生年月日入力し、年齢表示　演算子使用

public class ren05_4
{
public static void main (String[] args) throws IOException
{
BufferedReader br =
new BufferedReader( new InputStreamReader(System.in));
System.out.print("今日の年は？ > ");
int todayYear = Integer.parseInt( br.readLine() );
System.out.print("今日の月は？ > ");
int todayMonth = Integer.parseInt( br.readLine() );
System.out.print("今日の日は？ > ");
int todayDay = Integer.parseInt( br.readLine() );
System.out.print("誕生日の年は？ > ");
int birthYear = Integer.parseInt( br.readLine() );
System.out.print("誕生日の月は？ > ");
int birthMonth = Integer.parseInt( br.readLine() );

System.out.print("誕生日の日は？ > ");
int birthDay = Integer.parseInt( br.readLine() );
int age = todayYear - birthYear;
if( todayMonth < birthMonth
|| ( todayMonth == birthMonth && todayDay < birthDay ) ){
age = age - 1;
}
System.out.println("あなたの年齢は " + age + " 歳です。");
}
}