errors in compression & release

[Indira Sruga]

This is the program for compression & uncompression using GZIP....


import java.io.*;
import java.util.zip.*;
public class Gzippin {

public static void main(String[] args) {
// TODO code application logic here
String inStr = "Department of Information and Communication Technology";

ByteArrayOutputStream baos = new ByteArrayInputStream();
GZIPOutputStream gos = new GZIPInputStream(baos);


PrintWriter pw=new PrintWriter(gos);
pw.print(inStr);
pw.close();

byte [] bar = baos.toByteArray();
System.out.println (new String(bar));

ByteArrayInputStream bais= new ByteArrayInputStream(bar);
GZIPInputStream gis= new GZIPInputStream(bais);
byte [] buffer= new byte[1024];
if (gis.available() > 0)
gis.read(buffer,0,1024);
System.out.println(new String(buffer));

if (buffer.equals(inStr))
System.out.println("Compressed and Uncompressed strings are EQUAL");
}



}


This gives me two errors when I exected in Net beans IDE...

C:\Documents and Settings\Administrator\JavaApplication2\src\javaapplication2\Gzippin.java:9: cannot find symbol
symbol : constructor ByteArrayInputStream()
location: class java.io.ByteArrayInputStream
ByteArrayOutputStream baos = new ByteArrayInputStream();

C:\Documents and Settings\Administrator\JavaApplication2\src\javaapplication2\Gzippin.java:10: cannot find symbol
symbol : constructor GZIPInputStream(java.io.ByteArrayOutputStream)
location: class java.util.zip.GZIPInputStream
GZIPOutputStream gos = new GZIPInputStream(baos);

Thanks in advance for ur answers....

- I S

[Ernest Friedman-Hill]

Yout got what look like some bad cut-and-paste errors here. You're creating new XXXInputStreams, and assigning them to variables of type XXXOutputStream; in the process, you're using constructors that the InputStream classes don't have. Just look at the error messages carefully, and you'll see the problem.