New to Java

I need to create an application that prompts for a number and then sums all odd numbers from 1 to the entered number.

public class OddSum {
	public static void main (String[] args) {
		int num;	// input number
		int OddSum;	// Sum of odd numbers

		Scanner input = new Scanner(System.in);
		System.out.print("Enter a limit number: ");
		num = input.nextInt(); 
		for (int i=0; i<= num; i++)
			System.out.println (" Sum of all Odd numbers within the limit is: ");
		}}

I made that kinda as a skeleton but i dont know how to finish the code or how to use "for" correctly.