我们最近在课堂上浏览了对话框并分配了作业。
分配是设计和实现一个应用程序,该应用程序使用对话框获取两个整数值(每个值一个对话框)并显示值的总和和乘积。使用另一个对话框询问用户是否要处理另一对值。
到目前为止,我尝试了这个项目,但是我遇到了一行代码问题,我在那里展示了我的答案。我正在使用NetBeans IDE,并使用显示方法JOptionPane.showConfirmDialog
来显示我的答案。它一直给我一个错误,上面写着“showMessageDialog
找不到合适的方法。”我试图使用System.out.println
,但它也给了我错误,所以我回到了方法。你能解释一下如何修复它以及我的代码错误的原因吗?
这是我到目前为止的代码:
package DialogBoxes;
import javax.swing.JOptionPane;
/**
*
* @author Tony
*/
public class SumProduct {
/**
* @param args the command line arguments
*/
public static void main(String[] args) {
// TODO code application logic here
String askNum1, askNum2, answerSum, answerPro;
int num1, num2, repeat;
do
{
askNum1 = JOptionPane.showInputDialog ("Enter your first integer:");
num1 = Integer.parseInt(askNum1);
askNum2 = JOptionPane.showInputDialog("Enter your second integer:");
num2 = Integer.parseInt(askNum2);
answerSum = "The sum is: " + ((num1 + num2));
answerPro = "The product is: " + ((num1 * num2));
JOptionPane.showMessageDialog(null, answerSum, answerPro);
repeat = JOptionPane.showConfirmDialog(null, "Would you like to test another set of numbers?");
}
while (repeat == JOptionPane.YES_OPTION);
}
}
答案 0 :(得分:2)
您可以使用JOptionPane.showMessageDialog(parentComponent, message);
方法
您需要创建一个带有产品和总和的String
,如下所示并将其传递给showMessageDialog
JOptionPane.showMessageDialog(null, answerSum + " " + answerPro);
答案 1 :(得分:1)
查看JOptionPane API:https://docs.oracle.com/javase/7/docs/api/javax/swing/JOptionPane.html#showMessageDialog(java.awt.Component,%20java.lang.Object)
看起来不像只有3个参数的showMessageDialog方法。您需要使用API提供的方法之一。
答案 2 :(得分:1)
请试一试。快乐的编码。
package com.pearson.nextgen.aggregatedsessionservice.web.rest;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
public class stacktest {
public static void main(String[] args) {
// TODO code application logic here
String askNum1, askNum2, answerSum, answerPro;
int num1, num2, repeat;
do
{
askNum1 = JOptionPane.showInputDialog ("Enter your first integer:");
num1 = Integer.parseInt(askNum1);
askNum2 = JOptionPane.showInputDialog("Enter your second integer:");
num2 = Integer.parseInt(askNum2);
answerSum = "The sum is: " + ((num1 + num2));
answerPro = " The product is: " + ((num1 * num2));
JFrame frame = new JFrame("TestFrame");
JOptionPane.showMessageDialog(null, answerSum + answerPro);
repeat = JOptionPane.showConfirmDialog(null, "Would you like to test another set of numbers?");
}
while (repeat == JOptionPane.YES_OPTION);
}
}