My graduate college shutdown method when Genetic algorithm program for finding student schedules was shutting down

GAMain.java

...
public static class RunWhenShuttingDown extends Thread {

	public void run() {
		if (perfect.test()) {
			co.println("Shutting down...\n\n\n");
			co.println("solution is here,\n");
			co.println("The end is near,");
			co.println("there is no fear,");
			try {
				Thread.sleep(500);
			} catch (InterruptedException exception) {
			}
			co.println("misssion is done,");
			co.println("we have found the perfect one,");
			co.println("so, bye bye all,");
			try {
				Thread.sleep(200);
			} catch (InterruptedException exception) {
			}
			co.println("I have acchieved my goal.");
			co.newLine();
			co.println("Shutting down...");
			co.newLine();
		} else {
			co.println("\nWhy ?!?!?!? ");
			co.println("i will find it i promise :(");
			co.println("noooooooooooooooo ");
			try {
				Thread.sleep(500);
			} catch (InterruptedException exception) {
			}
			co.println("^_^_^_^_^_^_^_^_^_^_^_^_^___^_^_^__^_^__");
			co.println("aargh, argh, you are killing me, please stop");
			co.println("^_^_^_^___^_____^_______^_______________");
			try {
				Thread.sleep(200);
			} catch (InterruptedException exception) {
			}
			co.println("________________________________________");
		}
	}
}
...