Java difference

Question

Hi I'm just beginner in Java and I don't undestand one thing what's the difference between this two codes:

System.out.println("Write a number: ");
int a = Integer.parseInt(sc.nextLine());

System.out.println("Write a number: ");
int b = sc.nextInt();

Answer 1

In nextLine() if you input number values that it will consider as String. Then it is parsed to Integer and stored in int a

In nextInt() the entered numerical value is considered Int and stored in int b