Datos de la tienda Java
//Open a file
File properties = new File("properties.txt");
//Writing
Properties p = new Properties();
p.setProperty("johndoe.pin", "12345");
p.store(new FileOutputStream(properties), null);
//Reading
Properties p = new Properties();
p.load(new FileInputStream("properties.txt", "");
p.getProperty("johndoe.pin"); //Returns the value if presents, otherwise null
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