Program: How to uncompress a file from GZip format?

The below example shows how to uncompress a file from GZip format.

package com.java2novice.zip;

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.zip.GZIPInputStream;

public class MyDecomGzip {

	public void doUnGzipFile(String filePath) {

		GZIPInputStream gis = null;
		FileInputStream fis = null;
		FileOutputStream fos = null;
		try {
			fis = new FileInputStream(filePath);
			gis = new GZIPInputStream(fis);
			fos = new FileOutputStream("C:/test.txt");
			byte[] tmp = new byte[4*1024];
			int size = 0;
			while ((size = gis.read(tmp)) > 0) {
				fos.write(tmp, 0, size);
			}
			fos.flush();
			System.out.println("Done with uncompressng GZip file.");
		} catch (IOException ex) {
			ex.printStackTrace();
		} finally {
			try{
				if(gis != null) gis.close();
				if(fos != null) fos.close();
			} catch(Exception ex){}
		}
	}

	public static void main(String a[]) {

		MyDecomGzip mfg = new MyDecomGzip();
		mfg.doUnGzipFile("C:/myGzip.gzip");
	}
}

Done with uncompressng GZip file.