Question

所以在我的程序中，我需要知道该程序是否在Windows 7或10中运行。是否有任何方法或模块可以做到这一点？

Answer 1

package loopy;
import java.io.*;

public class loopy {
    public static void main (String[] args) {
        // TODO: Use a loop to print every upper case letter
        for (int i = 65; i < 91; i++) {
            System.out.println((char)i);
        }
        // TODO: Get input from user. Print the same input back but with cases swapped.
        BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
        try {
            String input = in.readLine(); // get the actual input
            toggleStringCase(input); // MOVE IT HERE
        // The try/catch below are commented out since you can combine it to the try/catch above
        // START
        //} catch (IOException e) {
        //    // TODO Auto-generated catch block
        //    e.printStackTrace();
        //}
        //try {
        // END

            in.close();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

        // toggleStringCase(input); // was moved inside try-catch


    }

    // TODO: Implement this function to return the opposite case of the letter given. DO NOT USE any built in functions.
    // How to handle the case where the char given is not a letter?
    private static char toggleCase(char c) {
        return c;
    }

    // TODO: Implement this function to toggle the case each char in a string. Use toggleCase() to help you.
    private static String toggleStringCase(String str) {
        return str;
    }

}

有什么方法可以知道正在运行哪个版本的Windows？

1 个答案: