Java Practicals

Inheritance program 23 - Write a Java program to create an abstract class Instrument with abstract methods play() and tune(). Create subclasses for Glockenspiel and Violin that extend the Instrument class and implement the respective methods to play and tune each instrument.


            //Instrument.java
            abstract class Instrument {
              public abstract void play();
            
              public abstract void tune();
            }
            //Glockenspiel.java
            class Glockenspiel extends Instrument {
              @Override
              public void play() {
                System.out.println("\tGlockenspiel: Playing the notes on the metal bars.");
              }
            
              @Override
              public void tune() {
                System.out.println("\tGlockenspiel: Tuning the metal bars to the correct pitch.");
              }
            }
            //Violin.java
            class Violin extends Instrument {
              @Override
              public void play() {
                System.out.println("\tViolin: Playing the strings with a bow or fingers.");
              }
            
              @Override
              public void tune() {
                System.out.println("\tViolin: Tuning the strings to the correct pitch.");
              }
            }
            //Main.java
            public class Inheritance_23 {
              public static void main(String[] args) {
                Instrument glockenspiel = new Glockenspiel();
                Instrument violin = new Violin();
            
                glockenspiel.play();
                glockenspiel.tune();
            
                violin.play();
                violin.tune();
              }
            }

Output