자바 gz 파일 로 압축

package storm.hadoop;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.zip.GZIPOutputStream;

public class GZIPUtil {   
    
    public static void compressFile(String inFileName) {
        String outFileName = inFileName + ".gz";
        FileInputStream in = null;
        try {
            in = new FileInputStream(new File(inFileName));
        }catch (FileNotFoundException e) {
            System.out.println("Could not find the inFile..."+inFileName);           
        }
        
        GZIPOutputStream out = null;
        try {
            out = new GZIPOutputStream(new FileOutputStream(outFileName));
        }catch (IOException e) {
        	System.out.println("Could not find the outFile..."+outFileName);
            
        }
        byte[] buf = new byte[10240];
        int len = 0;
        try {        	                	
            while (((in.available()>10240)&& (in.read(buf)) > 0)) {  
            	out.write(buf);            	
            }        
            len = in.available();            
            in.read(buf, 0, len);            
            out.write(buf, 0, len);        	        	
            in.close();
            System.out.println("Completing the GZIP file..."+outFileName);
            out.flush();
            out.close();
        }catch (IOException e) {
        	
        }
    }
    
    public static void main(String[] args) {
        String str = "/home/guoqiang.ma/data.log";
        System.out.println(str);
        long start = System.currentTimeMillis();
        compressFile(str);
        long end = System.currentTimeMillis();
        System.out.println("spent "+(end-start)+" ms");
    }
}