Answer Happy

I am having trouble centering the label above the buttons, and Iwould like for the "Exit" button to be under the "Distance" and"Temperature" buttons.
package cmis242week6;
import java.awt.*;import javax.swing.JButton;import javax.swing.JFrame;import javax.swing.JLabel;import javax.swing.JPanel;import javax.swing.JOptionPane;import java.awt.event.ActionListener;import java.awt.event.ActionEvent;
public class CMIS242 {
public static class Converter{
// attribute private double input;
// default constructorwith no parameter which sets input //to Double.NaN [Not aNumber] Converter(){ this.input= Double.NaN; }
// overloaded constructorwith input for parameter Converter(doubleinput){ this.input= input; }
// get and setmethods double getInput() { returnthis.input; } public void setInput(doubleinput) { this.input= input; }
// method convert() toreturn input value double convert() { returnthis.input; }
}// end Converter
public static class TemperatureConverterextends Converter{
// constructs that callparent constructor TemperatureConverter(){ super(); }
TemperatureConverter(double input){ super(input); }
/* overridden convert()method to convert Fahrenheit to Celsius *and return value; if theinstance has no input or not a number, *it should returnDouble.NaN */ double convert() { if(super.getInput() == Double.NaN) { return Double.NaN; } else{ return((super.getInput() - 32) *5)/9; } }
}// end TemperatureConverter
public static class DistanceConverter extendsConverter{
// constructors that callparent constructor DistanceConverter(){ super(); }
DistanceConverter(doubleinput){ super(input); }
/* overridden convert()method to convert input (distance in miles) * to distance(km) and returnvalue; if the instance has no input *or not a number, it shouldreturn Double.NaN **/ double convert() { if(super.getInput() == Double.NaN) { return Double.NaN; } else{ return super.getInput() * 1.609; } }
}// end DistanceConverter
public static class GUIConverter{
GUIConverter(){
//implement GUIConverter class JFrameframe = new JFrame("Converter"); frame.setLayout(new FlowLayout()); JPanelpanel = new JPanel(); // setlabel JLabellabel1 = new JLabel(); label1.setText("Please select which converter you woudlike:"); // GUIbuttons JButtondistance = new JButton("Distance"); JButtontemperature = new JButton("Temperature"); JButtonexit = new JButton("Exit");
// addbuttons to Panel panel.add(label1); panel.add(distance); panel.add(temperature); panel.add(exit);
// setsize and layout of frame frame.add(panel); frame.setLayout(new FlowLayout()); frame.setSize(500, 90); frame.setLocationRelativeTo(null); frame.setVisible(true); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); //terminate program when user closes GUI
// addaction listener to buttons; allows user to input value after //Distance Converter button is selected and get convertedresult distance.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e){ // store input String str = JOptionPane.showInputDialog("Input distance in milesto" + " convert to kilometers: "); double miles =Double.parseDouble(str); // conversion to double
// instance creation ofDistanceConverter object using miles DistanceConverter obj =new DistanceConverter(miles); // call convert() ofobject and display result JOptionPane.showMessageDialog(frame, miles + " miles equals "+ obj.convert()+ "kilometers."); } }); // allows user to inputvalue when Temperature button is selected and // returnsconverted result temperature.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e){ // store inputstring String str =JOptionPane.showInputDialog("Input Fahrenheit temp to" + " convert to Celsius: "); double fahren =Double.parseDouble(str); // conversion to double // instance creation ofTemperatureConverter object TemperatureConverterobj = new TemperatureConverter(fahren); JOptionPane.showMessageDialog(frame, fahren + " F equals "+ obj.convert() +"C."); } }); // programterminates when user clicks Exit exit.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e){ frame.dispose(); //dispose frame } }); }
publicstatic void main(String[] args) {
// call constructor to create GUI new GUIConverter(); } }}