CODEWITHSUNDEEP
java
Drew
Drew

Reputation: 3

Reading a Multi-line text file with different data in each line

I'm attempting to read a text file with Scanner dataFile = new Scanner("FileName.txt"); the text file has lines which are supposed to be read for info on them. I'm using:

while(dataFile.hasNext()){
      String line = dataFile.nextLine();
      ...
}

to loop through the lines. I need to extract a String at the start of the line, an Integer after the String, and a Double after the Integer. They have spaces in-between each part I need to extract so I am willing to \ make a substring search through the line to individually search for the parts in the line.

I am wondering, Is there an easier and quicker method to doing this?

Example contents of text file:

Name 10 39.5
Hello 75 87.3
Coding 23 46.1
World 9 78.3

Upvotes: 0

Views: 91

Answers (2)

Joe F
Joe F

Reputation: 13

substring search？

you may use 

String[] str=line.split(" ");

and then str[0] is the string you find
str[1] is the string of Integer ,you cast it
and the str[2] is the string of Double , cast

Upvotes: 0

Touniouk
Touniouk

Reputation: 375

If they're all the same format, you can split on whitespace.

String str = "Name 10 39.5";
String[] arr = str.split(" ");
String s = arr[0];
int i = Integer.valueOf(arr[1]);
double d = Double.valueOf(arr[2]);

Upvotes: 1

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