public class Main
{
	public static void main(String[] args)
	{
		
		String s1, s2;
		
		s1 = "Everybody gets a good grade";
		s2 = s1.replace("a good grade", "an A+");
		
		System.out.println(s1); //Output: Everybody gets a good grade
		System.out.println(s2); //Output: Everybody gets an A+
	}
}