Topic: write an application, enter a directory and a file type, display the directory meets all files of that type. Thereafter, the cut one of these files to another directory.
package zuoyeshiyi;
import java.io. *;
import java.util. *;
public class fileDemo {
public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner sca=new Scanner(System.in);
System.out.println ( "Please enter the directory to be displayed");
String str=sca.nextLine();
System.out.println ( "Enter the desired file type filter");
String str1=sca.nextLine();
File f=new File(str);
System.out.println ( "suffix" + str1 + "files have");
x(f,str1);
System.out.println ( "Please enter the need to cut the file");
String str2=sca.nextLine();
System.out.println ( "Please enter the name of the file to cut");
String str3=sca.nextLine();
jianqie (str2, str3);
File file=new File(str2);
file.delete();
}
public static void x(File f,String str1) {
String []arr=f.list(new FilenameFilter() {
public boolean accept(File dir,String name)
{
return name.endsWith (str1); // suffix name is the same
}
});
System.out.println(arr.length);
for(String name:arr) {
System.out.println(name);
}
}
public static void jianqie(String str2,String str3) {
BufferedInputStream bis=null;
BufferedOutputStream bos=null;
try {
bis=new BufferedInputStream(new FileInputStream(str2));
bos=new BufferedOutputStream(new FileOutputStream(str3));
int k=0;
while((k=bis.read())!=-1) {
bos.write(k);
bos.flush();
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace ();
}finally {
try {
bis.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace ();
}
try {
bos.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace ();
}
}
}
}
