JAVA EXAMPLE PROGRAMS

JAVA EXAMPLE PROGRAMS

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How to read file content line by line in java?


Description:

Below example shows how to read file content line by line. To get this, you have to use BufferedReader object. By calling readLine() method you can get file content line by line. readLine() returns one line at each iteration, we have to iterate it till it returns null.


Code:
package com.java2novice.files;

import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;

public class ReadLinesFromFile {

	public static void main(String a[]){
		BufferedReader br = null;
		String strLine = "";
		try {
			br = new BufferedReader( new FileReader("fileName"));
			while( (strLine = br.readLine()) != null){
				System.out.println(strLine);
			}
		} catch (FileNotFoundException e) {
			System.err.println("Unable to find the file: fileName");
		} catch (IOException e) {
			System.err.println("Unable to read the file: fileName");
		}
	}
}
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Java File IO Operations Sample Code Examples

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  6. How to read file content line by line in java?
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  10. How to get file URI reference?
  11. How to store and read objects from a file?
  12. How to create and store property file dynamically?
  13. How to store property file as xml file?
  14. How to get file last modified time?
  15. How to convert byte array to inputstream?
  16. How to convert inputstream to reader or BufferedReader?
  17. How to convert byte array to reader or BufferedReader?
  18. How to set file permissions in java?
  19. How to read a file using BufferedInputStream?
  20. How to create temporary file in java?
  21. How to write or store data into temporary file in java?
  22. How to delete temporary file in java?
  23. How to write string content to a file in java?
  24. How to write byte content to a file in java?
Knowledge Centre
Different types of Access Modifiers
public: Any thing declared as public can be accessed from anywhere.

private: Any thing declared as private can't be seen outside of its class.

protected: Any thing declared as protected can be accessed by classes in the same package and subclasses in the other packages.

default modifier: Can be accessed only to classes in the same package.
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About Author

I'm Nataraja Gootooru, programmer by profession and passionate about technologies. All examples given here are as simple as possible to help beginners. The source code is compiled and tested in my dev environment.

If you come across any mistakes or bugs, please email me to [email protected].

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Reference: Java™ Platform Standard Ed. 7 - API Specification | Java™ Platform Standard Ed. 8 - API Specification | Java is registered trademark of Oracle.
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