This class implements an output stream filter for uncompressing data stored in the “deflate” compression format.
Constructors
- InflaterOutputStream(OutputStream out) : Creates a new output stream with a default decompressor and buffer size.
- InflaterOutputStream(OutputStream out, Inflater infl) : Creates a new output stream with the specified decompressor and a default buffer size.
- InflaterOutputStream(OutputStream out, Inflater infl, int bufLen) : Creates a new output stream with the specified decompressor and buffer size.
Methods:
- void close() : Writes any remaining uncompressed data to the output stream and closes the underlying output stream.
Syntax : public void close() throws IOException Overrides: close in class FilterOutputStream Throws: IOException - void finish() : Finishes writing uncompressed data to the output stream without closing the underlying stream.
Syntax :public void finish() throws IOException Throws: IOException - void flush() : Flushes this output stream, forcing any pending buffered output bytes to be written.
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 uncompressed output stream.
Syntax :public void write(byte[] b, int off, int len) throws IOException Overrides: write in class FilterOutputStream Parameters: b - buffer containing compressed data to decompress and write to the output stream off - starting offset of the compressed data within b len - number of bytes to decompress from b Throws: IndexOutOfBoundsException IOException NullPointerException ZipException - void write(int b) : Writes a byte to the uncompressed output stream.
Syntax :public void write(int b) throws IOException Parameters: b - a single byte of compressed data to decompress and write to the output stream Throws: IOException ZipException
Program 1
//Java program to illustrate InflaterInputStream classimport java.io.*;import java.util.Arrays;import java.util.zip.DeflaterInputStream;import java.util.zip.InflaterOutputStream; class InflaterOutputStreamDemo { public static void main(String[] args) throws IOException { byte b[] = {1, 2, 3, 4, 5, 6}; ByteArrayInputStream bin = new ByteArrayInputStream(b); DeflaterInputStream din = new DeflaterInputStream(bin); byte c[] = new byte[10]; din.read(c); din.close(); ByteArrayOutputStream bos = new ByteArrayOutputStream(); InflaterOutputStream ios = new InflaterOutputStream(bos); //illustrating write(byte b[],int off,int len) ios.write(c); //flushing ios.flush(); //Finishes writing uncompressed data to the output stream // without closing the underlying stream. ios.finish(); System.out.println(Arrays.toString(bos.toByteArray())); bos.close(); //illustrating close() ios.close(); }} |
Output :
[1, 2, 3, 4, 5, 6]
Program 2:
//Java program to illustrate InflaterInputStream classimport java.io.*;import java.util.Arrays;import java.util.zip.DeflaterInputStream;import java.util.zip.InflaterOutputStream; class InflaterOutputStreamDemo { public static void main(String[] args) throws IOException { byte b[] = {1, 2, 3, 4, 5, 6}; ByteArrayInputStream bin = new ByteArrayInputStream(b); DeflaterInputStream din = new DeflaterInputStream(bin); FileOutputStream fos=new FileOutputStream("file.txt"); byte c[] = new byte[10]; din.read(c); fos.write(c); din.close(); fos.close(); //reading the compressed data FileInputStream fis = new FileInputStream("file.txt"); ByteArrayOutputStream bos1=new ByteArrayOutputStream(); InflaterOutputStream ios = new InflaterOutputStream(bos1); int ch; //illustrating write() method while ( (ch=fis.read() ) != -1) { ios.write(ch); } System.out.print(Arrays.toString(bos1.toByteArray())); } } |
Output :
[1, 2, 3, 4, 5, 6]
Next article: Java.util.zip.InflaterInputStream class in Java
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