By GokiSoft.com| 10:11 09/09/2021|
Java Advanced

Bài tập nén File & giải nén File & Liệt kê files trong 1 thư mục - winrar - winzip

Bài 1 :

Tìm 1 file text có kích cỡ lớn sau đó nén dữ liệu vào 1 file khác đặt tên là : vidu.data & Viết giải thuật giải nén file.

Bài 2:

Liệt kê tất cả các file trong 1 thư mục -> Vẽ cấu trúc cây folder

Ví dụ: Nhập vào folder tên là ABC -> Kết quả sẽ như sau

ABC

-- a.txt

-- b.txt

-- AB

---- bb.txt

---- BB

------ cc.png

------ dd.jpg

-- k.doc

Tags:



Phản hồi từ học viên

5

(Dựa trên đánh giá ngày hôm nay)

Vũ Việt Đức [C1907L]
Vũ Việt Đức

2020-04-29 13:51:52



/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package lession4;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
import java.util.zip.DeflaterOutputStream;

/**
 *
 * @author ADMIN
 */
public class Bai1 {
    public static void main(String[] args) {
        FileInputStream fis = null;
        DeflaterOutputStream dos = null;
        FileOutputStream fos = null;
        
        try {
            fis = new FileInputStream("vidu.txt");
            fos = new FileOutputStream("vidu.zip");
            dos = new DeflaterOutputStream(fos);
            
            int code;
            while((code = fis.read()) != -1){
                dos.write(code);
            }
        } catch (FileNotFoundException ex) {
            Logger.getLogger(Bai1.class.getName()).log(Level.SEVERE, null, ex);
        } catch (IOException ex) {
            Logger.getLogger(Bai1.class.getName()).log(Level.SEVERE, null, ex);
        } finally {
            if(fis != null){
                try {
                    fis.close();
                } catch (IOException ex) {
                    Logger.getLogger(Bai1.class.getName()).log(Level.SEVERE, null, ex);
                }
            }
            if(fos != null){
                try {
                    fos.close();
                } catch (IOException ex) {
                    Logger.getLogger(Bai1.class.getName()).log(Level.SEVERE, null, ex);
                }
            }
        }
    }
}


Phạm Ngọc Minh [T1907A]
Phạm Ngọc Minh

2020-04-15 07:08:26



package Bt;

import java.io.File;

public class b2 {
    public static void main(String[] args) {
      File file = new File("d:/Java2");
      String[] fileList = file.list();
      
         for (int i=0; i< fileList.length; i++) {
            System.out.println(fileList[i]);
         }
      
   }
}



package Bt;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.zip.InflaterInputStream;


public class Inflater {
    public static void main(String[] args) throws FileNotFoundException, IOException {
        FileInputStream fis = new FileInputStream("d:/Java2/Test.def");
        
        InflaterInputStream iis = new InflaterInputStream(fis);
        
        FileOutputStream fos = new FileOutputStream("d:/Java2/Test1.txt");
        int code;
        while ((code = iis.read()) != -1 ) {            
            fos.write(code);
        }
        
    }
}



package Bt;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.zip.DeflaterInputStream;


public class Deflater {
    public static void main(String[] args) throws FileNotFoundException, IOException {
        DeflaterInputStream dis;
        FileOutputStream fos;
        try (FileInputStream fis = new FileInputStream("d:/Java2/Test.txt")) {
            dis = new DeflaterInputStream(fis);
            fos = new FileOutputStream("d:/Java2/Test.def");
            int code ;
            while ((code = dis.read()) != -1) {
                fos.write(code);
            }
        }
        dis.close();
        fos.close();
        System.out.println(" End deflater !!! >>>>");
        
        
    }
    
}


thienphu [T1907A]
thienphu

2020-03-26 11:39:55



/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package BufferReader;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.zip.DeflaterInputStream;

/**
 *
 * @author Thien Phu
 */
public class ChuyendataSangFile {

    public static void main(String[] args) throws FileNotFoundException, IOException {
        String filename = "D:\\baitapjava\\BT1\\src\\BufferReader\\student.txt";
        
        FileInputStream fis = new FileInputStream(filename);
        
        DeflaterInputStream dis = new DeflaterInputStream(fis);
       
        String newfile = "D:\\baitapjava\\BT1\\src\\BufferReader\\student2.def";
        FileOutputStream fos = new FileOutputStream(newfile);
      
        int code;
        while ((code = dis.read()) != -1) {
            fos.write(code);
        }
        fos.close();
        dis.close();
        fis.close();
        System.out.println("Finish chuyen file");
    }
}


thienphu [T1907A]
thienphu

2020-03-26 11:34:44



/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package BTVeFile;

import java.io.File;

/**
 *
 * @author Thien Phu
 */
public class ShowFile {

    public static void main(String[] args) {

        String folder = "D:\\baitapjava";
        File file = new File(folder);
        //in ten folder ra man hinh
        System.out.println(file.getAbsoluteFile());
        
