5.3) Using a method that throws a runtime exception

public class FeelingHungryException extends RuntimeException {
	private static final long serialVersionUID = 1388446834933699295L;
}

import java.time.LocalTime;

public class Trip {
	public void goTrekking(LocalTime startTime) {
		// compare curremt time and start time
		// throw feelhungry exception if diff > 2 hrs
		int hrs = LocalTime.now().getHour() - startTime.getHour();
		if (hrs >= 2) {
			throw new FeelingHungryException();
		}
	}
}

import java.time.LocalTime;

public class TestTrip {
	public static void main(String[] args) {
		Trip trip = new Trip();
		trip.goTrekking(LocalTime.of(11, 24));
	}
}

Output :

public class InvalidArrayAccess {
	public static void main(String[] args) {
		String[] students = { "Shreya", "Joseph" };
		System.out.println(students[5]);
		System.out.println("All seems to be well");
	}
}

Output:

public class InvalidArrayAccess {
	public static void main(String[] args) {
		String[] students = { "Shreya", "Joseph" };
		try {
			System.out.println(students[5]);
		} catch (ArrayIndexOutOfBoundsException e) {
			System.out.println("Exception");
		}
		System.out.println("All seems to be well");
	}
}

Output:

Important Point:

public class InvalidArrayAccess {
	public static void main(String[] args) {
		String[] students = { "Shreya", "Joseph" };
		int pos = 10;
		if (pos > 0 && pos < students.length) {
			System.out.println(students[pos]);
		}
	}
}