Seasons, it takes in user input and then decides what "Season" your specified date lands on. *still needs some work*

Seasons.java

/* 
 * This program prints the seasons 
 *
 * @author Angel Rojas
 * Course: COMP B11
 * Created: Sep  25, 2014
 * Source File: Seasons.java
 */
import java.util.Scanner;

public class Seasons {
 public static void main(String[] args) {
   Scanner in = new Scanner(System.in);  	// set up our Input take-in Scanner.
   String season = "Your unchanged season.";	// Edit: This will print if invalid # is passed.

      // user enters month and day
	System.out.println("Please enter Month followed by Day");
	int month = in.nextInt();
	int day = in.nextInt();
	
	// checks month and day!
	   if (month <= 3) {
		season = "Winter";
	} else if (month == 4 || month == 5 || month == 6) {
		season = "Spring";
	} else if (month == 7 || month == 8 || month == 9) {
		season = "Summer";
	} else if (month == 10 || month == 11 || month == 12) {
		season = "Fall";
	}

	if (month % 3 == 0 && day >= 21) {
	 if (season.equals("Winter")) {
		season = "Spring";
	} else if (season.equals("Spring")) {
		season = "Summer";
	} else if (season.equals("Summer")) {
		season = "Fall";
	} else
		season = "Winter";

   }
  System.out.print(season);
  in.close();			// close out our Input reader
 }
}

I see you have String Winter, String Spring, String Summer, String Fall, but these are never used anywhere else in your code. They have not been initialized, so the compiler is going to scream about that and they also violate the java variable naming convention.
Here is my code for the same project if you want to compare
https://gist.github.com/690d17d52c2a2181bee5.git

Here is @ChadH1971's code: https://gist.github.com/ChadH1971/690d17d52c2a2181bee5

Thanks Pat. What did I do wrong? I used the copy url button, but it didn't paste correctly. Should I have used the embed url button?

Oh, you're right! Can't believe i had initialized those and never even used them. MMk thanks for the input guys! Making said changes now.
So why does our String season have to be set to a blank "" str? can you guys maybe explain that. Thanks again (: EDIT: Code is running smoothly :) so much better than when i originally wrote this back in 2014 aha. Thanks guys for all the help, much appreciated!

@ChadH1971 You used the clone URL, which is what you would use if you wanted to copy the Gist to your computer using a Git client. To share the page, just copy the URL from your browser like you would for any other webpage.