文件过滤器
import java.io.File;
import java.io.FilenameFilter;
public class Filter implements FilenameFilter{
String extent;
Filter(String extent){
this.extent = extent;
}
@Override
public boolean accept(File dir,String name) {
return name.endsWith("."+extent);
}
}
主程序
import java.io.File;
import java.io.FilenameFilter;
public class HelloWorld {
public static void main(String[]args) {
File dir = new File("./TestDir");
Filter filter = new Filter("mp4");
System.out.println("mp4文件:"+dir);
String files[] = dir.list(filter);
for(String filename : files) {
File f = new File(dir,filename);
if(f.isFile()) {
System.out.println("文件名"+f.getName());
System.out.println("绝对路径"+f.getAbsolutePath());
System.out.println("文件目录"+f.getPath());
} else {
System.out.println("子目录"+f);
}
}
}
}