我正在进行编程分配,基本上我需要从txt文件中读取并对不同数组中的所有内容进行排序,这样我就可以整齐地显示cmd提示中的所有内容,并能够删除内容。
h Vito 123
d Michael 234 Heart
s Vincent 345 Brain Y
n Sonny 456 6
a Luca 567 Business
r Tom 678 Talking Y
j Anthony 789 Maintenance N
d Nicos 891 Bone
n Vicky 911 7
第一栏需要是employeeRole(员工,医生)。第二列是employeeName。第三列是employeeNumber,其中一些列有第四列(如果它是一个数字,它是患者的数量.Y用于扫描或接听电话)
所以我的思考过程将每一列放入它自己的数组中,然后以这种方式写出来。我能够使用
将每一行放入自己的数组中public class ReadingFile {
// String test;
// char[] employeeRole = new char[9];
String[] employeeRole = new String[9];
String[] employeeName = new String[9], specialty;
String[] wholeLine = new String[9];
// String word;
int[] employeeNum = new int[9];
int r, n, l, num;
public void Reader()
{
Scanner inputStream = null;
Scanner inputStream2 = null;
Scanner inputStream4 = null;
try
{
BufferedReader inputStream3 =
new BufferedReader(new FileReader("data.txt"));
inputStream = new Scanner(new FileInputStream("data.txt"));
inputStream =
new Scanner(new FileInputStream("data.txt"));
inputStream2 =
new Scanner(new FileInputStream("data.txt"));
inputStream4 =
new Scanner(new FileInputStream("data.txt"));
System.out.println("Yeah");
}
catch(FileNotFoundException e){
System.out.println("File Not found");
System.exit(1);
}
for (l=0; l<9; l++)
{
wholeLine[l] = inputStream2.nextLine();
System.out.println(wholeLine[l]);
}
但我无法弄清楚该怎么做。然后进行拆分会将数组放入数组中?这意味着我会将每一行放入一个数组,然后将每个单词放入一个数组中?
所以我尝试了其他的东西,长度不等于1的任何东西都是employeeNum,但那时他们就有N和Y以及专利数量。
for(r=0; r<9; r++) //role
{
String next = inputStream4.next();
while( next.length() != 1)
{
next = inputStream4.next();
}
employeeRole[r] = next;
System.out.println(employeeRole[r]);
}
我也试过
for (r=0; r<9; r++)
{
employeeRole[r] = wholeLine[r].substring(wholeLine[r].indexOf(1));
//inputStream.nextLine();
System.out.println(employeeRole[r]);
}
我只是不确定我是否正确的方式呢?如果我让它变得比实际更困难?或者,如果有更简单的方法来做到这一点。但是一切都完成后,输出应该能够基本上说
Doctors: 2
Name: Michael Employee Number: 234 Specialty: Heart
Name: Nicos Employee Number: 891 Specialty: Bone
非常感谢任何帮助,谢谢!
答案 0 :(得分:6)
你不必打开4个流来读取文件(我想你想打开“每列一个”但你不应该这样做)。
其次,你可以在空格(“”)上拆分字符串,它将为你提供完全符合你想要的列(对于每一行)。
代码示例:
BufferedReader br = null;
String[] characters = new String[1024];//just an example - you have to initialize it to be big enough to hold all the lines!
try {
String sCurrentLine;
br = new BufferedReader(new FileReader("data.txt"));
int i=0;
while ((sCurrentLine = br.readLine()) != null) {
String[] arr = sCurrentLine.split(" ");
//for the first line it'll print
System.out.println("arr[0] = " + arr[0]); // h
System.out.println("arr[1] = " + arr[1]); // Vito
System.out.println("arr[2] = " + arr[2]); // 123
if(arr.length == 4){
System.out.println("arr[3] = " + arr[3]);
}
//Now if you want to enter them into separate arrays
characters[i] = arr[0];
// and you can do the same with
// names[1] = arr[1]
//etc
i++;
}
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
if (br != null)br.close();
} catch (IOException ex) {
ex.printStackTrace();
}
}