Java.util.zip.DeflaterInputStream klass i Java Den här klassen implementerar ett utströmsfilter för att komprimera data i komprimeringsformatet "deflate". Den används också som grund för andra typer av komprimeringsfilter som GZIPOutputStream. Konstruktörer och beskrivning
DeflaterOutputStream(OutputStream ut):
Skapar en ny utström med en standardkompressor och buffertstorlek.
DeflaterOutputStream(OutputStream out boolean syncFlush) :
Skapar en ny utström med en standardkompressor, en standardbuffertstorlek och det specificerade spolläget.
DeflaterOutputStream(OutputStream out Deflater def) :
Skapar en ny utström med den angivna kompressorn och en standardbuffertstorlek.
DeflaterOutputStream(OutputStream out Deflater def boolean syncFlush) :
Skapar en ny utström med angivet kompressorspolningsläge och en standardbuffertstorlek.
DeflaterOutputStream(OutputStream out Deflater def int size):
Skapar en ny utström med angiven kompressor och buffertstorlek.
DeflaterOutputStream(OutputStream out Deflater def int size boolean syncFlush):
Skapar en ny utström med angiven kompressorbuffertstorlek och spolningsläge. Metoder:
void close() :
Writes remaining compressed data to the output stream and closes the underlying stream.
Syntax : public void close() throws IOException Overrides: close in class FilterOutputStream Throws: IOException
protected void deflate():
Writes next block of compressed data to the output stream.
Finishes writing compressed data to the output stream without closing the underlying stream.
Syntax : public void finish() throws IOException Throws: IOException
void flush() :
Flushes the compressed output stream.
Syntax : public void flush() throws IOException Overrides: flush in class FilterOutputStream Throws: IOException
void write(byte[] b int off int len) :
Writes an array of bytes to the compressed output stream.
Syntax : public void write(byte[] b int off int len) throws IOException Overrides: write in class FilterOutputStream Parameters: b - the data to be written off - the start offset of the data len - the length of the data Throws: IOException
void write(int b):
Writes a byte to the compressed output stream.
Syntax : public void write(int b) throws IOException Overrides: write in class FilterOutputStream Parameters: b - the byte to be written Throws: IOException
Java
//Java program to demonstrate DeflaterOutputStreamimportjava.io.FileInputStream;importjava.io.FileOutputStream;importjava.io.IOException;importjava.util.zip.DeflaterOutputStream;classDeflaterOutputStreamDemo{publicstaticvoidmain(String[]args)throwsIOException{FileOutputStreamfos=newFileOutputStream('file2.txt');//Assign FileOutputStream to DeflaterOutputStreamDeflaterOutputStreamdos=newDeflaterOutputStream(fos);//write it into DeflaterOutputStreamfor(inti=0;i<10;i++){dos.write(i);}//illustrating flush() method()dos.flush();//illustrating finish()//Finishes writing compressed data to the output stream// without closing the underlying streamdos.finish();//fos is not closed//writing some data on filefos.write('G');//Writes remaining compressed data to the output stream// closes the underlying stream.dos.close();}}
Notera: Utdata från programmet kommer inte att vara synligt på online-IDE eftersom file2.txt inte kan läsas här. Skapa frågesport