英文:
Split full name into first and sur name and then combine code to use with the program
问题
我是一名大一学生，对Java一窍不通，现在我在我的练习中遇到了麻烦。
以下是部分CSV文件内容：
1,Jay Walker,91 Boland Drive,BAGOTVILLE,NSW,24772,Mel Lowe,45 Ocean Drive,MILLERS POINT,NSW,20003,Hugh Manatee,32 Edgecliff Road,REDFERN,NSW,20164,Elizabeth Turner,93 Webb Road,MOUNT HUTTON,NSW,2290
这是我的Client类（具有构造函数）：
public class Client {private int clientID;private String firstName;private String surName;private String street;private String suburb;private String state;private int postcode;// 构造函数public Client(int ID, String fName, String sName, String str, String sb, String sta, int pCode) {clientID = ID;firstName = fName;surName = sName;street = str;suburb = sb;state = sta;postcode = pCode;}
这是我用于创建对象并从CSV文件中读取数据的代码：
File inFile = new File("clients.txt");Scanner inputFile = new Scanner(inFile);String str;String[] tokens;ArrayList<Client> cList = new ArrayList<>();while (inputFile.hasNext()) {str = inputFile.nextLine();tokens = str.split(",");int clientID = Integer.parseInt(tokens[0]);String[] nameTokens = tokens[1].split(" ");String firstName = nameTokens[0];String surName = nameTokens[1];String street = tokens[2];String suburb = tokens[3];String state = tokens[4];int postcode = Integer.parseInt(tokens[5]);Client client = new Client(clientID, firstName, surName, street, suburb, state, postcode);cList.add(client);System.out.println(client + "\n");}
因此，我想以每个客户的格式打印出结果：clientID，firstName，surName，street，suburb，state，postcode。但是在txt文件中只有全名，我不知道如何将其拆分为名字和姓氏。
我也不知道如何将拆分名称的代码与此程序组合起来以匹配。
当我运行上述代码（我没有拆分名称）时，它总是出错并显示错误：“索引6超出长度6”。
由于我必须以特定格式显示结果，因为这是老师的要求，我不能将名字更改为客户名。
英文:
i'm a first year student and I'm a complete beginner to Java, now i am in trouble with my exercises
Here is part of the CSV file:
<!-- language: lang-none -->
1,Jay Walker,91 Boland Drive,BAGOTVILLE,NSW,2477
2,Mel Lowe,45 Ocean Drive,MILLERS POINT,NSW,2000
3,Hugh Manatee,32 Edgecliff Road,REDFERN,NSW,2016
4,Elizabeth Turner,93 Webb Road,MOUNT HUTTON,NSW,2290
This is my Client class (has constructor):
public class Client {private int clientID;private String firstName;private String surName;private String street;private String suburb;private String state;private int postcode;// constructorpublic Client (int ID, String fName, String sName, String str, String sb, String sta, int pCode) {clientID = ID;firstName = fName;surName = sName;street = str;suburb = sb;state = sta;postcode = pCode;}
and this is my code to create object and read data from csv file:
File inFile = new File("clients.txt");Scanner inputFile = new Scanner(inFile);String str;String[] tokens;ArrayList<Client> cList = new ArrayList<> ();while (inputFile.hasNext()) {str = inputFile.nextLine();tokens = str.split(",");int clientID = Integer.parseInt(tokens[0]);String firstName = tokens[1];String surName = tokens[2];String street = tokens[3];String suburb = tokens[4];String state = tokens[5];int postcode = Integer.parseInt(tokens[6]);Client client = new Client(clientID, firstName, surName, street, suburb, state, postcode);cList.add (client);System.out.println(client + "\n");} // end while
So i want to print out the result with the format clientID, firstName, surName, street, suburb, state, postcode perpestively. However in the txt file there are just full names and i dont know how to split it into first name and sur name.
And i also could not know how to combine the code to split the name into this program to match
As i run the code above (which i did not split the name), it always wrong and has error :"index 6 out of bound for length 6".
As i must display the result with the format because it is a requirement from the teacher and i could not change first name and sur name into Client Name
答案1
得分: 0
有2种可能的解决方案（依我所见）：
- 在文件中用逗号（，）将名字和姓氏之间隔开，像这样写客户端：
1,Jay,Walker,91 Boland Drive,BAGOTVILLE,NSW,24772,Mel,Lowe,45 Ocean Drive,MILLERS POINT,NSW,20003,Hugh,Manatee,32 Edgecliff Road,REDFERN,NSW,20164,Elizabeth,Turner,93 Webb Road,MOUNT HUTTON,NSW,2290
- 再次通过空格从数组中拆分字符串，像这样：
File inFile = new File("clients.txt");Scanner inputFile = new Scanner(inFile);String str;String[] tokens;ArrayList<Client> cList = new ArrayList<>();while (inputFile.hasNext()) {str = inputFile.nextLine();tokens = str.split(",");int clientID = Integer.parseInt(tokens[0]);String firstName = tokens[1].split(" ")[0];String surName = tokens[1].split(" ")[1];String street = tokens[2];String suburb = tokens[3];String state = tokens[4];int postcode = Integer.parseInt(tokens[5]);Client client = new Client(clientID, firstName, surName, street, suburb, state, postcode);cList.add(client);System.out.println(client + "\n");} // end while
英文:
There are 2 possible solution (as I can see):
- write the Client in the file with down comma (,) between the first and sur name, like this:
1,Jay,Walker,91 Boland Drive,BAGOTVILLE,NSW,24772,Mel,Lowe,45 Ocean Drive,MILLERS POINT,NSW,20003,Hugh,Manatee,32 Edgecliff Road,REDFERN,NSW,20164,Elizabeth,Turner,93 Webb Road,MOUNT HUTTON,NSW,2290
- split the String from the array again by space, like this:
File inFile = new File("clients.txt");Scanner inputFile = new Scanner(inFile);String str;String[] tokens;ArrayList<Client> cList = new ArrayList<> ();while (inputFile.hasNext()) {str = inputFile.nextLine();tokens = str.split(",");int clientID = Integer.parseInt(tokens[0]);String firstName = tokens[1].split(" ")[0];String surName = tokens[1].split(" ")[1];String street = tokens[2];String suburb = tokens[3];String state = tokens[4];int postcode = Integer.parseInt(tokens[5]);Client client = new Client(clientID, firstName, surName, street, suburb, state, postcode);cList.add (client);System.out.println(client + "\n");} // end while
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