Java程序错误 - 字符串输入不可用

Question

这是我的代码：

package Class;

import java.util.Scanner;

public class Bicycle 
{    
    public static int units;
    public static int courseNum;
    public static String courseName;

    public Bicycle(int startUnits, int startNum, String startName) 
    {
        units = startUnits;
        courseNum = startNum;
        courseName = startName;
    }

    public static int setUnits(int newValue) 
    {
        units = newValue;
        return units;
    }

    public static int setNum(int newValue)
    {
        courseNum = newValue;
        return courseNum;
    }

    public static String setName(String newValue) 
    {
        courseName = newValue;
        return courseName;
    }

    public class subClass extends Bicycle 
    {
        public int randVariable;

        public subClass(int startUnits, int startNum, String startName) 
        {
            super(startUnits, startNum, startName);
        }   

        public void randVariable(int newValue) 
        {
            randVariable = newValue;
        }   
    }

    public static void main(String args[]) 
    {
        int BaseUnits;
        int BaseCourseNum;
        String BaseCourseName;

        int FinalUnits;
        int FinalCourseNum;
        String FinalCourseName;

        Scanner entries = new Scanner(System.in);

        BaseUnits = entries.nextInt();
        BaseCourseNum = entries.nextInt();
        BaseCourseName = entries.nextLine();

        FinalUnits = setUnits(BaseUnits);
        FinalCourseNum = setNum(BaseCourseNum);
        FinalCourseName = setName(BaseCourseName);

        System.out.printf("The Course ");
        System.out.println(FinalCourseName);
        System.out.printf(" (CIS %d) is worth %d units.", FinalCourseNum, FinalUnits);
    }
}

我尝试做的是获取字符串输入，虽然我使用的代码会执行此操作，但程序实际上从未要求我输入该字符串。

Answer 1

Scanner entries = new Scanner(System.in);

        BaseUnits = entries.nextInt();
        BaseCourseNum = entries.nextInt();
        BaseCourseName = entries.next(); //<--

使用next（）而不是nextLine（）; 请阅读此nextLine以获得进一步说明。

Answer 2

您的代码段正在接受来自用户的输入

扫描仪条目=新扫描仪（System.in）;

    BaseCourseName = entries.nextLine();

您可以将其更改为

    BaseCourseName = entries.nextLine();

或

您也可以从BufferedReader获取输入，如下所示。

BufferedReader br = new BufferedReader（new InputStreamReader（System.in））;

    String line = br.readLine();