Example usage for java.util.zip Deflater setLevel

Introduction

In this page you can find the example usage for java.util.zip Deflater setLevel.

Prototype

public void setLevel(int level) 

Source Link

Document

Sets the compression level to the specified value.

Usage

From source file:Main.java

License:asdf

public static void main(String[] argv) throws Exception {
    byte[] input = "asdf".getBytes();

    Deflater compressor = new Deflater();
    compressor.setLevel(Deflater.BEST_COMPRESSION);

    compressor.setInput(input);//from  www  .j a  v  a2s  .c  om
    compressor.finish();

    ByteArrayOutputStream bos = new ByteArrayOutputStream(input.length);

    byte[] buf = new byte[1024];
    while (!compressor.finished()) {
        int count = compressor.deflate(buf);
        bos.write(buf, 0, count);
    }
    bos.close();
    byte[] compressedData = bos.toByteArray();
}

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From source file:Main.java

public static void main(String[] argv) throws Exception {
    byte[] input = "www.java2s.com".getBytes();

    Deflater compressor = new Deflater();
    compressor.setLevel(Deflater.BEST_COMPRESSION);

    compressor.setInput(input);/*from w ww. ja  v  a  2  s  .co  m*/
    compressor.finish();

    ByteArrayOutputStream bos = new ByteArrayOutputStream(input.length);

    byte[] buf = new byte[1024];
    while (!compressor.finished()) {
        int count = compressor.deflate(buf);
        bos.write(buf, 0, count);
    }
    bos.close();
    byte[] compressedData = bos.toByteArray();
    System.out.println(Arrays.toString(compressedData));

}

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From source file:Main.java

public static void main(String[] argv) throws Exception {
    byte[] input = "this is a test".getBytes();

    Deflater compressor = new Deflater();
    compressor.setLevel(Deflater.BEST_COMPRESSION);

    compressor.setInput(input);/*  w w w . java  2 s  .c  om*/
    compressor.finish();

    ByteArrayOutputStream bos = new ByteArrayOutputStream(input.length);

    byte[] buf = new byte[1024];
    while (!compressor.finished()) {
        int count = compressor.deflate(buf);
        bos.write(buf, 0, count);
    }
    bos.close();

    byte[] compressedData = bos.toByteArray();
    Inflater decompressor = new Inflater();
    decompressor.setInput(compressedData);

    bos = new ByteArrayOutputStream(compressedData.length);

    buf = new byte[1024];
    while (!decompressor.finished()) {
        int count = decompressor.inflate(buf);
        bos.write(buf, 0, count);
    }
    bos.close();

    byte[] decompressedData = bos.toByteArray();
    System.out.println(new String(decompressedData));
}

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From source file:Main.java

public static String compressString(String str, String encoding) {
    String compressedString = "";

    try {/*from   w  w w.ja v  a 2  s . c om*/
        byte[] input = str.getBytes(encoding);
        Deflater d = new Deflater();
        d.setLevel(Deflater.BEST_COMPRESSION);
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        DeflaterOutputStream dout = new DeflaterOutputStream(out, d);
        dout.write(input);
        dout.close();
        compressedString = new String(Hex.encodeHex(out.toByteArray()));
    } catch (Exception e) {
        e.printStackTrace();
    }

    return compressedString;
}

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From source file:Main.java

public static byte[] compress(byte[] data, int level) throws IOException {
    if (data == null || data.length == 0) {
        return data;
    }//  w  ww . j  a v a2s.c om
    ByteArrayOutputStream bout = new ByteArrayOutputStream(data.length);
    Deflater deflater = new Deflater();
    deflater.setLevel(level);
    deflater.setInput(data);
    deflater.finish();
    byte[] buf = new byte[BUFFER_SIZE];
    while (!deflater.finished()) {
        int count = deflater.deflate(buf);
        bout.write(buf, 0, count);
    }
    deflater.end();
    bout.close();
    return bout.toByteArray();
}

