Java使用if语句，for循环和方法调用

In main, create a for loop that will ask for the numeric grade and uses the getLetterGrade method to print out the letter grade, until the user enters a -1. so practically i have to ask the user to enter the grade between 0 and 100 and it will look in the method and print the appropriate grade? correct??? so here's the codeIn main, create a for loop that will ask for th