Java Program - Forecast

Question

Can anyone help? Below is my program and I am getting 1error message when compiling and I can't figure it out.
* WeatherForecast.java
* Created on November 7, 2006, 9:38 AM
* To change this template, choose Tools | Template Manager
* and open the template in the editor.
package weatherforecast;
* Cynthia Castillo 1385177
* COP2250, Java Programming, Section 6
* Assignment #4
public class WeatherForecast
private double temperature; // in Fahrenheit
private String sky;
* Default constructor:
* initializes temperature to 70.0 and sky to "sunny"
* calls mutator methods to validate these default values
public WeatherForecast( )
temperature = 70;
sky = "sunny";
* Overloaded constructor:
* Allows client to set beginning values for temperature and sky
public WeatherForecast( double newTemperature, String newSky )
temperature = newTemperature;
sky = newSky;
//Accessor Method:
//returns temperature
public double getTemperature() //return temperature
return temperature;
//Accessor Method:
//returns sky conditions
public String getSky( ) //return the sky conditions
return sky;
* Mutator method:
* Allows client to set value of temperature
* setTemperature sets the value of temperature
* to 70.0 if newTemperature is less than -50 or greater than 150
public void setTemperature( double newTemperature )
if(temperature >= 0)
temperature = newTemperature;
else
System.err.println( "Temperature cannot be below -32." );
System.err.println( "Temperature not changed.");
* Mutator method:
* Allows client to set value of sky
* setSky sets the value of sky
* to "sunny" if newSky is neither "sunny", "snowy",
* "cloudy", nor "rainy"
public void setSky( String newSky )
newSky = newSky();
if(newSky <=0)
sky = newSky;
else
System.err.println( "Illegal value for sky." );
System.err.println( "Sky set to sunny." );
//The toString Method:
public String toString( )
return( "temperature: " + temperature + "; sky: " + sky );
/* Equals method:
* Compares two WeatherForecast objects for the same field values
* wf used as another WeatherForecast object
* return a boolean, true if this object
public boolean equals( WeatherForecast wf )
return ( Math.abs( temperature - wf.temperature ) < 0.0001
&& sky.equals( wf.sky ) );
* fahrenheitToCelsius method
* Computes the degrees Celsius temperature
* return a double, the temperature value in degrees Celsius
public double fahrenheitToCelsius( )
temperature = temperature - 32;
temperature = temperature * 5;
temperature = temperature / 9;
return temperature;
public static void main (String [] args)
double celsius;
double fahrenheit;
double fahrenheit = Double.parseDouble(args[0]);
double celsius = (5.0 / 9.0)*(fahrenheit -32);
* isConsistent method
* Checks if the temperature value and the sky conditions are compatible
* return a boolean, false if the temperature is below 32 and the sky is not snowy,
* or if the temperature is greater than 100 and the sky is not sunny, true otherwise
public boolean isConsistent()
return !( ( temperature < 32 && !sky.equals( "snowy" ) )
|| ( temperature > 100 && !sky.equals( "sunny" ) ) );
/* WeatherForecast Client*/
public class WeatherForecastClient
public static void main( String [] args )
WeatherForecast wf1 = new WeatherForecast( 23,"sunny" );
WeatherForecast wf2 = new WeatherForecast( 200, "rainy" );
System.out.print( "The temperature of weather forecast #1 is " + wf1.getTemperature( ) );
System.out.println( "F or " + wf1.fahrenheitToCelsius( ) + "C");
System.out.println( "The sky condition of weather forecast #1 is " + wf1.getSky( ) );
System.out.println( "Weather forecast #2 is " + wf2.toString( ) + "\n" );
if ( wf1.isConsistent( ) )
System.out.println( "weather forecast " + wf1 + " is consistent" );
else
System.out.println( "weather forecast " + wf1 + " is not consistent" );
if ( wf2.isConsistent( ) )
System.out.println( "weather forecast " + wf2 + " is consistent" );
else
System.out.println( "weather forecast " + wf2 + " is not consistent" );
System.out.println( );
if ( wf1.equals( wf2 ) )
System.out.println( "Original weather forecasts #1 and #2 are identical" );
else
System.out.println( "Original weather forecasts #1 and #2 are different" );
wf2.setTemperature( 23 );
wf2.setSky( "sunny" );
if ( wf1.equals( wf2 ) )
System.out.println( "Original weather forecast #1 and modified weather forecast #2 are identical" );
else
System.out.println( "Original weather forecast #1 and modified weather forecast #2 are different" );
}

Answer 1

Where exactly is the error occurring?
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