This example shows, how to create the Gauge class to draw the interactive and non-interactive gauge which is used to display the volume label.

Interactive, Non-Interactive Gauge Example

     

This example shows, how to create the Gauge class to draw the interactive and non-interactive gauge which is used to display the volume label.

The javax.microedition.lcdui.Gauge class has only one constructor as:

Gauge(String label, boolean interactive, int maxValue, int initialValue):- This is used to creates a new Gauge object with the given label, in interactive or non-interactive mode, with the given maximum and initial values.

In this Interactive gauge example, we are using following methods:

• getMaxValue()
• getValue()
• isInteractive()
• setMaxValue(int maxValue) 
• setValue(int value)

The Application is as follows:

 

 

Source Code of GaugeExample.java

 

import javax.microedition.lcdui.*; import javax.microedition.midlet.*; public class GaugeExample extends MIDlet implements CommandListener{   private Form form;   private Display display;   private Command back;   private String label1, label2;   private Gauge gauge1, gauge2;      public GaugeExample(){   label1 = new String("Interactive");   label2 = new String("Non-Interactive");   gauge1 = new Gauge("Interactive", true, 100, 40);   gauge2 = new Gauge("Static", false, 100, 40);    }   public void startApp(){   Form form = new Form("GaugeExample");   back = new Command("Exit", Command.EXIT, 0);   display = Display.getDisplay(this);   form.append(label1);   form.append(gauge1);   form.append(label2);   form.append(gauge2);   form.addCommand(back);   form.setCommandListener(this);   display.setCurrent(form);   }   public void pauseApp(){}   public void destroyApp(boolean unconditional){   notifyDestroyed();   }   public void commandAction(Command c, Displayable s){   String label = c.getLabel();   if (label.equals("EXIT")){   destroyApp(false);   }     } }

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