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import java.io.*;

import java.nio.*;

import java.nio.channels.*;

import java.nio.charset.*;

public class Search {

public static void main(String[] args) throws IOException {

if(args.length < 2){

System.out.println("usage: Java Search ");

return;

}

Charset charset = Charset.forName("GB18030");

CharsetDecoder decoder = charset.newDecoder();

// 如果与中文无关，此二句及其后相关语句可刪除

String fileName = System.getProperty("user.dir")

+ System.getProperty("file.separator") + args[0];

try{

FileInputStream fis = new FileInputStream(fileName);

FileChannel fc = fis.getChannel();

int sz = (int)fc.size();

MappedByteBuffer bb = fc.map(FileChannel.MapMode.READ_ONLY, 0, sz);

CharBuffer cb = decoder.decode(bb);

String s = String.valueOf(cb);

int n = s.indexOf(args[1]);

if( n > -1)

System.out.println(args[1]+" --- "+n);

else

System.out.println(args[1]+" --- not found! ");

fc.close();

}

catch(Exception e){System.out.println(e);}

}

}

/*

编译后，在命令行：

java Search FILE WORD

FILE: 要搜索的文件名

WORD：要搜索的单词(字符串)

*/