Nowshad Hasan nowshad-hasan

VSCode Shortcuts

List of helpful shortcuts for faster coding

If you have any other helpful shortcuts, feel free to add in the comments of this gist :)

	static void printBookOld(Book book) {
	if (book instanceof Thriller) {
	Thriller thriller = (Thriller) book; // must-do explicit casting
	System.out.println(thriller.getSuspense());
	} else if (book instanceof AutoBiography) {
	AutoBiography biography = (AutoBiography) book; // must-do explicit casting
	System.out.println(biography.getContribution());
	}
	}

	public class OldStudent{

	private String name;
	private int age;

	public OldStudent(String name, int age) {
	this.name = name;
	this.age = age;
	}

	private static int getDayExpense2(WeekDay day) {
	return switch (day) {
	case SUNDAY, MONDAY, TUESDAY, WEDNESDAY, THURSDAY -> 100;
	// case FRIDAY -> 200; // without using 'default', this line creates compile error
	// case FRIDAY, SATURDAY -> 200 // valid
	default -> 200; // valid
	};
	}

	// We must use 'default' if we have int, String etc. common parameter type.

	private static void getDayStatus(WeekDay day) {
	switch (day) {
	case SUNDAY, MONDAY, TUESDAY, WEDNESDAY, THURSDAY -> System.out.println("On day");
	case FRIDAY, SATURDAY -> System.out.println("Off day");
	}
	}

	private static void getDayStatus(WeekDay day) {
	switch(day) {
	case SUNDAY:
	case MONDAY:
	case TUESDAY:
	case WEDNESDAY:
	case THURSDAY:
	System.out.println("On day");
	break;
	case FRIDAY:

	public class PolymorphicMethodOverloading {

	public static void main(String[] args) {
	Consumer consumer = new Consumer();
	Parent p1 = new Parent();
	Parent p2 = new Child1();
	Parent p3 = new Child2();
	Child1 p4 = new Child1();
	Child2 p5 = new Child2();