How to read a file in java with example program

• We can read java file using buffered reader class in java
• We need to import java.io.BufferedReader in order to read java text file.
• Create object of java.io.BufferedReader class by passing new FileReader("C:\\Sample.txt") object to the constructor.
• In order to read line by line call readLine() method of BufferedReader class which returns current line. Initially first line of java text file

 Program #1: Write a java program to read a file line by line using BufferedReader class

1. package com.instanceofjava.javareadfile;
2. 
   
3. import java.io.BufferedReader;
4. import java.io.FileReader;
5. import java.io.IOException;
6. 
   
7. public class ReadFileBufferedReader {
8. 
   
9. /**
10. * @Website: www.instanceofjava.com
11. * @category: How to read java read file line by line using buffered reader
12. */
13. 
    
14. public static void main(String[] args) {
15. 
    
16. BufferedReader breader = null;
17. 
    
18.  try {
19. 
    
20. String CurrentLine;
21. 
    
22. breader = new BufferedReader(new FileReader("E://Sample.txt"));
23. 
    
24. while ((CurrentLine = breader.readLine()) != null) {
25. System.out.println(CurrentLine);
26. }
27. 
    
28. } catch (IOException e) {
29. e.printStackTrace();
30. } finally {
31.     try {
32. if (breader != null)
33. breader.close();
34.      } catch (IOException ex) {
35. ex.printStackTrace();
36.      }
37. }
38. 
    
39. }
40. 
    
41. }

 Output:
 

1. Java open and read file
2. Read file line by line in java
3. Example java program to read a file line by line
4. java read file line by line example

  
Program #2: Write a java program to read a file line by line using BufferedReader class using Eclipse