有人可以告诉我，我不能建造这段代码吗？ Gauge有问题，但我不明白我需要改变什么或什么。
当我尝试Bulid时，它会显示错误。
Building "Alert01"
warning: [options] source value 1.3 is obsolete and will be removed in a future release
warning: [options] target value 1.3 is obsolete and will be removed in a future release
warning: [options] To suppress warnings about obsolete options, use -Xlint:-options.
C:\Users\Benita\j2mewtk\2.5.2\apps\Alert01\src\Alert01.java:112: error: cannot find symbol
alert.setIndicator(gauge);
^
symbol: method setIndicator(Gauge)
location: variable alert of type Alert
1 error
3 warnings
com.sun.kvem.ktools.ExecutionException
Build failed
建立此代码
package Alert01;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Alert;
import javax.microedition.lcdui.AlertType;
import javax.microedition.lcdui.Image;
import javax.microedition.lcdui.TextBox;
import javax.microedition.lcdui.TextField;
import javax.microedition.midlet.MIDlet;
import java.util.Timer;
import java.util.TimerTask;
import java.util.Date;
import javax.microedition.lcdui.Gauge;
public class Alert01 extends MIDlet{
Alert01 theMidlet;
Image image;
int count = 0;
long baseTime;
public Alert01(){
System.out.println("Construct MIDlet");
theMidlet = this;
baseTime = new Date().getTime()/1000;
}//end constructor
//----------------------------------------------------//
public void startApp(){
System.out.println("Create and display a TextBox");
TextBox textBox = new TextBox("TextBox Title",
"TextBox contents",
50,//width
TextField.ANY);
//Make the TextBox the current Displayable object.
Display.getDisplay(this).setCurrent(textBox);
//Now create and schedule a TimerTask that will
// display and sound an alert repeatedly. The Alert
// first appears at two seconds and repeats every
// three seconds.
Timer myTimer = new Timer();
myTimer.schedule(new MyTimerTask(),2000,3000);
//Sleep for 20 seconds.
try{Thread.currentThread().sleep(20000);
} catch(Exception e){}
//Cancel the timer.
myTimer.cancel();
//Enter the destroyed state.
this.destroyApp(true);
}//end startApp
public void pauseApp(){
}//end pauseApp
public void destroyApp(boolean unconditional){
System.out.println("Destroy MIDlet");
notifyDestroyed();
}//end destroyApp
//----------------------------------------------------//
//This is a member class
class MyTimerTask extends TimerTask{
long time;
public void run(){
System.out.println("Display an Alert");
try{
//Select among two image files on the basis of
// whether the current time in seconds is odd
// or even.
time = new Date().getTime()/1000 - baseTime;
//Note that the following file names are case
// sensitive.
if((time % 2) == 0){//Even value
image = Image.createImage(
"/Alert01/redball.PNG");
}else{//Odd value
image = Image.createImage(
"/Alert01/blueball.PNG");
}//end else
//Create an Alert object of type ALARM. This
// results in an audible alarm that sounds like a
// telephone ringing.
Alert alert = new Alert("Alert Title",
"",
image,
AlertType.ALARM);
//Cause the alert to display the time in seconds.
alert.setString("Time in seconds:" + time);
//Cause the alert to be visible for two seconds.
alert.setTimeout(2000);
//Create a Gauge that shows six bars.
Gauge gauge = new Gauge(null,false,6,0);
//Set the number of Gauge bars to be illuminated.
gauge.setValue(++count);
//Attach the Gauge to the alert.
alert.setIndicator(gauge);
//Make the Alert the current Displayable object.
Display.getDisplay(theMidlet).setCurrent(alert);
}catch(Exception e){
e.printStackTrace();
}//end catch
}//end run
}//end class MyTimerTask
//====================================================//
}//end class Alert01
//======================================================//