This page describes how to build and install Ice for Java from source. If you prefer, you can also download a binary distribution.
- Build Requirements
- Building Ice for Java
- Installing Ice for Java
- Running the Java Tests
- Building the Ice for Android Tests
- IceGrid GUI Tool
Ice for Java builds and runs properly on Windows, macOS, and any recent Linux distribution. It is fully supported on the platforms listed on the supported platforms page.
You need the Slice to Java compiler to build Ice for Java and also to use
Ice for Java. The Slice to Java compiler (slice2java
) is a command-line tool
written in C++. You can build the Slice to Java compiler from source, or
alternatively you can install an Ice binary distribution that includes
this compiler.
You need JDK 8, JDK 11, JDK 17, or JDK 21 to build Ice for Java.
Make sure that the javac
and java
commands are present in your PATH.
The build produces bytecode in the Java 8 class file format (major version 52).
The IceGrid GUI tool's Metrics Graph feature requires JavaFX support. If you build the source with a JVM that lacks JavaFX support, this feature will be unavailable. Alternatively, building the source in an environment with JavaFX produces an IceGrid GUI JAR file that can be used in JVMs with or without JavaFX support, as the Metrics Graph feature is enabled dynamically.
Ice for Java uses the Gradle build system, and includes the Gradle wrapper in the distribution. You cannot build the Ice for Java source distribution without an Internet connection. Gradle will download all required packages automatically from the Maven Central repository located at https://repo1.maven.org/maven2/
Ice for Java supports protocol compression using the bzip2 classes included with Apache Commons Compress.
The Maven package ID for the commons-compress JAR file is as follows:
groupId=org.apache.commons, version=1.20, artifactId=commons-compress
The demos and tests are automatically setup to enable protocol compression by
adding the commons-compress JAR to the manifest class path. For your own
applications you must add the commons-compress JAR to the application CLASSPATH
to enable protocol compression.
The IceGrid GUI tool uses the JGoodies libraries Forms and Looks. The following versions were tested:
- JGoodies Forms 1.9.0
- JGoodies Looks 2.7.0
The Maven package ids for the JGoodies packages are as follows:
groupId=com.jgoodies, version=1.9.0, artifactId=jgoodies-forms
groupId=com.jgoodies, version=2.7.0, artifactId=jgoodies-looks
Gradle uses ProGuard to create the standalone JAR file for the IceGrid GUI tool.
The Maven package id for the ProGuard gradle plugin is as follows:
groupId=com.guardsquare, version=7.3.1, artifactId=proguard-gradle
Under macOS Gradle uses the Java Application Bundler to create an application bundle for the IceGrid GUI tool.
The Maven package id for the application bundler package is as follows:
groupId=com.panayotis, version=1.1.0, artifactId=appbundler
The build system requires the Slice to Java compiler from Ice for C++. If you
have not built Ice for C++ in this source distribution, you must set the
ICE_BIN_DIST
environment variable to cpp
and the ICE_HOME
environment
variable with the path name of your Ice installation. For example, on Linux with
an RPM installation:
export ICE_BIN_DIST=cpp
export ICE_HOME=/usr
On Windows with an MSI installation:
set ICE_BIN_DIST=cpp
set ICE_HOME=C:\Program Files\ZeroC\Ice-3.7.10
If you are using Ice for C++ from a source build on Windows, you must set
the CPP_PLATFORM
and CPP_CONFIGURATION
environment variables to match the
platform and configuration used in your C++ build:
set CPP_PLATFORM=x64
set CPP_CONFIGURATION=Debug
The supported values for CPP_PLATFORM
are Win32
and x64
and the supported
values for CPP_CONFIGURATION
are Debug
and Release
.
Before building Ice for Java, review the settings in the file
gradle.properties
and edit as necessary.
To build Ice, all services, and tests, run
gradlew build
Upon completion, the Ice JAR and POM files are placed in the lib
subdirectory.
