net.ifok.png.compress

类 PngCompressor

java.lang.Object

net.ifok.png.compress.PngCompressor

public class PngCompressor
extends Object

This class is provided in order to offer command-line access for compressing PNG files.

It also exposes static helper methods for Java developers to use.

Command Line Instructions:

     java [options] -jar jdeli.jar compresspng [pngfile [pngfile ...]]
 

options:

1. -Doverwrite=true overwrite input files (default: "false")
2. -Dverbose=true print status messages (default: "false")

Example 1:

     java -jar jdeli.jar compresspng file.png
 

Example 2:

     java -Doverwrite=true -jar jdeli.jar compresspng /directory/*.png
 

Example 3:

     java -Dverbose=true -jar jdeli.jar compresspng /directory/*.png
 

The output filename is the same as the input name except that _compressed will be appended to the name. E.g. file.png will become file_compressed.png This can be changed to overwrite the existing file by setting the overwrite setting to true.

构造器概要

构造器

构造器和说明
PngCompressor()

方法概要

限定符和类型	方法和说明
static void	compress(File input, File output) compress 24/32 bit images to 8 bit palette image;
static void	compress(InputStream inputStream, OutputStream outputStream) compress 24/32 bit image to 8 bit palette image; This method does not close the provided OutputStream after the write operation has completed; it is the responsibility of the caller to close the stream,
static void	main(String[] args) For instructions, see main Javadoc for class

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

构造器详细资料

PngCompressor

public PngCompressor()

方法详细资料

compress

public static void compress(File input,
                            File output)
                     throws IOException

compress 24/32 bit images to 8 bit palette image;

参数:

input - input file or directory

output - output directory

抛出:

IOException

compress

public static void compress(InputStream inputStream,
                            OutputStream outputStream)
                     throws IOException

compress 24/32 bit image to 8 bit palette image;

This method does not close the provided OutputStream after the write operation has completed; it is the responsibility of the caller to close the stream,

参数:

inputStream - PNG file as InputStream

outputStream - Compressed PNG file as OutputStream

抛出:

IOException

main

public static void main(String[] args)

For instructions, see main Javadoc for class

参数:

args - For instructions, see main Javadoc for class

抛出:

IOException