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From source file:Main.java

public static byte[] compressZLIB(byte[] input) throws IOException {
    // Create the compressor with highest level of compression
    Deflater compressor = new Deflater();
    compressor.setLevel(Deflater.BEST_SPEED);
    // Give the compressor the data to compress
    compressor.setInput(input);//from   www .  j  a v a 2  s  .  com
    compressor.finish();
    // Create an expandable byte array to hold the compressed data.
    // You cannot use an array that's the same size as the orginal because
    // there is no guarantee that the compressed data will be smaller than
    // the uncompressed data.
    ByteArrayOutputStream bos = new ByteArrayOutputStream(input.length);
    // Compress the data
    byte[] buf = new byte[1024];
    while (!compressor.finished()) {
        int count = compressor.deflate(buf);
        bos.write(buf, 0, count);
    }
    bos.close();
    // Get the compressed data
    byte[] compressedData = bos.toByteArray();
    return compressedData;
}

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From source file:Main.java

public static byte[] compress(byte[] input) {
    if (input == null || input.length == 0)
        return input;
    Deflater compressor = new Deflater();
    compressor.setLevel(Deflater.BEST_COMPRESSION);

    // Give the compressor the data to compress
    compressor.setInput(input);//from   ww  w . j a v a 2  s .c  om
    compressor.finish();

    // Create an expandable byte array to hold the compressed data.
    // It is not necessary that the compressed data will be smaller than
    // the uncompressed data.
    ByteArrayOutputStream bos = new ByteArrayOutputStream(input.length);
    // Compress the data
    byte[] buf = new byte[1024];
    while (!compressor.finished()) {
        int count = compressor.deflate(buf);
        bos.write(buf, 0, count);
    }

    // Get the compressed data
    return bos.toByteArray();
}

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From source file:Main.java

public static byte[] zipCompress(byte[] input, int level) {
    Deflater compressor = new Deflater();
    compressor.setLevel(level);
    compressor.setInput(input);/*from  w  w w. j a  v  a 2  s  .co m*/
    compressor.finish();
    ByteArrayOutputStream bos = new ByteArrayOutputStream(input.length);
    byte[] buf = new byte[1024];
    while (!compressor.finished()) {
        int count = compressor.deflate(buf);
        bos.write(buf, 0, count);
    }
    try {
        bos.close();
    } catch (IOException e) {
    }
    return bos.toByteArray();
}

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From source file:Main.java

public static String compressAndB64EncodeUTF8Bytes(byte[] bytes) throws Exception {

    byte[] input = bytes;

    // Compressor with highest level of compression
    Deflater compressor = new Deflater();
    compressor.setLevel(Deflater.BEST_COMPRESSION);

    // Give the compressor the data to compress
    compressor.setInput(input);/*  w w  w .j  av  a2  s. c om*/
    compressor.finish();

    // Create an expandable byte array to hold the compressed data.
    // It is not necessary that the compressed data will be smaller than
    // the uncompressed data.
    ByteArrayOutputStream bos = new ByteArrayOutputStream(input.length);

    // Compress the data
    byte[] buf = new byte[32];
    while (!compressor.finished()) {
        int count = compressor.deflate(buf);
        bos.write(buf, 0, count);
    }
    try {
        bos.close();
    } catch (IOException e) {
    }

    // Get the compressed data
    byte[] compressedData = bos.toByteArray();

    return new String(Base64.encode(compressedData), "UTF-8");
}

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From source file:Main.java

/**
 * Compress the byte array passed//from w  w w  . j av  a 2  s.  c o m
 * <p>
 * @param input byte array
 * @param bufferLength buffer length
 * @return compressed byte array
 * @throws IOException thrown if we can't close the output stream
 */
public static byte[] compressByteArray(byte[] input, int bufferLength) throws IOException {
    // Compressor with highest level of compression
    Deflater compressor = new Deflater();
    compressor.setLevel(Deflater.BEST_COMPRESSION);

    // Give the compressor the data to compress
    compressor.setInput(input);
    compressor.finish();

    // Create an expandable byte array to hold the compressed data.
    // It is not necessary that the compressed data will be smaller than
    // the uncompressed data.
    ByteArrayOutputStream bos = new ByteArrayOutputStream(input.length);

    // Compress the data
    byte[] buf = new byte[bufferLength];
    while (!compressor.finished()) {
        int count = compressor.deflate(buf);
        bos.write(buf, 0, count);
    }

    // JCS-136 ( Details here : http://www.devguli.com/blog/eng/java-deflater-and-outofmemoryerror/ )
    compressor.end();
    bos.close();

    // Get the compressed data
    return bos.toByteArray();

}

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