如何从文本文件中读取并存储在 Java 中的字符串数组中？
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How to read from text file and store in String array in Java?
提问by NGB
I have a text file textfile.txt which contains data as follows :
我有一个文本文件 textfile.txt ，其中包含如下数据：
A-abc , A-xyz , B-mno , A-ijk , B-pqr
Now, i have to read from this file and store the values in two separate arrays "A"and "B", such that the values with prefix "A-"gets stored in array A and values with prefix "B-" gets stored in array B.
现在，我已经从该文件的读取和所述值存储在两个单独的阵列"A"和"B"，使得与前缀值"A-"被存储在数组A和前缀“B-”的值被存储在阵B.
Also, while storing the data, the prefix needs to be removed i.e. only "abc"needs to be stored in array A.
此外，在存储数据时，需要删除前缀，即只"abc"需要存储在array A.
FileInputStream fstream = new FileInputStream("C:\opt\New_Workspace\Salary.txt");
// use DataInputStream to read binary NOT text
// DataInputStream in = new DataInputStream(fstream);
BufferedReader br = new BufferedReader(new InputStreamReader(fstream));
String strLine;
while ((strLine = br.readLine()) != null) {
String[] arrayLine1= strLine.split(" , ");
for(String s:arrayLine1)
String[] arrayLine2 = s.split(": ");
{
if(s.matches("Basic: "))
{
basic = Double.parseDouble(arrayLine[1]);
}
else if(s.matches("Perc-D ");
{
percD = Double.parseDouble(arrayLine[3]);
}
else if(s.matches("Perc-A: "))
{
percA = Double.parseDouble(arrayLine[5]);
}
}
回答by Scientist
Try something like this :-
尝试这样的事情：-
FileInputStream in = new FileInputStream("file.txt");
BufferedReader br = new BufferedReader(new InputStreamReader(in));
String strLine;
String[] filearray;
filearray = new String[10];
while ((strLine = br.readLine()) != null) {
for (int j = 0; j < myarray.length; j++){
filearray[j] = br.readLine();
}
}
in.close();
回答by mkaminsky
This was written in a hurry, so please pardon any errors:
这是匆忙写的，所以请原谅任何错误：
String aStore = "";
String bStore = "";
String aFinal[];
String bFinal[];
try{
Scanner input = new Scanner(new File("file.txt"));
while(input.hasNextLine()){
String message = input.nextLine();
message = message.replace(" ", "");
String store[] = message.split(",");
for(int a = 0; a < store.length; a++){
if((store[a]).contains("A-"){
String t[] = (store[a]).split("-");
aStore = aStore + "_" + t[1];
}
if((store[a]).contains("B-"){
String t[] = (store[a]).split("-");
bStore = bStore + "_" + t[1];
}
}
aFinal = aStore.split("_");
bFinal = bStore.split("-");
}
input.close();
}
catch(Exception e){}
