Java处理压缩文件

import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStreamReader;
import java.util.zip.GZIPInputStream;
import java.util.zip.GZIPOutputStream;


public class MainClass
{
	/**
	 * 将kuka.txt文件通过GZIPOutputStream压缩为test.gz
	 */
	public void compression()
	{
		try
		{
			FileInputStream in=new FileInputStream("c:/kuka.txt");
			GZIPOutputStream out=new GZIPOutputStream(new FileOutputStream("c:/test.gz"));
			System.out.println("c:/kuka.txt---->c:/tets.gz");
			int c;
			while ((c=in.read())!=-1)
			{
				out.write(c);  //写压缩文件
			}
			in.close();
			out.close();
		} catch (Exception e)
		{
			e.printStackTrace();
		}
	}
	/**
	 * 通过GZIPInputStream解压"test.gz"文件,将文件内容显示出来，并恢复为lovekuka.txt
	 */
	public void decompression()
	{
		try
		{
			//首先读取压缩包中的内容，并显示出来
			BufferedReader reader=new BufferedReader(
								  new InputStreamReader(
								  new GZIPInputStream(
								  new FileInputStream("c:/test.gz"))));
			String s;
			while ((s=reader.readLine())!=null)
			{
				System.out.println(s);  //读每一行，并显示出来
			}
			reader.close();
			
			System.out.println("c:/test.gz--->c:/lovekuka.txt");
			GZIPInputStream stream=new GZIPInputStream(new FileInputStream("c:/test.gz"));
			FileOutputStream out=new FileOutputStream("c:/lovekuka.txt");
			int c;
			while((c=stream.read())!=-1)
			{
				out.write(c);
			}
			stream.close();
			out.close();
		} catch (Exception e)
		{
			e.printStackTrace();
		} 
	}	
}