java找不到符号错误

Question

尽管我编译了 Semester1 类并且它们位于同一个包中，但我遇到了错误

public class Semester2{
 String subjects2[] = {"Arabic 2","Islamic 2","English 2","calculas","java1","manegment","physecs2"};
        double degrees2[] = new double [7];
        int hours2[] = {2,2,2,4,4,2,3};
        double subjectpoint2[] = new double[7];
                String[]estimate2 = new String[7];
                double fullDegree2 = 0;
                int fail2 = 0;  //fail subjects
        public Semester2(){
        }
        public Semester2(double degrees2[],String subjects2[]){
                    for(int i=0;i<7;i++){
                        this .degrees2[i] = degrees2[i];
                        subjectpoint2[i] = degrees2[i] / 25;

                        fullDegree2 = 0;
                        fail2 = 0;
                    } //end of for
       } //end of constructer
                 public double Semester2Method(double degrees2[],String subjects2[],String[]estimate2,double fullDegree2,int fail2,double subjectpoint2[],int hours2[]){
                     for(int i=0;i<7;i++){
                        if ((degrees2[i] > 100)|(degrees2[i] < 0)){
                         System.out.println("this degree is imposible");
                         i--;
                         continue;
                     } //end of if
               if (degrees2[i] < 40)
                 fail2 ++;
               else
                  if (subjectpoint2[i] >= 3.6)
                   estimate2[i]="A+";
                  if (subjectpoint2[i] >= 3.2)
                   estimate2[i] = "A";
                    if (subjectpoint2[i] >= 2.8)
                   estimate2[i] = "B+";
                   if (subjectpoint2[i] >= 2.6)
                   estimate2[i] = "B";
                   if (subjectpoint2[i] >= 2.4)
                   estimate2[i] = "C+";
                   if (subjectpoint2[i] >= 2.0)
                   estimate2[i] = "C";
                   if (subjectpoint2[i] >= 1.6)
                   estimate2[i] = "D";
                   else

                   estimate2[i] = "F";
                  fullDegree2 += subjectpoint2[i] * hours2[i];
                  }//end of for
                 Semester1 [] obj=new Semester1[2];
                  obj[0]=new Semester1();
                  obj[1]=new Semester1(degrees[7],subjects[7]);
                 //Semester1 obj = new Semester1();

                 double avarge = fullDegree2 /19;
                 double cavarge=( fullDegree2 + obj[1].fullDegree )/( 21 + 19 );
                 return cavarge;

             } //end of the method
         } //end of semester2

这是错误 错误:找不到符号

Semester1 [] obj=new Semester1[2];
                 ^

Answer 1

您的 Semester1.java 文件尚未编译，我可以从您的评论中猜测到。您需要首先编译该文件。这将创建 Semester1.class 文件。然后你应该编译Semester2.java。我认为这应该可行。