java核心编程之文件过滤类FileFilter和FilenameFilter

本文实例为大家分享了文件过滤类FileFilter和FilenameFilter，供大家参考，具体内容如下

FileFilter

package test;import java.io.File;import java.io.FileFilter;public class FileFilterTest implements FileFilter {      private String extension;    public FileFilterTest(String extension) {    this.extension = extension;  }    @Override  public boolean accept(File pathname) {          if(pathname.isDirectory()){      return false;    }        String name = pathname.getName();    int num = name.lastIndexOf(".");    if(num == -1){      return false;    }    if(name.length()-1 == num){      return false;    } else {          return extension.equals(name.substring(num+1));    }  }      public static void main(String[] args) {        File path = new File("E:\\书籍\\java 编程");    //获得过滤对象    FileFilterTest ft = new FileFilterTest("pdf");        File[] files = path.listFiles(ft);        for (int i = 0; i < files.length; i++) {      System.out.println(files[i].getAbsolutePath());    }       }}