Lambda Expression examples: Java 7 MapFileParser:

gistfile1.java

	public void readMapFile(MapProcessor processor) throws IOException 
	{
		try (BufferedReader reader = new BufferedReader(new FileReader(filename))) 
		{
			String line = reader.readLine();
			while (line != null)
			{
				Map<String, String> map = parseLineIntoMap(line);
				processor.process(map);
				line = reader.readLine();
			}
		}
	}