请完成下列Java程序：读取自己的源文件并把它压缩成GZIP文件。

注意：请勿改动main()主方法和其他已有语句内容，仅在下划线处填入适当的语句。

import java.io.*;

import java.util.zip.*;

public class exl6 2 {

public static void main{String[] arg) {

ex16_2 obj16_2 = new ex16_2();

obj16_2.doZip("ex16_2.java","ex16_2.gzip")

}

public void doZip(String strIn,String strOut

FileInputStream in;

FileOutputStream out;

GZIPOutputStream gzip;

int nFileLength;

byte[] barray = new byte[10];

try {

in = new FileInputStream(strIn);

out = new FileOutputStream(strOut);

gzip = new GZIPOutputStream(out);

while((nFileLength = in.read(barray, 0 barray.length)) ＞ 0)

_____________________;

______________________;

gzip.close();

} catch(Exception e) {

e.printStackTrace();

}

}

}