plz explain me this code

Question

import java.util.Scanner;
import java.io.*;
class Scd
{
public static void main(String args[])
{
Scanner sc=new Scanner(System.in);
int rno=sc.nextInt();
float per=sc.nextFloat();
String name=sc.nextLine();
System.out.println("tour details");
System.out.println("name="+name);
System.out.println("rno="+rno);
System.out.println("per="+per);
}
}

Answer 1

import java.util.Scanner;
import java.io.*;
class Scd
{
public static void main(String args[])
{
Scanner sc=new Scanner(System.in);
int rno=sc.nextInt(); //Reads user's input as an integer.
float per=sc.nextFloat(); //Reads as float.
String name=sc.nextLine(); //Reads as a string.
System.out.println("tour details");
//Prints the values.
System.out.println("name="+name);
System.out.println("rno="+rno);
System.out.println("per="+per);
}
}