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1.java代码

InvokeByRuntime.java

import java.io.*;public class InvokeByRuntime {
       public static void main(String[] args) throws IOException, InterruptedException {
           String exe = "python";        String command = System.getProperty("user.dir") + "/calculator_simple.py";        String num1 = "1";        String num2 = "2";        String[] cmdArr = new String[] {
   exe, command, num1, num2};        Process process = Runtime.getRuntime().exec(cmdArr);        process.waitFor();        InputStream is = process.getInputStream();        DataInputStream dis = new DataInputStream(is);        String str = dis.readLine();        System.out.println(str);    }}

2.Python

calculator_simple.py

from sys import argvif __name__ == '__main__':	num1 = argv[1]	num2 = argv[2]	sum = int(num1) + int(num2)	print sum

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