package base;
 
import java.util.Calendar;
 
import javax.swing.SwingWorker;
 
public class CheckTime extends SwingWorker{
 
	private int copyHour;
	private int copyMin;
	private int copySec;
	private boolean running;
 
	public  CheckTime(int hour,int min, int sec){
		copyHour = hour;
		copyMin = min;
		copySec = sec;
		}
 
	protected Object doInBackground() throws Exception {
		Calendar calendario;
		int thisHour;
		int thisMin;
		int thisSec;
 
		System.out.println("iniciado!");
		this.running = true;
 
		do{
			calendario = Calendar.getInstance();
			thisHour = calendario.get(Calendar.HOUR_OF_DAY);
			thisMin = calendario.get(Calendar.MINUTE);
			thisSec = calendario.get(Calendar.SECOND); 
			try {
				Thread.sleep(1000);
			} catch (InterruptedException e) {
				System.out.println("Thread sleep de ChekcHour a fallado");
			}
		}while(copyHour != thisHour || copyMin != thisMin || copySec != thisSec || this.running);
		System.out.println("APAGATE!");
		return null;
	}
 
	public void stopThread() {
		running = false;
	}

public void actionPerformed(ActionEvent evt) {
		CheckTime time = new CheckTime(hour.getSelectedIndex(), min.getSelectedIndex(), sec.getSelectedIndex());
		if(evt.getSource() == programShutdown && isStarted == false){
			System.out.println("iniciado!");
			time.execute();
			isStarted = true;
		} else if(evt.getSource() == cancelShutdown && isStarted == true){
			System.out.println("cancelado!");
			time.stopThread();
			isStarted = false;
		}
 
	}

public void stopThread() {
  running == false;
}

public void stopThread() {
  running = false;
}
 

Hacer {
 
var1
var2
var3

 Las acciones

} (Mientras var1 sea diferente a X o mientras var2 sea diferente a x o mientras var3 sea diferente a X o mientras running sea true)

package pkg_main;
 
import java.util.Calendar;
 
import javax.swing.SwingWorker;
 
public class CLS_CheckTime extends SwingWorker<Object, Object> {
	private int copyHour;
	private int copyMin;
	private int copySec;
	private boolean running;
 
	public CLS_CheckTime(int hour, int min, int sec) {
		copyHour = hour;
		copyMin = min;
		copySec = sec;
	}
 
	protected Object doInBackground() throws Exception {
		Calendar calendario;
 
		int thisHour;
		int thisMin;
		int thisSec;
 
		this.running = true;
 
		System.out.println("iniciado!");
 
		do {
			calendario = Calendar.getInstance();
			thisHour = calendario.get(Calendar.HOUR_OF_DAY);
			thisMin = calendario.get(Calendar.MINUTE);
			thisSec = calendario.get(Calendar.SECOND);
 
			System.out.println("funcionando: " + thisHour + ":" + thisMin + ":" + thisSec);
 
			if (copyHour == thisHour && copyMin == thisMin && copySec == thisSec) {
				 this.running = false;
			}
 
			try {
				Thread.sleep(1000);
			} catch (InterruptedException e) {
				System.out.println("Thread sleep de ChekcHour a fallado");
			}
		} while (this.running);
 
		System.out.println("APAGATE!");
		return null;
	}
 
	public void stopThread() {
		this.running = false;
	}
}