How to create csv file in java using filewriter

• We can create CSV file and fill some data in to it using java program.
• We can create CSV file and write data int to CSV file using java.io.FileWriter class.
• Creating object of java.io.FileWriter class by giving output filename.
• After creating object of java.io.FileWriter append data by calling append("data") method of FileWriter class object.
• Use append('\n'); for enter data in new row.
• Lets see a java example program on how to create csv file and write data in to it using FileWriter Class.

Program #1: Java program to create CSV file using FileWriter class

1. package com.java.createcsvfile;
2. 
   
3. import java.io.FileWriter;
4. import java.io.IOException;
5. 
   
6. public class CreateCsvFile {
7. 
   
8. private static void generateCsvFile(String fileName) {
9. 
   
10.       FileWriter writer = null;
11. 
    
12.  try {
13. 
    
14.      writer = new FileWriter(fileName);
15.      writer.append("Name");
16.      writer.append(',');
17.      writer.append("Number");
18.      writer.append('\n');
19. 
    
20.      writer.append("interview questions");
21.      writer.append(',');
22.      writer.append("001");
23.      writer.append('\n');
24. 
    
25.   writer.append("interview programs");
26.   writer.append(',');
27.   writer.append("002");
28.   writer.append('\n');
29. 
    
30.   System.out.println("CSV file is created...");
31. 
    
32.   } catch (IOException e) {
33.   e.printStackTrace();
34.   } finally {
35.         try {
36.    writer.flush();
37.    writer.close();
38.         } catch (IOException e) {
39.    e.printStackTrace();
40. }
41. }
42. }
43. 
    
44. public static void main(String[] args) {
45. 
    
46. String location = "E:\\newCsvFile.csv";
47. generateCsvFile(location);
48. 
    
49. }
50. 
    
51. }

 Output: