java - 输入扫描仪被跳过

Question

这段代码实际上在 if 语句中(决定它是讲师还是学生，但两者的问题是相同的，输入名称被跳过)讲师a = new Lecturer();

        System.out.print("Please enter your Lecturer Identification Number, Sir : ");
        input.nextLine();
        a.setLect_num(input.nextLine());

        System.out.print("\nPlease insert your Name, Sir : ");
        a.setName(input.nextLine());

        System.out.print("\nPlease enter your Age, Sir : ");
        a.setAge(input.nextInt());

        System.out.print("\nPlese enter the course you are in charge, Sir : ");
        input.nextLine();
        a.setCourse(input.nextLine());

        a.setOccupation("Teacher");
        a.introduction();

Answer 1

在代码片段的第 2 行中，您正在收集来自扫描仪的输入并丢弃它:

System.out.print("Please enter your Lecturer Identification Number, Sir : ");
input.nextLine();  // this line is gathering input and discarding it
a.setLect_num(input.nextLine());