is Gzip File by its content - Java File Path IO

Java examples for File Path IO:Zip File

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Description

is Gzip File by its content

Demo Code


//package com.java2s;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;

import java.util.zip.GZIPInputStream;

public class Main {
    public static void main(String[] argv) throws Exception {
        File f = new File("Main.java");
        System.out.println(isGzip(f));
    }/*from   w ww .ja  va 2s  . c  o  m*/

    public static boolean isGzip(final File f) throws IOException {
        FileInputStream fis;
        boolean returnValue = false;

        fis = new FileInputStream(f);
        try {
            new GZIPInputStream(fis);
            returnValue = true;
        } catch (final IOException io) {
            // If we got here the file is readable but not in GZIP format
            // throw new RuntimeException(io);
        } finally {
            if (fis != null) {
                fis.close();
            }
        }

        return returnValue;
    }
}

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