Question

该程序的目的是获取用户输入的全名，然后将其分解为他的名字和姓氏（除了做一些额外的事情）。

它应该在空格之间将String拆分成两半，但我只能引用split数组的第一个值，否则我得到：

Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 1
at FirstNameLastName.main(FirstNameLastName.java:41)

这是当前的代码，任何帮助将不胜感激：

import java.util.Scanner;

public class FirstNameLastName {

    public static void main(String[] args) {    
        String fullName; //the users full name as he enters it          
        String fname; //the users first name
        int fnameCount; //number of characters in fname
        String lname; //the users last name;
        int lnameCount; // counts amount of characters in lname
        String init; //initials of the user, combination of first and last name

        Scanner input = new Scanner(System.in);
        System.out.println("Please input your first and last name with a space inbetween them");
        fullName = input.next();

        String[] parts = fullName.split("\\s+"); // creates an array within which the two split String values are stored
        fname = parts [0];  
        lname = parts [1];      
        fnameCount = fname.length();
        lnameCount = lname.length();

        System.out.println(fname);
        System.out.println(lname);      
        System.out.printf("Your first name is %s , which has %d characters" , fname , fnameChar);
        System.out.println();
        System.out.printf("Your last name is %s , which has %d characters" , lname , lnameChar);
        System.out.println();
        System.out.printf("Your initials are %c%c", fname.charAt(0),lname.charAt(0));

    }
}

Answer 1

你的问题是

fullName = input.next();

只读一个单词。你希望它是

fullName = input.nextLine();

将读取整行。

在空格之后拆分字符串然后引用它

1 个答案: