我正在尝试使用扫描仪输入学生详细信息,但我不断收到此错误：

error: incompatible types: Scanner cannot be converted to String

我有4个扫描仪

static Scanner name = new Scanner(System.in);

static Scanner Date = new Scanner(System.in);

static Scanner address = new Scanner(System.in);

static Scanner gender = new Scanner(System.in);

我的代码如下

System.out.println("You have chosen to add a student. Please enter the following details");

System.out.println("Name: ");

String Name = name.nextLine();

System.out.println("DOB: ");

String DOB = Date.nextLine();

System.out.println("Address: ");

String Address = address.nextLine();

System.out.println("Gender: ");

String Gender = gender.nextLine();

app.addStudent(name, DOB, address, gender);

System.out.println(Name + " has been added!" + "\n" + "Returning to menu....");

app.delay();

addStudent方法如下

public void addStudent (String name,String DOB,String address,String gender)

{

for(int i = 0; i < enrolment.length; i++)

{

if (enrolment[i] == null)

{

this.enrolment[size] = new Student(name, DOB, address, gender);

this.size++;

if (gender == "Male")

{

this.maleStudents++;

}

else {

this.femaleStudents++;

}

break;

}

}

}

解决方法:

问题是您将Scanner对象传递给addStudent方法而不是从扫描仪获取的字符串：

app.addStudent(name, DOB, address, gender);

应该

app.addStudent(Name, DOB, Address, Gender);

也：

>一个Scanner对象就足够了.不需要四个.

> Java代码约定规定变量名称在较低的驼峰情况下,即性别而不是性别.

将所有内容放在一起,您的代码应如下所示：

Scanner scanner = new Scanner(System.in);

System.out.println("You have chosen to add a student. Please enter the following details");

System.out.println("Name: ");

String name = scanner.nextLine();

System.out.println("DOB: ");

String dob = scanner.nextLine();

System.out.println("Address: ");

String address = scanner.nextLine();

System.out.println("Gender: ");

String gender = scanner.nextLine();

app.addStudent(name, dob, address, gender);

System.out.println(name + " has been added!" + "\n" + "Returning to menu....");

标签：java,arrays,java-util-scanner

来源： https://codeday.me/bug/20190528/1170831.html