In Java, there are many ways to read a file, here we show you how to use the simplest and most common-used method – BufferedReader.


package com.mkyong.io;

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

public class BufferedReaderExample {

	public static void main(String[] args) {

		BufferedReader br = null;

		try {

			String sCurrentLine;

			br = new BufferedReader(new FileReader("C:\\testing.txt"));

			while ((sCurrentLine = br.readLine()) != null) {
				System.out.println(sCurrentLine);
			}

		} catch (IOException e) {
			e.printStackTrace();
		} finally {
			try {
				if (br != null)br.close();
			} catch (IOException ex) {
				ex.printStackTrace();
			}
		}

	}
}

See updated example in JDK 7, which use try-with-resources new feature to close file automatically.


package com.mkyong.io;

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

public class BufferedReaderExample {

	public static void main(String[] args) {

		try (BufferedReader br = new BufferedReader(new FileReader("C:\\testing.txt")))
		{

			String sCurrentLine;

			while ((sCurrentLine = br.readLine()) != null) {
				System.out.println(sCurrentLine);
			}

		} catch (IOException e) {
			e.printStackTrace();
		} 

	}
}