java 文件压缩

java中提供了与压缩解压缩相关的类java.util.zip,包含如下数据流：
public class DeflaterOuputStream extends FilterOutpuStream
public class InflaterInputStream extends FilterInputStream
public class GZIPOutputStream extends FilterOutputStream
public class GZIPInputStream extends FilterInputStream
public class ZipOutputStream extends FilterOutputStream
public class ZipInputStream extends FilterInputStream
使用GZIP和ZIP处理压缩的实例如下：

GZIPInputStream,可以使用read(),skip(),available() 方法从gzin 中读取解压数据。
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FileInputStream fin = new FileInputStream("filein.gz");
GZIPInputStream gzin = new GZIPInputStream(fin);
FileOutputStream fout = new FileOutputStream("fileout.txt");

ZipOutputStream,使用ZipEntry对象对zip文件中每个文件进行维护。
=========
FileInputStream fin = new FileInputStream("filein.zip");
ZipInputStream zin = new ZipInputStream(fin);
ZipEntry ze = null;
while ((ze = zin.getNextEntry()) != null) {
FileOutputStream fout = new FileOutputStream(ze.getName());
}

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转载于:http://blog.itpub.net/23937368/viewspace-1057579/