Java MyEclipse中 Scanner input=new Scanner(System.in);显示出错

Question

 package JAVA2;public class java示例3 { public static void main(String[] args) {  Scanner input=new Scanner(System.in);  System.out.print("STB的成绩是；");  int stb=input.nextInt();  System.out.print("JAVA的成绩是；");  int java=input.nextInt();  System.out.print("SQL的成绩是；");  int sql=input.nextInt();  int diffen;  double avg;  System.out.println("-----------------------");  System.out.println("STB\tJAVA\tSQL");  System.out.println(stb+"\t"+java+"\t"+sql);  System.out.println("-----------------------");  diffen=java-sql;  System.out.println("JAVA和SQL的成绩差："+diffen);  avg=(stb+java+sql)/3;  System.out.println("3门课程的平均分是；"+avg);   }}     Scanner input=new Scanner(System.in);这行显示出错？

Answer 1

Scanner没导包吧