To read a text file, we use FileReader and wrap it in a BufferedReader.
In the below example, we read a file named “FileToRead.txt” which is located in my local system and output the file line by line in my eclipse console.
Sample Program:
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package classOneGeneral;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
public class ReadFromFile {
public static void main(String [] args) throws IOException {
/*FileReader is meant for reading streams of characters.
For reading streams of raw bytes, consider using a FileInputStream.*/
FileReader fileReader = new FileReader(“D:\\FileToRead.txt”);
/*BufferedReader reads text from a character-input stream, buffering characters
so as to provide for the efficient reading of characters, arrays, and lines. */
BufferedReader bufferReader = new BufferedReader(fileReader);
String textfromfile = null; //
// Using while loop to read the file until there are no more lines
while( (textfromfile = bufferReader.readLine()) != null ){
System.out.println(textfromfile);
}
fileReader.close();
// Close the BufferedReader object to prevent memory leak
bufferReader.close();
}
}
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Read More: Java Tutorial