Inheritance & Polymorphism Simple Explanation

childClass.java

class parentClass {
	public void parentMethod(){
		// do general stuff
	}
}

class childClass extends parentClass {
	public void childMethod1() {
		// do child-specific stuff
	}
	public void childMethod2() {
		// do child-specific stuff
	}
	public static void main(String[] args) {
		parentClass parentObject = new parentClass();
		childClass childObject = new childClass();
		parentClass polymorphedObject = new childClass();
	}
}