javac lang_07.java

java -cp . lang_07

import java.io.*;
import java.util.*;

public class lang_07 {
	public static void main(String[] args) {

		String strEnv = System.getenv("PATH");

		String[] result = strEnv.split(";");

		Arrays.sort( result );

		try {
			PrintWriter outText = new PrintWriter(
				new BufferedWriter(
					new FileWriter( "result.txt" )
				)
			);

			for (int i = 0; i < result.length; i++) {
				outText.println( result[i] );
			}

			outText.close();

		}
		catch ( Exception e ) {
			System.err.println(e.getMessage());
		}
	}
}