Ich muss eine 24-Stunden-Uhr in eine 12-Stunden-Uhr ändern. Ich habs aber mit einem Problem: Ich bekomme Mitternacht 00:00 am statt 12:00 am. Hier ist mein Code, den ich habe.
public class ClockDisplay
{
private NumberDisplay hours;
private NumberDisplay minutes;
private String displayInternationalString;
private String displayUSString;
/**
* Constructor for ClockDisplay objects. This constructor
* creates a new clock set at 00:00.
*/
public ClockDisplay()
{
hours = new NumberDisplay(24);
minutes = new NumberDisplay(60);
updateDisplayInternational();
updateDisplayUS();
}
/**
* Constructor for ClockDisplay objects. This constructor
* creates a new clock set at the time specified by the
* parameters.
*/
public ClockDisplay(int hour, int minute)
{
hours = new NumberDisplay(24);
minutes = new NumberDisplay(60);
setTime(hour, minute);
}
/**
* This method should get called once every minute - it makes
* the clock display go one minute forward.
*/
public void timeTick()
{
minutes.increment();
if(minutes.getValue() == 0) { // it just rolled over!
hours.increment();
}
updateDisplayInternational();
updateDisplayUS();
}
/**
* Set the time of the display to the specified hour and
* minute.
*/
public void setTime(int hour, int minute)
{
hours.setValue(hour);
minutes.setValue(minute);
updateDisplayInternational();
updateDisplayUS();
}
/**
* Return the current time of this display in the format HH:MM.
*/
public String getInternationalTime()
{
return displayInternationalString;
}
public String getUSTime()
{
return displayUSString;
}
/**
* Update the internal string that represents the display.
*/
private void updateDisplayInternational()
{
displayInternationalString = hours.getDisplayValue() + ":" +
minutes.getDisplayValue();
}
private void updateDisplayUS()
{
if(hours.getValue() < 12)
{
displayUSString = hours.getDisplayValue() + ":" +
minutes.getDisplayValue() + " am";
}
else if(hours.getValue() > 12 && hours.getValue() <24)
{
displayUSString = Integer.toString(hours.getValue() - 12) + ":" +
minutes.getDisplayValue() + " pm";
}
else if(hours.getValue() == 0)
{
hours.setValue(12);
displayUSString = hours.getDisplayValue() + ":"+
minutes.getDisplayValue() + " am";
}
else
{
hours.setValue(12);
displayUSString = hours.getDisplayValue() + ":" +
minutes.getDisplayValue() + " pm";
}
}
}
public class ClockDisplay
{
private NumberDisplay hours;
private NumberDisplay minutes;
private String displayInternationalString;
private String displayUSString;
/**
* Constructor for ClockDisplay objects. This constructor
* creates a new clock set at 00:00.
*/
public ClockDisplay()
{
hours = new NumberDisplay(24);
minutes = new NumberDisplay(60);
updateDisplayInternational();
updateDisplayUS();
}
/**
* Constructor for ClockDisplay objects. This constructor
* creates a new clock set at the time specified by the
* parameters.
*/
public ClockDisplay(int hour, int minute)
{
hours = new NumberDisplay(24);
minutes = new NumberDisplay(60);
setTime(hour, minute);
}
/**
* This method should get called once every minute - it makes
* the clock display go one minute forward.
*/
public void timeTick()
{
minutes.increment();
if(minutes.getValue() == 0) { // it just rolled over!
hours.increment();
}
updateDisplayInternational();
updateDisplayUS();
}
/**
* Set the time of the display to the specified hour and
* minute.
*/
public void setTime(int hour, int minute)
{
hours.setValue(hour);
minutes.setValue(minute);
updateDisplayInternational();
updateDisplayUS();
}
/**
* Return the current time of this display in the format HH:MM.
*/
public String getInternationalTime()
{
return displayInternationalString;
}
public String getUSTime()
{
return displayUSString;
}
/**
* Update the internal string that represents the display.
*/
private void updateDisplayInternational()
{
displayInternationalString = hours.getDisplayValue() + ":" +
minutes.getDisplayValue();
}
private void updateDisplayUS()
{
if(hours.getValue() < 12)
{
displayUSString = hours.getDisplayValue() + ":" +
minutes.getDisplayValue() + " am";
}
else if(hours.getValue() > 12 && hours.getValue() <24)
{
displayUSString = Integer.toString(hours.getValue() - 12) + ":" +
minutes.getDisplayValue() + " pm";
}
else if(hours.getValue() == 0)
{
hours.setValue(12);
displayUSString = hours.getDisplayValue() + ":"+
minutes.getDisplayValue() + " am";
}
else
{
hours.setValue(12);
displayUSString = hours.getDisplayValue() + ":" +
minutes.getDisplayValue() + " pm";
}
}
}
