Number max1 = new Integer(150);
Number min1 = new Integer(0);
Number step1 = new Integer(2);
SpinnerModel model = new SpinnerNumberModel(value1, min1, max1, step1);
JSpinner spinner = new JSpinner(model);

[Katty]

Hello friend,

We can use number of method of SpinnerNumberModel class, some of them are mentioned below:

• setValue(Object val)
• setStepSize(Number SizeofStep)
• setPreviousValue()
• setMinimum(Comparable min)
• getNextValue()
• setMaximum(Comparable max)
• getMinimum()