并行运行来自不同编程语言的两段代码

Question

有什么方法可以在一个应用程序中并行运行来自 python 的函数和来自 java 的函数，并获取每个函数的结果来执行另一个进程？

Answer 1

There are at least three ways to achieve that.

a) You could use java.lang.Runtime (as in Runtime.getRuntime().exec(...) ) to launch an external process (from Java side), the external process being your Python script.

b) You could do the same as a), just using Python as launcher.

c) You could use some Python-Java binding, and from Java side use a separate Thread to run your Python code.

Answer 2

You should probably look for jython . This support Java and Python .

Answer 3

The question is fairly vague and without a specific use case, but I can suggest a generic approach of writing a shell script.

You could run both the Python and the Java functions if they're placed individually in separate .py and .java files, and write their outputs to temp files, so you can use the values for further computation.

my-shell$ vi my_script.sh

#!/usr/bin/env bash
python python_file.py argument1 argument2 >> py-output.txt
echo "completed execution of python script." 
javac JavaFile.java
java JavaFile >> java-output.txt
echo "completed execution of java funtion."

Note : This assumes your bash script is in the same directory as your python and java files, else, just give the full path to your files.

After you've saved the script, make it executable by typing chmod u+x my_script.sh . Then, just run it, and voilà, you're done. Two .txt files with the outputs from both functions, for you to use as you please.