ReadWrite

/**
 * Class to read inputs from the command line and write to files.
 */
class ReadWrite
{
	/**
	* Reads the input from command line and returns it as a string.
	*/
	public String readStr()
	{
		String str = "";
		try
		{
			BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
			str = in.readLine();
		}
		catch (IOException e)
		{
			System.out.println(e);
 
		}
		return str;
	}
 
	/**
	 * Reads the specified file.
	 */
	public String readFile(String file)
	{
		String data = "";
		try 
		{
			StringBuffer sb = new StringBuffer();
			BufferedReader in = new BufferedReader(new FileReader(file));
			String str;
			while ((str = in.readLine()) != null)
			{
				sb.append((String) str);
			}
			data = sb.toString();
			in.close();
		} 
		catch (IOException e)
		{
			System.out.println(e);
		}
 
		return data;
	}
 
	/**
	 * Writes the specified string to the file specified.
	 * Will overwrite file if same name is specified as an existing file.
	 */
	public void writeFile(String fileName, String contents)
	{
		try
		{
			BufferedWriter out = new BufferedWriter(new FileWriter(fileName));
			out.write(contents.trim());
			out.close();
		}
		catch (IOException e)
		{
			System.out.println(e);
		}
		System.out.println("The File has been written.");
	}
}