Take a Number and printing Table for that Number in java

Problem:

Take a NUmber and printing Table for that Number in java

Code:

import java.util.Scanner;
class Number
{
public static void main(String args[])
{
int a,i=0,b=0;
System.out.println("Enter a number to print table");
Scanner s=new Scanner(System.in);
a=Integer.parseInt(s.nextLine());
for(i=1;i<=20;i++)
{
b=a*i;
System.out.println(a+"*"+i+"="+b);
}
}
}