extractor.java

一个用于搜索本地文件内容的小型搜索引擎

package invertedList;


import java.io.File;
import java.lang.String;

/**
 * @author Administrator
 *	abstract class to extract information from afile
 */
abstract public class Extractor {
	/**
	 * @param file
	 * @return String the content of the file
	 * get content of a file
	 */
	abstract public String getInformation(File file);
}