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# TensorFlow for Java
Java bindings for TensorFlow.
> *WARNING*: The TensorFlow Java API is incomplete and experimental and can
> change without notice. Progress can be followed in
> [issue #5](https://github.com/tensorflow/tensorflow/issues/5).
>
> Till then, for using TensorFlow on Android refer to
> [contrib/android](https://www.tensorflow.org/code/tensorflow/contrib/android),
> [makefile](https://www.tensorflow.org/code/tensorflow/contrib/makefile#android)
> and/or the [Android camera
> demo](https://www.tensorflow.org/code/tensorflow/examples/android).
## Requirements
- [bazel](https://www.bazel.build/versions/master/docs/install.html)
- Environment to build TensorFlow from source code
([Linux](https://www.tensorflow.org/versions/master/get_started/os_setup.html#prepare-environment-for-linux)
or [Mac OS
X](https://www.tensorflow.org/versions/master/get_started/os_setup.html#prepare-environment-for-mac-os-x)).
If you'd like to skip reading those details and do not care about GPU
support, try the following:
```sh
# On Linux
sudo apt-get install python swig python-numpy
# On Mac OS X with homebrew
brew install swig
```
## Installation
Build the Java Archive and native library:
```sh
bazel build -c opt \
//tensorflow/java:libtensorflow.jar \
//tensorflow/java:libtensorflow-jni
```
## Example
### With bazel
Add a dependency on `//tensorflow/java:tensorflow` to the `java_binary` or
`java_library` rule. For example:
```sh
bazel run -c opt //tensorflow/java/src/main/java/org/tensorflow/examples:label_image
```
### With `javac`
- Add `libtensorflow.jar` to classpath for compilation. For example:
```sh
javac \
-cp ../../bazel-bin/tensorflow/java/libtensorflow.jar \
./src/main/java/org/tensorflow/examples/LabelImage.java
```
- Make `libtensorflow.jar` and `libtensorflow-jni.so`
(`libtensorflow-jni.dylib` on OS X) available during execution. For example:
```sh
java \
-Djava.library.path=../../bazel-bin/tensorflow/java \
-cp ../../bazel-bin/tensorflow/java/libtensorflow.jar:./src/main/java \
org.tensorflow.examples.LabelImage
```
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