        File[] children = file.listFiles();
        System.out.println("Danh sach cac file trong thu muc \n");
        
        for (File children1 : children) {
            System.out.println(children1);
        }

    }
}


Đỗ Văn Huấn [T1907A]
Đỗ Văn Huấn

2020-03-26 03:53:11



package java2_Advanced.BaiTapNgay25_3_2020.GiaiNen_File.Bai1;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.zip.DeflaterInputStream;
import java.util.zip.InflaterInputStream;

public class ZipFile {
    public static void main(String[] args) throws IOException {
        deflaterFile();
        intlaterFile();
    }

    static void deflaterFile() throws IOException {
        FileInputStream fis = new FileInputStream("D://FPT.txt");
        DeflaterInputStream dis = new DeflaterInputStream(fis);
        FileOutputStream fos = new FileOutputStream("d:/vidu.data");

        int a;
        while ((a = dis.read()) != -1) {
            fos.write(a);
        }

        fis.close();
        dis.close();
        fos.close();

        System.out.println("Nen file ket thuc.");
    }

    static void intlaterFile() throws IOException {
        FileInputStream fis = new FileInputStream("d:/vidu.data");
        InflaterInputStream iis = new InflaterInputStream(fis);
        FileOutputStream fos = new FileOutputStream("D://FPT.txt");

        int a;
        while ((a = iis.read()) != -1) {
            fos.write(a);
        }

        fis.close();
        iis.close();
        fos.close();

        System.out.println("Giai nen file ket thuc.");
    }
}


Minh Nghia [T1907A]
Minh Nghia

2020-03-25 14:15:26



/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package FileNen;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.zip.DeflaterInputStream;

/**
 *
 * @author Administrator
 */
public class Bai1 {
    public static void main(String[] args) throws FileNotFoundException, IOException {
        String filename = "message.txt";
        FileInputStream fis = new FileInputStream(filename);
        
        DeflaterInputStream dis = new DeflaterInputStream(fis);
        
        String zipFileName = "vidu.data";
        
        FileOutputStream fos = new FileOutputStream(zipFileName);
        
        int code;
        while((code = dis.read()) != -1){
            fos.write(code);
        }
        fos.close();
        dis.close();
        fis.close();
        System.out.println("Ket thua qua trinh nen file");
    }
}




/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package FileNen;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.zip.InflaterInputStream;

/**
 *
 * @author Administrator
 */
public class Bai1b {
    
     public static void main(String[] args) throws FileNotFoundException, IOException {
        String filename = "vidu.data";
        FileInputStream fis = new FileInputStream(filename);
        InflaterInputStream iis = new InflaterInputStream(fis);
        FileOutputStream fos = new FileOutputStream("message2.txt");

        int code;
        while ((code = iis.read()) != -1) {
            fos.write(code);
        }
        fis.close();
        iis.close();
        fos.close();
        System.out.println("Ket thuc qua trinh giai nen file");
    }
}




/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package FileNen;

import java.io.File;

/**
 *
 * @author Administrator
 */
public class Files {
    
    public static void main(String[] args) {
        File listed = new File("C:\\Users\\Administrator\\Documents\\NetBeansProjects\\Java2");
        
        System.out.println("Danh sach file:");
        String[] file = listed.list();
        for (String n : file) {
            System.out.println(n);
        }
    }     
}


Trương Công Vinh [T1907A]
Trương Công Vinh

2020-03-25 09:57:29



/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package Tese;

import java.io.File;

/**
 *
 * @author DELL
 */
public class b2 {
    public static void main(String[] args) {
      File file = new File("d:/Java2");
      String[] fileList = file.list();
      
         for (int i=0; i< fileList.length; i++) {
            System.out.println(fileList[i]);
         }
      
   }
}




/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package Tese;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.zip.InflaterInputStream;

/**
 *
 * @author DELL
 */
public class Inflater {
    public static void main(String[] args) throws FileNotFoundException, IOException {
        FileInputStream fis = new FileInputStream("d:/Java2/Test.def");
        
        InflaterInputStream iis = new InflaterInputStream(fis);
        
        FileOutputStream fos = new FileOutputStream("d:/Java2/Test1.txt");
        int code;
        while ((code = iis.read()) != -1 ) {            
            fos.write(code);
        }
        
    }
}




/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package Tese;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.zip.DeflaterInputStream;

/**
 *
 * @author DELL
 */
public class Deflater {
    public static void main(String[] args) throws FileNotFoundException, IOException {
        DeflaterInputStream dis;
        FileOutputStream fos;
        try (FileInputStream fis = new FileInputStream("d:/Java2/Test.txt")) {
            dis = new DeflaterInputStream(fis);
            fos = new FileOutputStream("d:/Java2/Test.def");
            int code ;
            while ((code = dis.read()) != -1) {
                fos.write(code);
            }
        }
        dis.close();
        fos.close();
        System.out.println(" End deflater !!! >>>>");
        
        
    }
    
}


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