我不确定如何做到这一点。我在java类的介绍中它要求我们使用一个消息框(而不仅仅是system.out.println)我记得我们导入了一些东西,这是一个很容易的改变,但我无法找到它的任何注释。
此外,我在网站和本网站上发现的所有示例都超出了本课程的范围。
如果格式不正确,我提前道歉,这是我第一次在这里发帖。
TLDR:试图改变
System.out.print("Enter renter name: ");
renterName = input.next();
显示在消息框中而不是在Eclipse控制台中
我知道我们导入了一些东西(导入Scanner的方式相同),但是我找到的每个例子都是创建自己的对话框方法,这些方法超出了我的知识范围,而且这个类。
完整的代码如下:
import java.util.Scanner;
public class RentYourVideo {
public static void main(String[] args) {
int numberOfRentals, finalBill;
VideoRental rental = new VideoRental(); //runs constructor
Scanner input = new Scanner(System.in);
String renterName;
System.out.print("Enter renter name: ");
renterName = input.next();
System.out.print("Enter number of videos to rent: ");
numberOfRentals = input.nextInt();
rental.setRentalFee(); //needs to set rental fee to $5 according to assignment
rental.calculateBill(numberOfRentals); //from prev input
finalBill = rental.getFinalBill();
System.out.println(renterName + " your total bill for " +numberOfRentals+ " videos is $" +finalBill);
input.close();
}
}
//更改所有优惠&输出到对话/消息框!!!!
public class VideoRental {
private int rentalFee, finalBill, numberOfRentals;
public VideoRental() { //constructor method
rentalFee = 0;
finalBill = 0;
}
public void setRentalFee() { //set method
rentalFee = 5;
} //the assignment claims this must set rentalFee = 5
public void calculateBill(int inRented) {
numberOfRentals = inRented;
finalBill = rentalFee * numberOfRentals;
}
public int getFinalBill() {
return finalBill;
}
}
答案 0 :(得分:1)
检查出来:
String name = JOptionPane.showInputDialog(null, "Enter name here:");
http://docs.oracle.com/javase/7/docs/api/javax/swing/JOptionPane.html
import javax.swing.JOptionPane;
[...]
public static void main(String[] args) {
int numberOfRentals, finalBill;
VideoRental rental = new VideoRental(); //runs constructor
String renterName;
renterName = JOptionPane.showInputDialog(null, "Enter renter name: ");
numberOfRentals = Integer.parseInt(JOptionPane.showInputDialog(null, "Enter number of videos to rent: "));
rental.setRentalFee(); //needs to set rental fee to $5 according to assignment
rental.calculateBill(numberOfRentals); //from prev input
finalBill = rental.getFinalBill();
JOptionPane.showMessageDialog(null, renterName + " your total bill for " +numberOfRentals+ " videos is $" +finalBill);
}