Subclass

• A subclass B (say) is a class that extends another class A (say). This means that an instance of B has all the fields and methods that an instance of A has, in addition to the ones declared in B.

• Syntax: public class <class name> extends <class name> { declarations of fields and methods }

• Example: public class VIP extends Employee

{private double bonus;

// Constructor: an VIP with name n, salary s, bonus b, and year hired d

public VIP (String n, double s, double b, int d)

{super(n,d);

salary= s;

bonus= b;} }

• Note the use of super to call a constructor of the superclass Employee

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