golang install java plug-in

Golang is a programming language with efficient development and fast running speed. It is gradually loved by developers. However, in some scenarios, we need to call Java code to complete certain functions. In this case, we need to install it. Java plug-in to realize the interoperability between Golang and Java.

This article will introduce how to install Java plug-ins in Golang.

Step 1: Install the Java environment

First, we need to install the Java environment locally. If you have already installed the Java environment, you can skip this step directly.

Visit Oracle's official website to download and install the latest Java Development Kit (JDK):

https://www.oracle.com/java/technologies/downloads/

After the installation is complete, use the following command to verify whether Java has been installed successfully:

java -version

If you installed Java correctly and configured the PATH environment variable, you will see your Java version information.

Step 2: Install Go language

Before installing the Java plug-in, we need to install the Go language. If you have already installed the Go language, you can skip this step directly.

Visit Go official website to download and install the latest Go compiler:

https://golang.org/dl/

After installation, verify whether Go has been installed successfully through the following command:

go version

If you correctly After the Go language is installed and the PATH environment variable is configured, you will see your Go version information.

Step 3: Install cgo

Cgo is a bridge between Go and C language interoperability. Here, we need to use cgo to realize the interaction between Golang and Java language. Install cgo through the following command ：

go get github.com/golang/cgo

After the installation is complete, we can enter the following command on the command line to verify whether cgo has been installed successfully:

go tool cgo -h

If you installed cgo correctly, you will see the cgo Use documentation.

Step 4: Install the Java plug-in

After installing the above components, we need to download the [Java.go](https://github.com/sbinet/go-java) plug-in. It is one of the main tools for Go to interact with Java. Download the Java.go plug-in through the following command:

go get github.com/sbinet/go-java

After installation, run the following command to build Java locally and bind it to Go:

cd $GOPATH/src/github.com/sbinet/go-java/examples/helloworld
go build -v

If everything goes well, you will find the executable file named helloworld in the $GOPATH/src/github.com/sbinet/go-java/examples/helloworld directory.

Run the following command to start the Java.go plugin:

java -Djava.library.path=./Java_net/Java.main/lib/ -jar Java_net/Java.main/lib/Java_net.Java.main-0.0.1-SNAPSHOT.jar &

Finally, run the following command from the command line to start helloworld:

./helloworld

If everything is fine, you will see Output 'Hello, Java World!'

We have just successfully installed the Java plug-in in Golang. In future development work, we can easily implement the connection between Golang and Java with the help of Java.go. communication between.

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