You can configure the behaviour of the im4java-library with the following environment-variables and system-properties:

IM4JAVA_TOOLPATH (environment)

Default searchpath for commandline tools. Must use the platform-specific path-delimiter.

im4java.useGM (system-property)

If true, use GraphicsMagick instead of ImageMagick.

im4java.maxProcs (system-property)

The maximum number of asynchronous processes the org.im4java.process.ProcessExecutor will run concurrently. If unset or if the property has the value auto, the number returned by Runtime.availableProcessors() is used. Note that the ProcessExecutor will at least use one process.

The package org.im4java.test contains a growing number of test-cases, demonstrating the various features of the im4java-library. Here is a quick overview.

TestCase1

Simple use of convert

TestCase2

Operation and sub-operations

TestCase3

Using montage

TestCase4

The ChannelMixer-class

TestCase5

Using mogrify

TestCase6

Using identify

TestCase7

Using composite

TestCase8

Using the Info-class

TestCase9

The NoiseFilter-class

TestCase10

Piping

TestCase11

Dynamic operations

TestCase12

Reading BufferedImage

TestCase13

Writing BufferedImage

TestCase14

GraphicsMagick

TestCase15

Using jpegtran

TestCase16

Asynchronous execution. Basic version.

TestCase16a

Asynchronous execution. This version uses Executors.newSingleThreadExecutor() to aquire a ExecutorService.

TestCase16b

Asynchronous execution. This version uses a ProcessExecutor to run at most two processes in parallel.

TestCase17

Using ufraw-batch

TestCase18

Using exiftool

TestCase19

Using dcraw

TestCase20

Setting search PATHs

TestCase21

Parallel processes

TestCase22

Using the BatchConverter-class