方法学生GPA。java:5:错误:'。类的预期错误
当我尝试调用另一个方法时,我一直遇到这个错误。我尝试使用方法重载,因为它需要它。 我知道计算是正确的,我只想得到最终的gpa值,根据它们的值打印出消息
请帮助我,因为我了解如何使用多种方法,我只想调用方法GPA计算器并将其放入主方法中
import java.util.Scanner;
public class StudentGPA {
public static void main(String[] args){
gpaCalculator(double gpa);
double gpa;
if (gpa == 4.0){
System.out.println("Excellent! Congratulations on a great job!");
}
else if ((gpa >= 3.5)&&(gpa < 4.0)){
System.out.println("Great job! Keep up the good work!");
}
else if ((gpa >= 3.0)&&(gpa <3.5)){
System.out.println("Very good job! Make sure you keep it this way(or higher) to easily get to graduate school");
}
else if ((gpa >= 2.0)&&(gpa <3.0)){
System.out.println("Time to put a little more effort not to fall below 2.0 and most importantly to get back to 3.0");
}
else if (gpa < 2.0){
System.out.println("I'm sure you'll get back on track, but please make an appointment with an advisor!");
}
else{
return;
}
}
public static void gpaCalculator(double gpa){
String grade = "";
double credit1;
double credit2;
double credit3;
double credit4;
double gradeValue=0;
double totPtsClass1=0;
double totPtsClass2=0;
double totPtsClass3=0;
double totPtsClass4=0;
double totPts=0;
double totalCredits= 0;
Scanner scrn = new Scanner (System.in);
System.out.println("Please enter the number of credits of the class 1 (A number)");
credit1 = scrn.nextDouble();
System.out.println("Please enter your grades for the class 1(Capital letters such as A,B+, C-)");
grade = scrn.next();
if (grade.equals ("A"))
gradeValue= 4.00;
else if (grade.equals("A-"))
gradeValue= 3.67;
else if (grade.equals("B+"))
gradeValue = 3.33;
else if (grade.equals("B"))
gradeValue = 3.00;
else if (grade.equals ("B-"))
gradeValue = 2.67;
else if (grade.equals("C+"))
gradeValue = 2.33;
else if (grade.equals("C"))
gradeValue = 2.00;
else if (grade.equals ("D+"))
gradeValue = 1.33;
else if (grade.equals ("D"))
gradeValue = 1.00;
else if (grade.equals ("F"))
gradeValue = 0;
else if (grade.equals ("FX"))
gradeValue = 0;
else
System.out.println ("Invalid Grade");
totPtsClass1 = gradeValue * credit1;
System.out.println("Please enter the number of credits of the class 2 (A number)");
credit2 = scrn.nextDouble();
System.out.println("Please enter your grades for the class 2 (Capital letters such as A,B+, C-)");
grade = scrn.next();
if (grade.equals ("A"))
gradeValue= 4.00;
else if (grade.equals("A-"))
gradeValue= 3.67;
else if (grade.equals("B+"))
gradeValue = 3.33;
else if (grade.equals("B"))
gradeValue = 3.00;
else if (grade.equals ("B-"))
gradeValue = 2.67;
else if (grade.equals("C+"))
gradeValue = 2.33;
else if (grade.equals("C"))
gradeValue = 2.00;
else if (grade.equals ("D+"))
gradeValue = 1.33;
else if (grade.equals ("D"))
gradeValue = 1.00;
else if (grade.equals ("F"))
gradeValue = 0;
else if (grade.equals ("FX"))
gradeValue = 0;
else
System.out.println ("Invalid Grade");
totPtsClass2 = gradeValue * credit2;
System.out.println("Please enter the number of credits of the class 3 (A number)");
credit3 = scrn.nextDouble();
System.out.println("Please enter your grades for the class 3 (Capital letters such as A,B+, C-)");
grade = scrn.next();
if (grade.equals ("A"))
gradeValue= 4.00;
else if (grade.equals("A-"))
gradeValue= 3.67;
else if (grade.equals("B+"))
gradeValue = 3.33;
else if (grade.equals("B"))
gradeValue = 3.00;
else if (grade.equals ("B-"))
gradeValue = 2.67;
else if (grade.equals("C+"))
gradeValue = 2.33;
else if (grade.equals("C"))
gradeValue = 2.00;
else if (grade.equals ("D+"))
gradeValue = 1.33;
else if (grade.equals ("D"))
gradeValue = 1.00;
else if (grade.equals ("F"))
gradeValue = 0;
else if (grade.equals ("FX"))
gradeValue = 0;
else
System.out.println ("Invalid Grade");
totPtsClass3 = gradeValue * credit3;
System.out.println("Please enter the number of credits of the class 4 (A number)");
credit4 = scrn.nextDouble();
System.out.println("Please enter your grades for the class 4 (Capital letters such as A,B+, C-)");
grade = scrn.next();
if (grade.equals ("A"))
gradeValue= 4.00;
else if (grade.equals("A-"))
gradeValue= 3.67;
else if (grade.equals("B+"))
gradeValue = 3.33;
else if (grade.equals("B"))
gradeValue = 3.00;
else if (grade.equals ("B-"))
gradeValue = 2.67;
else if (grade.equals("C+"))
gradeValue = 2.33;
else if (grade.equals("C"))
gradeValue = 2.00;
else if (grade.equals ("D+"))
gradeValue = 1.33;
else if (grade.equals ("D"))
gradeValue = 1.00;
else if (grade.equals ("F"))
gradeValue = 0;
else if (grade.equals ("FX"))
gradeValue = 0;
else
System.out.println ("Invalid Grade");
totPtsClass4 = gradeValue * credit4;
totPts= totPtsClass1+totPtsClass2+totPtsClass3+totPtsClass4;
totalCredits = credit1+credit2+credit3+credit4;
gpa= totPts / totalCredits;
return gpa;
}
}
# 1 楼答案
您有许多语法错误,让我们从修复该方法开始。这个
应该是
然后,称之为改变
到