Inheritance | Java: Inheritance means gets the properties from parent. With this child class can access the variables or methods from parent class. Syntax: class child_class extends parent_class . Here is the Code: import java.io.*; class Main { public static void main (String[] args) { A a = new A(1); B b = new B(3); System.out.println(a.getX()); System.out.println(b.getX()); } } class B extends A { public B(int x) { super(x); } } class A { int x; A(int x) { this.x = x; } public int getX() { return this.x; } } Output: 1 3 Here is the Video: