Find Parent ConstructorIn the given code, the statement ‘super()’ in the Shape class constructor will execute the constructor for which class?class Shape { public Shape() { super(); System.out.println("inside Shape class default constructor"); }}class Rectangle extends Shape { public Rectangle() { super(); System.out.println("inside Rectangle class default constructor"); }}class Square extends Rectangle { public Square() { super(); System.out.println("inside Square class default constructor"); }}public class ConstructorChain { public static void main(String[] args) { Square sq = new Square(); }}
Question
Find Parent ConstructorIn the given code, the statement ‘super()’ in the Shape class constructor will execute the constructor for which class?class Shape { public Shape() { super(); System.out.println("inside Shape class default constructor"); }}class Rectangle extends Shape { public Rectangle() { super(); System.out.println("inside Rectangle class default constructor"); }}class Square extends Rectangle { public Square() { super(); System.out.println("inside Square class default constructor"); }}public class ConstructorChain { public static void main(String[] args) { Square sq = new Square(); }}
Solution
In the given Java code, the super() statement in the Shape class constructor will execute the constructor of the class that Shape directly extends. In this case, Shape does not explicitly extend any class, so it implicitly extends the Object class, which is the root of the class hierarchy in Java. Therefore, the super() statement in the Shape class constructor will execute the constructor of the Object class.
Similar Questions
Find OutputType the correct output for the code given below. Also, explain the reason behind your answer.class Shape { public Shape() { System.out.println("inside Shape class default constructor"); }}class Rectangle extends Shape { public Rectangle() { System.out.println("inside Rectangle class default constructor"); }}class Square extends Rectangle { public Square() { System.out.println("inside Square class default constructor"); }}public class ConstructorChain { public static void main(String[] args) { Square sq = new Square(); }}
Select the correct answerThe super() method is used to:OptionsCall constructor of friend classCall constructor of the parent classCall constructorIs a declared method
Super keyword in java is used toSelect one:Refer immediate parent class instance variables.Invoke immediate parent class methods.Invoke immediate parent class constructor.All
public abstract class Shape { private int x; private int y; public abstract void draw(); public void setAnchor(int x, int y) { this.x = x; this.y = y; }} Which two classes use the Shape class correctly? (Choose two.)Select one or more:a.public class Circle implements Shape { private int radius;}b.public class Circle extends Shape { private int radius; public void draw();}c.public abstract class Circle extends Shape { private int radius;}d.public class Circle extends Shape { private int radius; public void draw() {/* code here */}}
How to implement constructor chaining from base class.Options: Pick one correct answer from belowUsing this()Using super()BothNone of the above
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.