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Ian Darwin's assorted Java stuff, assembled as an API.

There is a newer version: 1.8.0

package com.darwinsys.io;

import java.io.BufferedReader;
import java.io.FileReader;
import java.util.Stack;

/**
 * Reverse a file by lines (simple algorithm, keeps file in memory).
 */
public class RevLines {
	public static void main(String[] argv) throws Throwable {
		String line;

		BufferedReader is = new BufferedReader(new FileReader(argv[0]));

		Stack myStack = new Stack();

		// Put it in the stack frontwards
		while ((line = is.readLine()) != null) {
			myStack.push(line);
		}

		// Print the stack backwards
		while (!myStack.empty()) {
			System.out.println(myStack.pop());
		}
	}
}