Reading a csv file into an array java

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Types of Computer Networks. Classical Synchronization Problem. What are Semaphores? CSV files are used to store information delimited by commas. Each row of the file is used to represent a data record. In this tutorial, we will learn how to read a CSV file and copy its content into an array or list. For this tutorial, we will use a simple CSV file that contains just three records.

The contents of the file are shown below. The BufferedReader class of the java. We will simply read each line of the file by using the readLine method. Then we can split the line using the split method and passing the comma as a delimiter. Note that we cannot use this approach to read more complex CSV files or files in which the comma itself is a value.

For example, consider a CSV file in which the second column is used to store punctuation marks. If we try to read this file, then the following data is stored in the lists. Computer Organization. Discrete Mathematics. Ethical Hacking. Computer Graphics. Software Engineering. Web Technology. Cyber Security. C Programming. Control System. Data Mining. Data Warehouse. Javatpoint Services JavaTpoint offers too many high quality services.

Step 2: Write the following data into the file: Step 3: Now, save the file. Using Notepad Step 1: Open notepad. We have created the following file. Example import java. Syntax public String[] split String regex The method parses a delimiting regular expression. Ignores commas in quoted elements. It is very easy to use out of the box. Here is a basic worfklow: Create a class that has the fields that "match" the columns of csv file. Each row in your csv is an object of that class with properties corresponding to the fields in your csv.

Use the library to get each field and store it in your object in a loop. Community Bot 1 1 1 silver badge. Minjun Yu Minjun Yu 3, 4 4 gold badges 21 21 silver badges 37 37 bronze badges. To quote: Excel file format using a comma as the value delimiter. Note that the actual value delimiter used by Excel is locale dependent… — Basil Bourque. To parse csv file into an array use this following code. Anvesh Reddy Anvesh Reddy 1. Welcome to StackOverflow!

It would be helpful to other people if you could add comments in the code to explain what it does. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. The Overflow Blog. Learn more. Asked 6 years, 3 months ago.

Active 8 months ago. Viewed 21k times. Bacteria 8, 10 10 gold badges 48 48 silver badges 63 63 bronze badges. Mvz Mvz 2 2 gold badges 11 11 silver badges 23 23 bronze badges. Add a comment. Active Oldest Votes. Simply get the element from the array array[row][column]. Remember arrays start at index 0. Stevoisiak Channa Jayamuni Channa Jayamuni 1, 1 1 gold badge 16 16 silver badges 29 29 bronze badges.