If at any time you wish to discard the current build and start a new one, use these commands:
gradlew clean
gradlew build
To install Ice for Java in the directory specified by the prefix
variable in
gradle.properties
run the following command:
gradlew install
The following JAR files will be installed to <prefix>/lib
.
- glacier2-3.7.10.jar
- ice-3.7.10.jar
- icebox-3.7.10.jar
- icebt-3.7.10.jar
- icediscovery-3.7.10.jar
- icegrid-3.7.10.jar
- icegridgui.jar
- icelocatordiscovery-3.7.10.jar
- icepatch2-3.7.10.jar
- icessl-3.7.10.jar
- icestorm-3.7.10.jar
POM files are also installed for ease of deployment to a Maven-based distribution system.
Some of the Ice for Java tests employ applications that are part of the Ice for
C++ distribution. If you have not built Ice for C++ in this source distribution
then you must set the ICE_HOME
environment variable with the path name of your
Ice installation. On Unix:
export ICE_HOME=/opt/Ice-3.7.10 (For local build)
export ICE_HOME=/usr (For RPM installation)
On Windows:
set ICE_HOME=C:\Program Files\ZeroC\Ice-3.7.10
Python is required to run the test suite. To run the tests, open a command window and change to the top-level directory. At the command prompt, execute:
python allTests.py
If everything worked out, you should see lots of ok
messages. In case of a
failure, the tests abort with failed
.
The test/android/controller
directory contains an Android Studio project for
the Ice test suite controller.
To build an Ice application for Android, you need Android Studio and the Android SDK build tools. We tested the following components:
- Android Studio Giraffe
- Android SDK 33
To use Ice's Java mapping with Java 8, you need at least API level 24:
- Android 7 (API24)
You must first build Ice for Java refer to Building Ice for Java for instructions, then follow these steps:
- Start Android Studio
- Select "Open an existing Android Studio project"
- Navigate to and select the "java/test/android/controller" subdirectory
- Click OK and wait for the project to open and build
To build the tests against the Ice binary distribution you must set ICE_BIN_DIST
environment
variable to all
before starting Android Studio.
The Android Studio project contains a controller
app for the Ice test
suite. Prior to running the app, you must disable Android Studio's Instant Run
feature, located in File / Settings / Build, Execution, Deployment /
Instant Run.
Tests are started from the dev machine using the allTests.py
script, similar
to the other language mappings. The script uses Ice for Python to communicate
with the Android app, therefore you must build the Python mapping before continuing.
You also need to add the tools\bin
, platform-tools
and emulator
directories from the Android SDK to your PATH. On macOS, you can use the
following commands:
export PATH=~/Library/Android/sdk/cmdline-tools/latest/bin:$PATH
export PATH=~/Library/Android/sdk/platform-tools:$PATH
export PATH=~/Library/Android/sdk/emulator:$PATH
On Windows, you can use the following commands:
set PATH=%LOCALAPPDATA%\Android\sdk\cmdline-tools\latest\bin;%PATH%
set PATH=%LOCALAPPDATA%\Android\sdk\platform-tools;%PATH%
set PATH=%LOCALAPPDATA%\Android\sdk\emulator;%PATH%
Run the tests with the Android emulator by running the following command:
python allTests.py --android --controller-app
To run the tests on a Android device connected through USB, you can use
the --device=usb
option as shown below:
python allTests.py --android --device=usb --controller-app
To connect to an Android device that is running adb you can use the
--device=<ip-address>
python allTests.py --android --device=<ip-address> --controller-app
To run the tests against a controller
application started from Android
Studio you should omit the --controller-app
option from the commands above.
Ice for Java includes the IceGrid GUI tool. It can be found in the file
lib/icegridgui.jar
.
This JAR file is completely self-contained and has no external dependencies. You can start the tool with the following command:
java -jar icegridgui.jar
On macOS, the build also creates an application bundle named IceGrid GUI. You can start the IceGrid GUI tool by double-clicking the IceGrid GUI icon in Finder.