Inheritance
Inheritance is a process of acquiring parent properties and behaviour by a child automatically. Hence you can either reuse or extend parent properties or behaviour in the child class. The main advantage of inheritance is code reusability. Use the keyword extends to inherit from a class.
Type of Inheritance
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Single inheritance
When a child inherits properties from a single parent
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Multiple inheritance
When a child inherits its properties from two or more parents.
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Hierarchical inheritance
When multiple children inherit properties from a parent
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Multilevel inheritance
When a parent properties are inherited by a child which again get interited by another child. For example, B is inherited from A and C is inherited from B.
A -> B -> C
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Hybrid inheritance
Hybrid inheritance is a combination or two or more inheritance types.
Below is an example of single inheritance
class Apple {
protected String brand = "Apple";
public void Features() {
System.out.println("Capacity : 256 GB");
System.out.println("Liquid retina HD Display of 6.1 inches.");
System.out.println("Dual 12MP Ultra Wide and Wide cameras");
}
}
class iPhone extends Apple {
private String model = "iPhone 11";
public static void main(String[] args) {
iPhone myMobile = new iPhone();
System.out.println(myMobile.brand + "'s new realease is " + myMobile.model);
myMobile.Features();
}
}