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它的工作原理,但我需要一个替代JOptionPane。这是一项家庭作业,我们不允许使用JOptionPane。这是我的工作,这不是教练想要的。JOptionPane的替代方案?
import java.awt.*;
import javax.swing.*;
@SuppressWarnings("serial")
public class calc extends JApplet {
double sum;
double product;
double difference;
double quotient;
public void init() {
String firstNumber = JOptionPane.showInputDialog("Enter the first number");
String secondNumber = JOptionPane.showInputDialog("Enter the second number");
String thirdNumber = JOptionPane.showInputDialog("Enter the third number");
double number1 = Double.parseDouble(firstNumber);
double number2 = Double.parseDouble(secondNumber);
double number3 = Double.parseDouble(thirdNumber);
sum = number1 + number2 + number3;
product = number1 * number2 * number3;
difference = number1 - number2 - number3;
quotient = number1 % number2 % number3;
}
public void paint(Graphics g) {
super.paint(g);
g.drawRect(15, 10, 270, 60);
g.drawString("Sum "+sum, 25, 25);
g.drawString("Product "+product, 25, 35);
g.drawString("Difference "+difference, 25, 45);
g.drawString("Quotient "+quotient, 25, 55);
}
}
学校,总是10年后在IT ... – Sebas 2014-09-18 20:57:13
这将有助于,如果你描述了练习的目标是什么。 – Guillaume 2014-09-18 20:57:35
'Java Swing' ---'JLabel','JTextField','JButton'等... – 2014-09-18 21:00:24