Read File Line by line using BufferedReader

In this section you will learn how to read line by line data from a file using BufferedReader.

In this section, we provide you two examples:

1. Read line by only using BufferedReader

2. Read line by using FileInputStream, DataInputStream, BufferedReader.

What is BufferedReader ?

BufferedReader buffer character to read characters, arrays and lines. It read text from a character-input stream.

You can change the buffer size or can use default size.

What is DataInputStream ?

From reading java data types from a input stream in a machine independent way, we incorporate DataInputStream.

Example

Read line by only using BufferedReader

import java.io.*;

public class BufferedReaderDemo {
public static void main(String[] args) {
try {
BufferedReader br = new BufferedReader(
new FileReader("DevFile.txt"));
String devstr;
while ((devstr = br.readLine()) != null) {
System.out.println(devstr);
}
} catch (IOException e) {
}
}
}

This will produce the following Output :

Welcome To Devmanuals
Here you find the good learning stuff.
As well complete coverage on each topics like java, PHP etc.

Read line by using FileInputStream, DataInputStream, BufferedReader

import java.io.*;

public class BufferedReaderStream{
public static void main(String args[])
{
try{
// Open the file that is the first 
// command line parameter
FileInputStream fstream = new FileInputStream("DevFile.txt");
// Get the object of DataInputStream
DataInputStream in = new DataInputStream(fstream);
BufferedReader br = new BufferedReader(new InputStreamReader(in));
String strLine;
//Read File Line By Line
while ((strLine = br.readLine()) != null) {
// Print the content on the console
System.out.println (strLine);
}
//Close the input stream
in.close();
}catch (Exception e){//Catch exception if any
System.err.println("Error: " + e.getMessage());
}
}
}

This will produce the following output :

Welcome To Devmanuals
Here you find the good learning stuff.
As well complete coverage on each topics like java, PHP etc.

Download Source Code

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