问题描述
我在使用Java询问Direct Whole名称时遇到问题。
System.out.println("DOCTOR");
System.out.println("Enter ID Number:");
idnumber = scan.next();
System.out.println("Enter Name");
name = scan.next();
System.out.println("Enter Field of Specialization:");
field = scan.next();
System.out.println("ID " + idnumber);
System.out.println("Name " + name);
System.out.println("Specializtion " + field );
当我在下面输入以下信息时：
ID = 100姓名= Brandon Sullano
它给了我这个结果
ID 100
Name Brandon
Specializtion Sullano
我希望Name是动态的，所以我甚至可以输入两个单词怎么做？
提前致谢..
1楼
采用：
name = scan.nextLine();
此外，如果ID号是一个整数，使用nextInt() （确保也将idnumber声明为int而不是string ）
固定代码：
System.out.println("DOCTOR");
System.out.println("Enter ID Number:");
idnumber = scan.nextInt();
scan.nextLine();
System.out.println("Enter Name");
name = scan.nextLine();
System.out.println("Enter Field of Specialization:");
field = scan.nextLine();
System.out.println("ID " + idnumber);
System.out.println("Name " + name);
System.out.println("Specializtion " + field );
使用
next()将在空格之前获取所有输入。nextLine()将在按下return之前获取所有输入。
更多关于Scanner
专业提示：在大多数情况下，您将使用scan.nextLine()而不是scan.next()因此您可能希望养成使用它的习惯。
2楼
试试这段代码：
import java.util.Scanner;
public class DoctorDoctor {
public static void main (String [] args) {
int idnumber;
String name, field;
Scanner sc = new Scanner(System.in);
System.out.println("DOCTOR");
/** Assuming ID number is an integer value */
System.out.print("Enter ID Number: ");
idnumber = sc.nextInt();
sc.nextLine(); // This is important, for clearing the new line character
System.out.print("Enter Name: ");
name = sc.nextLine();
System.out.print("Enter Field of Specialization: ");
field = sc.nextLine();
System.out.println();
System.out.printf("%-15s: %d%n", "ID Number", idnumber);
System.out.printf("%-15s: %s%n", "Name", name);
System.out.printf("%-15s: %s%n", "Specialization", field);
sc.close();
}
}
输入/输出示例：
DOCTOR
Enter ID Number: 100
Enter Name: Brandon
Enter Field of Specialization: Heart Surgeon
ID Number : 100
Name : Brandon
Specialization : Heart Surgeon
3楼
既然你说scan.nextLine() “不起作用”，我建议使用BufferedReader 。
BufferedReader br=new BufferedReader(new InputStreamReader(System.in);
//in your code:
int idnumber = Integer.parseInt(br.readLine());
String name = br.readLine();
String field = br.readLine();
您必须导入java.io.BufferedReader和java.io.InputStreamReader