Programmer's study diary - my first java program

The successful operation of the first java program gave me a new understanding of java, and my interest came, haha.

package Clock;

public class Clock {
private Disply hour =new Disply(24);
private Disply minute=new Disply(60);

public void start() {
while(true) {
minute.increase();
if(minute.getValue()==0 )
{
hour.increase();
}
System.out.printf("%02d:%02d\n", hour.getValue(),minute.getValue());
}
}
public static void main(String[] args) {
Clock clock=new Clock();
clock.start();
}


}