Java代码

一、Java代码

import java.text.NumberFormat;

import java.util.Scanner;

public class Pos {

public static void main(String[] args) {

// TODO Auto-generated method stub

@SuppressWarnings(“resource”)

Scanner scanner=new Scanner(System.in);

NumberFormat mFormat=NumberFormat.getInstance();

mFormat.setMaximumFractionDigits(2);

mFormat.setMinimumFractionDigits(2);

System.out.print(“请输入 顾客预付款金额：”);

Double money=0.0;

Double sales=0.0;

try {

money=Double.parseDouble(scanner.next());

} catch (Exception e) {

// TODO: handle exception

e.printStackTrace();

}

System.out.print(“请输入商品总价格：”);

try {

sales=Double.parseDouble(scanner.next());

} catch (Exception e) {

// TODO: handle exception

}

Double total_Prices=sales*1.07;

Double changes=money-total_Prices;

System.out.println(“顾客需要付款：” +mFormat.format(total_Prices));

System.out.println(“您需要找零：” +mFormat.format(changes));

}

}

Java代码

二、java如何与shell实现交互?

试试看用io截获，譬如： public static void main(string[] args) { string cmd = “pwd”; runtime run = runtime.getruntime(); string result = “”; try { process p = run.exec(cmd); bufferedinputstream in = new bufferedinputstream(p.getinputstream()); bufferedreader br = new bufferedreader(new inputstreamreader(in)); string linestr; while ((linestr = br.readline()) != null) { result += linestr; } br.close(); in.close(); } catch (exception e) { e.printstacktrace(); } system.out.println(result); }

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