/*	Punters Lounge JAVA programming course
 *	
 *	Lesson72.java
 *
 *	Author	:	Erik Datapunter
 *	Date	:	12/jun/2004
 *
 *	Reading from a file and writing to a file
 *
 */

// import the library with Input Output objects
import java.io.*;

public class Lesson72 {
    public static void main(String[ ] args) throws Exception {

	// create a File object pointing to a physical file
	File FromFile = new File("in-file.txt");
	// create a FileReader object to use to read from the file
	FileReader ReadFile = new FileReader(FromFile);
	
	// create a File object pointing to a physical file
	File ToFile = new File("out-file.txt");
	// create a FileWriter object to use to write to the file
	FileWriter OutFile = new FileWriter(ToFile);
	
	
	// an integer to read each character as a numerical value
	int ReadChar = 0;
	
	// while we have not yet reached the end of the file, read another character
	while ((ReadChar = ReadFile.read()) != -1)
	{
		if ( (ReadChar > 64) & (ReadChar < 89) )
			ReadChar = ReadChar + 32;
			
		else if ( (ReadChar > 96) & (ReadChar < 121) )
			ReadChar = ReadChar - 32;

		
		OutFile.write(ReadChar);
	}
	
	// when the file is read close the stream to the file
	ReadFile.close();
	OutFile.close();

}
}