import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
File arc = new File("C:\\Temp\\t.txt");
FileReader fr = new FileReader(arc);
BufferedReader br = new BufferedReader(fr);
while (br.ready()) {
System.out.println(br.readLine()); // linha a linha
}