Please set the JAVA_HOME variable in your environment, We need java(x64)! jdk8 or later is better! !!

Sure! To set the `JAVA_HOME` variable in your environment, you can follow these steps:

1. First, check if you have Java installed on your system. Open a terminal or command prompt and type `java -version`. If Java is installed, it will print the version information. If not, you need to download and install Java.

2. Once you have Java installed, you need to find the installation directory. On Windows, the default installation directory is `C:\Program Files\Java`. On Linux or macOS, it is usually installed in `/usr/lib/jvm`.

3. Next, set the `JAVA_HOME` environment variable to the installation directory. On Windows, you can do this by opening the System Properties dialog and going to the Advanced tab. Click the "Environment Variables" button and add a new system variable named `JAVA_HOME` with the value set to the installation directory. On Linux or macOS, you can set the variable in your shell startup script (e.g. `~/.bashrc` or `~/.zshrc`) by adding the line `export JAVA_HOME=/path/to/java` (replace `/path/to/java` with the actual installation directory).

4. Finally, add the `bin` directory to your system's `PATH` environment variable. On Windows, add `%JAVA_HOME%\bin` to the `PATH`. On Linux or macOS, add `$JAVA_HOME/bin` to the `PATH`.

After completing these steps, you should be able to run Java programs and tools from the command line.