> For the complete documentation index, see [llms.txt](https://docs.bluzelle.com/developers/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.bluzelle.com/developers/bluzeller2/deploy-your-dapps/blzjava.md).

# Java

 [![](https://raw.githubusercontent.com/bluzelle/api/master/source/images/Bluzelle%20-%20Logo%20-%20Big%20-%20Colour.png)](https://bluzelle.com/)

**blzjava** is a Java/Android library that can be used to access the Bluzelle database service.

* Build and API [docs](https://github.com/bluzelle/docs.bluzelle.com/tree/9d6e9030f30ff5cb68247d1b3ca53cd1d224e165/blzjava/src/com/bluzelle/README.md)
* Java [docs](https://aqoleg.github.io/blzjava)
* [Examples](https://github.com/bluzelle/docs.bluzelle.com/tree/9d6e9030f30ff5cb68247d1b3ca53cd1d224e165/blzjava/examples/README.md)
* Android [example](https://github.com/bluzelle/docs.bluzelle.com/tree/9d6e9030f30ff5cb68247d1b3ca53cd1d224e165/blzjava/android/README.md)
* [Tests](https://github.com/bluzelle/docs.bluzelle.com/tree/9d6e9030f30ff5cb68247d1b3ca53cd1d224e165/blzjava/test/com/bluzelle/README.md)

## Quickstart

Make sure that Java is installed and has a version at least 8 (JDK 1.8).

```
$ java -version
$ javac -version
```

If Java is not installed, install it.

```
$ sudo apt-get update
$ sudo apt-get install default-jdk
```

Download bluzelle.jar from [releases](https://github.com/bluzelle/blzjava/releases) or using terminal.

```
$ wget https://github.com/bluzelle/blzjava/releases/download/0.0.1/bluzelle.jar
```

Create file "Quickstart.java".

```java
import com.bluzelle.*;

public class Quickstart {

    public static void main(String[] args) {
        Bluzelle bluzelle = Bluzelle.connect(
                "around buzz diagram captain obtain detail salon mango muffin brother morning jeans display attend knife carry green dwarf vendor hungry fan route pumpkin car",
                "http://dev.testnet.public.bluzelle.com:1317",
                null,
                null
        );

        GasInfo gasInfo = new GasInfo(10, 0, 0);
        LeaseInfo leaseInfo = new LeaseInfo(1, 0, 0, 0);

        bluzelle.create("key", "value", gasInfo, leaseInfo);
        System.out.println("created");
        bluzelle.update("key", "new value", gasInfo, leaseInfo);
        System.out.println("updated");
        System.out.println("'key': " + bluzelle.read("key", false));
        bluzelle.delete("key", gasInfo);
        System.out.println("deleted");
    }
}
```

Compile.

```
$ javac -cp ./bluzelle.jar Quickstart.java
```

Run.

```
$ java -cp .:./bluzelle.jar Quickstart
```


---

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