filter.java

这是一个用jbuilder2005编写的图书管理系统

package bookmanage;

import javax.swing.filechooser.*;
import java.io.File;

/**
 * <p>Title: 图书管理系统</p>
 *
 * <p>Description: Filter是用来过滤文件的</p>
 *
 * <p>Copyright: Copyright (c) 2006</p>
 *
 * <p>Company: 浙江工业大学信息学院计算机系</p>
 *
 * @author 曾文秋
 * @version 1.0
 */
public class Filter extends FileFilter {
    String str;
    public Filter(String str) {
        this.str="."+str;
    }

    /**
     * Whether the given file is accepted by this filter.
     *
     * @param f File
     * @return boolean
     * @todo Implement this javax.swing.filechooser.FileFilter method
     */
    public boolean accept(File f) {
        if(f.isDirectory()) return true;
        String name=f.getName();
        return name.endsWith(str);
    }

    /**
     * The description of this filter.
     *
     * @return String
     * @todo Implement this javax.swing.filechooser.FileFilter method
     */
    public String getDescription() {
        if(str.equals(".xls"))
           return "Microsoft office Excel (*.xls)";
        return "";
    }
}