Java Lab "View for Wind Correction Angle"

Need help with the following the java code, please help me! Thank you!!

import java.awt.*; import javax.swing.*; public class E6Bview extends JFrame { public E6Bview() { super( "E6B" ); JTabbedPane e6bTab = new JTabbedPane(); // add tabs to e6bTab e6bTab.addTab( "Density Altitude", null, new DensityAltView(), ""); add( e6bTab ); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); setSize(300,200); setVisible(true); } public static void main(String[] args) { E6Bview e6bv = new E6Bview(); } }

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import java.awt.*; import java.awt.event.*; import javax.swing.*; public class DensityAltView extends JPanel { private JTextField tfStationPressure; private JTextField tfStationTempF; private JTextField tfAirfieldAlt; private JButton bCalc; private JLabel lblDensityAlt; public DensityAltView() { setLayout( new GridLayout( 4,2, 2,2 ) ); add( new JLabel("Station Pressure (inHg)") ); tfStationPressure = new JTextField("29.95"); add( tfStationPressure ); add( new JLabel("Station Temperature (F)") ); tfStationTempF = new JTextField("59"); add( tfStationTempF ); add( new JLabel("Elevation (ft)") ); tfAirfieldAlt = new JTextField("0"); add( tfAirfieldAlt ); bCalc = new JButton( "Density Altitude" ); add( bCalc ); // connect button to handler here lblDensityAlt = new JLabel( "unknown" ); lblDensityAlt.setBorder( BorderFactory.createLineBorder(Color.black) ); add( lblDensityAlt ); }// constuctor end }// end class /* private class ButtonHandler implements ActionListener { public void actionPerformed(ActionEvent ae) { double sp = Double.parseDouble( tfStationPressure.getText() ); double st = Double.parseDouble( tfStationTempF.getText() ); double aa = Double.parseDouble( tfAirfieldAlt.getText() ); E6B e6b = new E6B(sp,st,aa, 0,0,0,0,0, 0, 0); String das = Double.toString( e6b.densityAltitude() ); lblDensityAlt.setText( das ); } } // end class buttonHandler */

E6B Lab

E6B Code

import java.util.Scanner; public class E6BFlightComputer { // instance variables private double P; private double T; private double DA; private int altitude; private int IAS; private double TAS; private double w; private double d; private double Vw; private double a; private double Vg; public E6BFlightComputer() { this.P = 0; this.T = 0; this.altitude = 0; this.IAS = 0; this.w = 0; this.d = 0; this.Vw = 0; } // parameterized constructor public E6BFlightComputer(double p, double t, int altitude, int iAS, double w, double d, double vw) { P = p; T = t; this.altitude = altitude; IAS = iAS; this.w = w; this.d = d; Vw = vw; calcDensityAltitude(); calcTrueAirSpeed(); calcWindCorrectionAngle(); calcGroundSpeed(); } // getters and setters public double getStationPressure() { return P; } public double getStationTemperature() { return T; } public double getDensityAltitude() { return DA; } public int getAltitude() { return altitude; } public int getIAS() { return IAS; } public double getWindDirection() { return w; } public double getDesiredCourse() { return d; } public double getTrueAirSpeed() { return TAS; } public double getWindSpeed() { return Vw; } public double getGroundSpeed() { return this.Vg; } public void setStationPressureP(double p) { P = p; } public void setStationTemperature(double t) { T = t; } public void setAltitude(int altitude) { this.altitude = altitude; } public void setIAS(int iAS) { IAS = iAS; } public void setWindDirection(double w) { this.w = w; } public void setDesiredCouse(double d) { this.d = d; } public void setWindSpeed(double vw) { Vw = vw; } private void calcDensityAltitude() { double temp = Math.pow( (17.326*this.P / (459.67 + this.T) ), 0.235 ); this.DA = 145442.16*(1 - temp); } private void calcTrueAirSpeed() { this.TAS = (double)this.IAS+(this.altitude/1000)*0.02*this.IAS; } private void calcWindCorrectionAngle() { this.a = Math.asin(this.Vw*Math.sin(this.w - this.d) / this.TAS); } private void calcGroundSpeed() { double d = Math.toRadians(this.d); double w = Math.toRadians(this.w); double a = Math.toRadians(this.a); double temp = 2*this.TAS*this.Vw*Math.cos( d - w + a); this.Vg = Math.sqrt( (this.TAS*this.TAS) + (this.Vw*this.Vw) - temp); } // main method public static void main(String args[]) { double stationP, stationT, airportE; int aircraftA; int Iairspeed; double desiredC, windD, windS; Scanner kybd = new Scanner(System.in); System.out.print("Enter the station Pressure in Hg: "); stationP = Double.parseDouble(kybd.nextLine()); System.out.print("Enter the station Temperature in F: "); stationT = Double.parseDouble(kybd.nextLine()); System.out.print("Enter the aircraft altitude in feet: "); aircraftA = Integer.parseInt(kybd.nextLine()); System.out.print("Enter the indicated airspeed in knots: "); Iairspeed = Integer.parseInt(kybd.nextLine()); System.out.print("Enter the desired course: "); desiredC = Double.parseDouble(kybd.nextLine()); System.out.print("Enter the wind direction: "); windD = Double.parseDouble(kybd.nextLine()); System.out.print("Enter the wind speed in knots: "); windS = Double.parseDouble(kybd.nextLine()); E6BFlightComputer FC = new E6BFlightComputer(stationP, stationT, aircraftA, Iairspeed, windD, desiredC, windS); System.out.printf("Density Altitude: .2f ", FC.getDensityAltitude()); System.out.println("True air speed: " + FC.getTrueAirSpeed()); System.out.println("Wind correction angle: " + FC.getTrueAirSpeed()); System.out.println("Ground speed: " + FC.getGroundSpeed()); } }