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How to select only .txt file to be zipped using java?
2 Answer(s)      3 years and 5 months ago
Posted in : Java Beginners


Hello,

i'm trying to zipp .txt files from a folder but i want to know how to select only .txt file. I try my code but it's not working, could any one help me please.

[CODE] here is the code: import java.util.*; import java.util.zip.*; import java.io.*;

public class ZipFile { public static void main(String[] args) {

ZipOutputStream out = null;
InputStream in = null;
try {
    File inputFile1 = new File("c:\\Target\\target.txt");// here i want to say only the directroy where .txt files are stored
    File outputFile = new File("c:\\Target\\Archive_target.zip");//here i want to put zipped file in a different directory

File Dir = new File("c:/Target"); FilenameFilter filter = new FilenameFilter() { public boolean accept(File dir, String name) { return !name.startsWith(".txt"); } }; String[] children = Dir.list(filter);

    OutputStream rawOut = new BufferedOutputStream(new FileOutputStream(outputFile));
    out = new ZipOutputStream(rawOut);

    InputStream rawIn = new FileInputStream(inputFile1);
    in = new BufferedInputStream(rawIn);


    ZipEntry entry = new ZipEntry("c:\\Target\\target.txt");
    out.putNextEntry(entry);
    byte[] buf = new byte[2048];
    int len;
    while ((len = in.read(buf)) > 0) {
        out.write(buf, 0, len);
    }
}
catch(IOException e) {
    e.printStackTrace();
}
finally {
    try {
        if(in != null) {
            in.close();
        }
        if(out != null) {
            out.close();
        }
    }
    catch(IOException ignored)
            { }
}
}

} [/CODE]

Thank you


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March 1, 2011 at 1:43 PM


Java create zip file

import java.io.*;
import java.util.zip.*;
class OnlyExt implements FilenameFilter{
  String ext;
  public OnlyExt(String ext){
  this.ext="." + ext;
  }
  public boolean accept(File dir,String name){
  return name.endsWith(ext);
  }
}
public class CreateZip{
public static int buffer = 10240;
protected void create(File exefile, File[] listFiles){
try{
byte b[] = new byte[buffer];
FileOutputStream fout = new FileOutputStream(exefile);
ZipOutputStream out = new ZipOutputStream(fout);
for(int i = 0; i < listFiles.length; i++){
if(listFiles[i] == null || !listFiles[i].exists()|| listFiles[i].isDirectory())
System.out.println("Adding " + listFiles[i].getName());
ZipEntry addFiles = new ZipEntry(listFiles[i].getName());
addFiles.setTime(listFiles[i].lastModified());
out.putNextEntry(addFiles);

FileInputStream fin = new FileInputStream(listFiles[i]);
while(true){
int len = fin.read(b, 0, b.length);
if(len <= 0)
break;
out.write(b, 0, len);
}
fin.close();
}
out.close();
fout.close();
System.out.println("Zip File is created successfully.");
} 
catch (Exception ex){}
}
public static void main(String[]args){
CreateZip exe=new CreateZip();
FilenameFilter ff = new OnlyExt("txt");
File folder = new File("c:/");
File[] files = folder.listFiles(ff);
File file=new File("C:/Examples.zip");
exe.create(file, files);
 }
}


March 1, 2011 at 2:13 PM


Thank you very much



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