How to read file in Java – BufferedReader

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

Example:
package com.example.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.example.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();
} 

}

}