What is wrong

Question

Scanner in = new Scanner (System.in);
System.out.println("enter your name!: "+"\n !ادخل اسمك: ");
String name =in.next();
System.out.println("enter your birthday"+"\n ادخل تاريخ ميلاديك");
int Bday = in.nextInt();
System.out.println("enter your major: "+"\n ادخل تخصصك");
String major = in.next();
System.out.println("enter the numbers of your courses: "+"\nادخل عدد مقرراتك الدراسيه: ");
int n = in.nextInt();
System.out.println("write your courses this smester: "+"\n اكتب مقررات الدراسه هذا الترم");
String[] courese = new String[n];
for(int i = 1;i<=courese.length;i++){
courese[i+1] = in.next();
}
System.out.println("enter your grades in these courses :"+"\n ادخل درجتك عند كل ماده:");
int sum = 0;
for(int j = 1 ; j<=n ; j++){
int grades = in.nextInt();
sum+=grades;
}
if(sum>300){
System.out.println("you are pas