JAVA IO流 <二>过滤器

public class filterByName implements FileFilter {

public boolean accept(File pathname) {

return pathname.getName().endsWith(".pdf");
}

}

public class filterByContains implements FileFilter {

public boolean accept(File pathname) {

return pathname.getName().contains("课后");
}

}

import blog_filterByName.filterByContains;
import blog_filterByName.filterByName;

public class File_ListDemo {

public static void main(String[] args) {
File dir = new File("d:\\文件\\");
FileFilter f = new filterByName();              //过滤器 ：按照后缀名过滤
FileFilter f1 = new filterByContains();     //过滤器：按照含有的字段过滤
File[] str = dir.listFiles(f);
for(File s : str)
{
System.out.println(s +".........."+ s.length());
}
File[] str1 = dir.listFiles(f1);
for(File s : str1)
{
System.out.println(s +".........."+ s.length());
}

}

}