Comparativo de Ler Arquivo

main.java

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();
			}
		}
 
	}
}

main.py

arquivo = open("C:\\testing.txt")
print arquivo.read()

## a forma mais correta
with open("C:\\testing.txt") as arquivo:
    print arquivo.read()

main.rb

f = File.open("C:\\testing.txt", "r")
f.each_line do |line|
  puts line
end
f.close