Reading in file into a string array

Question

How do I read in a file into a string array using Scanner? The file has a specified number of lines, lets say 100. There are plenty of examples in here using arrayList and BufferedReader but not Scanner or arrays that are already fixed in size.

public String[] array;
Scanner inputStream = null;     
public String line;

public practice(String theFile) {      
    array = new String[100];
    try {         
        inputStream = new Scanner(new FileInputStream(theFile)); 

        while (inputStream.hasNextLine()) {
            for (int i = 0; i < array.length; i++){

                //dont know what to put here         
             }
         }           
     } catch(FileNotFoundException e) {
         System.out.println(e.getMessage());
     }
     inputStream.close();   
}

You don't need to check for has next line because you have a fixed length and a try catch to handle it all. Just use the for loop but not the while loop. — Malik Brahimi
– Malik Brahimi, Commented Mar 25, 2015 at 0:43

Malik Brahimi · Accepted Answer · 2015-03-25 00:45:23Z

2

You don't need to check for has next line because you have a fixed length and a try catch to handle it all. Just use the for loop but not the while loop. From there, it's just all scanner stuff:

for (int i = 0; i < array.length; i++)
{
    array[i] = inputStream.nextLine();        
}

answered Mar 25, 2015 at 0:45

Malik Brahimi

16.8k7 gold badges46 silver badges76 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

code Over a year ago

I see, once I took of my while loop it worked. Thank you very much! Once I reach 15 rep points I make sure to upvote your answer. Thanks again!

ymz · Accepted Answer · 2015-03-25 00:46:29Z

1

int i = 0;

while (inputStream.hasNextLine() && i < array.length())
{
    array[i] = inputStream.nextLine(); 
    i++;
}

answered Mar 25, 2015 at 0:46

ymz

6,9641 gold badge26 silver badges41 bronze badges

2 Comments

ymz Over a year ago

not a problem :) i must say: using a try..catch block as a pettern of not handling common exceptions (such as out of range) is a very bad practice. please use try.. catch ONLY when the effort of trying to map all the posibble exceptions and their solutions is not possible or the resulted code will probably will be too messy

code Over a year ago

Hm, but the reason I used a try and catch was because I kept getting compile errors which were due to exceptions.

Collectives™ on Stack Overflow

Reading in file into a string array

2 Answers 2

1 Comment

2 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

1 Comment

2 Comments

Your Answer

Sign up or log in

Post as a guest

Related