[JAVA/PYTHON] Command Line Argument | String[] args | sys.argv

public class Args
{
    public static void main(String[] args)
    {
        // for (String arg : args)
        //     System.out.println(arg);
        //或者下面的遍历方法
        for (int i = 0; i < args.length; i++)
            System.out.println(args[i]);
    }
}

javac Args.java && java Args jerry elaine george kramer

jerry
elaine
george
kramer

import sys

# unpacking
scriptName, first, second, third, fourth = sys.argv

print("type(sys.argv) = " + str(type(sys.argv))) #可以看出sys.argv的类型就是个list
print("scriptName = " + scriptName)
print(first)
print(second)
print(third)
print(fourth)
print()

#遍历列表
for item in sys.argv:
    print(item)

python3 Sys.py jerry elaine george kramer

type(sys.argv) = <class ‘list‘>
scriptName = Sys.py
jerry
elaine
george
kramer

Sys.py
jerry
elaine
george
kramer