package comz;

import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.RandomAccessFile;

public class FromEndRF {
	public static void read(String filename) {
		read(filename, "GBK");
	}

	public static void read(String filename, String charset) {
		RandomAccessFile rf = null;
		try {
			rf = new RandomAccessFile(filename, "r");
			long len = rf.length();
			long start = rf.getFilePointer();
			long nextend = start + len - 1;
			String line;
			rf.seek(nextend);
			int c = -1;
			while (nextend > start) {
				c = rf.read();
				if (c == '\n' || c == '\r') {
					line = rf.readLine();
					if (line != null) {
						System.out.println(new String(line
						        .getBytes("ISO-8859-1"), charset));
					} else {
						System.out.println(line);
					}
					nextend--;
				}
				nextend--;
				rf.seek(nextend);
				if (nextend == 0) {// 當檔案指標退至檔案開始處，輸出第一行
					line = rf.readLine();
					System.out.println(new String(line.getBytes("ISO-8859-1"),
					        charset));
				}
			}
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		} finally {
			try {
				if (rf != null)
					rf.close();
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
	}

	public static void main(String args[]) {
		read("d:\\2.txt", "gbk");
	}
}
 

借用了老紫竹的程式碼。