感谢您抽出宝贵时间阅读本文，但我会让它变得简单。我遇到的问题是我有一个程序可以改变一种温度并将其转换为另一种温度。我要添加到程序中的是，当用户单击按钮输入时，当用户单击键盘上的“输入”时，它会在另一个框中显示新温度。这是下面的代码：
import javax.swing.*;
import javax.swing.event.*;
import java.awt.*;
import java.awt.event.*;
import java.text.DecimalFormat;
import java.util.InputMismatchException;
public class Testlab {
static String celciusString = "Celcius";
static String fahrenheitString = "Fahrenheit";
static String kelvinString = "Kelvin";
static String celcius1String = "Celcius2";
static String fahrenheit1String = "Fahrenheit2";
static String kelvin1String = "Kelvin2";
private JLabel in = new JLabel("Input Scale");
private JLabel out = new JLabel("Output Scale");
private JLabel in1 = new JLabel("Input");
private JLabel out1 = new JLabel("Output");
private JTextField input = new JTextField(7);
private JTextField output = new JTextField(7);
private JFrame f = new JFrame("BasicGui"); // Create Frame
private JPanel pnlNorth = new JPanel(); //North Quadrant
private JPanel pnlSouth = new JPanel(); //South Quadrant
private JPanel pnlEast = new JPanel(); //East Quadrant
private JPanel pnlWest = new JPanel(); // West Quadrant
private JPanel pnlCenter = new JPanel(); // Center Quadrant
private JRadioButton celciusButton = new JRadioButton(celciusString);
private JRadioButton fahrenheitButton = new JRadioButton(fahrenheitString);
private JRadioButton kelvinButton = new JRadioButton(kelvinString);
private JRadioButton celcius1Button = new JRadioButton(celciusString);
private JRadioButton fahrenheit1Button = new JRadioButton(fahrenheitString);
private JRadioButton kelvin1Button = new JRadioButton(kelvinString);
//Menu
private JMenuBar mb = new JMenuBar(); // Menu Bar
private JMenu mnuFile = new JMenu("File"); // File Entry of Menu Bar
private JMenuItem mnuItemQuit = new JMenuItem("Quit"); // Quit Sub item
private JMenu mnuHelp = new JMenu("Help"); //Help Menu Entry
private JMenuItem mnuItemAbout = new JMenuItem("About"); //About Entry
//Constructor for GUI
public Testlab(){
//Set Menubar
pnlEast.setLayout(new GridLayout (4,1));
pnlWest.setLayout(new GridLayout (4,1));
f.setJMenuBar(mb);
//Radio Button --New
celciusButton.setMnemonic(KeyEvent.VK_C);
celciusButton.setActionCommand(celciusString);
celciusButton.setSelected(true);
fahrenheitButton.setMnemonic(KeyEvent.VK_F);
fahrenheitButton.setActionCommand(fahrenheitString);
kelvinButton.setMnemonic(KeyEvent.VK_K);
kelvinButton.setActionCommand(kelvinString);
celcius1Button.setMnemonic(KeyEvent.VK_C);
celcius1Button.setActionCommand(celcius1String);
celcius1Button.setSelected(true);
fahrenheit1Button.setMnemonic(KeyEvent.VK_F);
fahrenheit1Button.setActionCommand(fahrenheit1String);
kelvin1Button.setMnemonic(KeyEvent.VK_K);
kelvin1Button.setActionCommand(kelvin1String);
//Group the radio Buttons.
ButtonGroup group = new ButtonGroup();
group.add(celciusButton);
group.add(fahrenheitButton);
group.add(kelvinButton);
ButtonGroup group2 = new ButtonGroup();
group2.add(celcius1Button);
group2.add(fahrenheit1Button);
group2.add(kelvin1Button);
//Register A listener for the radio Buttons.
celciusButton.addActionListener(new RadioButtonEvent());
fahrenheitButton.addActionListener(new RadioButtonEvent());
kelvinButton.addActionListener(new RadioButtonEvent());
celcius1Button.addActionListener(new RadioButtonEvent());
fahrenheit1Button.addActionListener(new RadioButtonEvent());
kelvin1Button.addActionListener(new RadioButtonEvent());
//Build Menus
mnuFile.add(mnuItemQuit); //Create Quit Line
mnuHelp.add(mnuItemAbout); //Create About Line
mb.add(mnuFile); // Add Menu Items to form
mb.add(mnuHelp);
//Add Buttons
//pnlNorth.add(btnNorth);
pnlNorth.add(in1);
pnlSouth.add(out1);
pnlNorth.add(input);
pnlSouth.add(output);
pnlWest.add(in);
pnlWest.add(celciusButton);
pnlWest.add(fahrenheitButton);
pnlWest.add(kelvinButton);
pnlEast.add(out);
pnlEast.add(celcius1Button);
pnlEast.add(fahrenheit1Button);
pnlEast.add(kelvin1Button);
//Setup Main Frame
f.getContentPane().setLayout(new BorderLayout());
f.getContentPane().add(pnlNorth, BorderLayout.NORTH);
f.getContentPane().add(pnlSouth,BorderLayout.SOUTH );
f.getContentPane().add(pnlEast,BorderLayout.EAST );
f.getContentPane().add(pnlWest,BorderLayout.WEST );
f.getContentPane().add(pnlCenter,BorderLayout.CENTER);
//Allows the Swing App to be closed
f.addWindowListener(new ListenCloseWdw());
// Add Menu Listener
mnuItemQuit.addActionListener(new ListenMenuQuit());
}
public class ListenMenuQuit implements ActionListener{
public void actionPerformed(ActionEvent e){
System.exit(0);
}
}
//NEW STUFF TO ADD
public class RadioButtonEvent implements ActionListener{
public void actionPerformed(ActionEvent e){
String action = e.getActionCommand();
int temperture;
double newtemperture = 0.00;
try {
temperture = Integer.parseInt(input.getText());
if (celciusButton.isSelected() & celcius1Button.isSelected())
newtemperture = temperture;
else if (celciusButton.isSelected() & fahrenheit1Button.isSelected())
newtemperture = ((temperture * 1.8)) + 32;
else if (celciusButton.isSelected() & kelvin1Button.isSelected())
newtemperture = temperture + 273.15;
else if (fahrenheitButton.isSelected() & celcius1Button.isSelected())
newtemperture = (temperture - 32) * .55555555555;
else if (fahrenheitButton.isSelected() & fahrenheit1Button.isSelected())
newtemperture = temperture;
else if (fahrenheitButton.isSelected() & kelvin1Button.isSelected())
newtemperture = (temperture + 459.67) * 5/9;
else if (kelvinButton.isSelected() & celcius1Button.isSelected())
newtemperture = (temperture - 273.15);
else if (kelvinButton.isSelected() & fahrenheit1Button.isSelected())
newtemperture = (temperture * 9/5) - 459.67;
else if (kelvinButton.isSelected() & kelvin1Button.isSelected())
newtemperture = temperture;
} catch (Exception a) {
JOptionPane.showMessageDialog(null, "You did not input a value");
}
output.setText(new DecimalFormat("##.##").format(newtemperture));
}
}
public class ListenCloseWdw extends WindowAdapter{
public void windowClosing(WindowEvent e){
System.exit(0);
}
}
public void launchFrame(){
//Display Frame
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.pack(); // Adjusting panel to components for Display
f.setVisible(true);
}
public static void main(String args[]){
Testlab gui = new Testlab();
gui.launchFrame();
}
}