boolean in java: what am I doing wrong?
- by Cheesegraterr
Hello, I am trying to make my boolean value work. I am new at programming java so I must be missing something simple. I am trying to make it so that if one of the tire pressures is below 35 or over 45 the system outputs "bad inflation" For class me must use a boolean which is what I tried. I cant figure out why this isnt working. No matter what I do the boolean is always true. Any tips?
public class tirePressure
{
private static double getDoubleSystem1 () //Private routine to simply read a double in from the command line
{
String myInput1 = null; //Store the string that is read form the command line
double numInput1 = 0; //Used to store the converted string into an double
BufferedReader mySystem; //Buffer to store input
mySystem = new BufferedReader (new InputStreamReader (System.in)); // creates a connection to system files or cmd
try
{
myInput1 = mySystem.readLine (); //reads in data from console
myInput1 = myInput1.trim (); //trim command cuts off unneccesary inputs
}
catch (IOException e) //checks for errors
{
System.out.println ("IOException: " + e);
return -1;
}
numInput1 = Double.parseDouble (myInput1); //converts the string to an double
return numInput1; //return double value to main program
}
static public void main (String[] args)
{
double TireFR; //double to store input from console
double TireFL;
double TireBR;
double TireBL;
boolean goodPressure;
goodPressure = false;
System.out.println ("Tire Pressure Checker");
System.out.println (" ");
System.out.print ("Enter pressure of front left tire:");
TireFL = getDoubleSystem1 (); //read in an double from the user
if (TireFL < 35 || TireFL > 45)
{
System.out.println ("Pressure out of range");
goodPressure = false;
}
System.out.print ("Enter pressure of front right tire:");
TireFR = getDoubleSystem1 (); //read in an double from the user
if (TireFR < 35 || TireFR > 45)
{
System.out.println ("Pressure out of range");
goodPressure = false;
}
if (TireFL == TireFR)
System.out.print (" ");
else
System.out.println ("Front tire pressures do not match");
System.out.println (" ");
System.out.print ("Enter pressure of back left tire:");
TireBL = getDoubleSystem1 (); //read in an double from the user
if (TireBL < 35 || TireBL > 45)
{
System.out.println ("Pressure out of range");
goodPressure = false;
}
System.out.print ("Enter pressure of back right tire:");
TireBR = getDoubleSystem1 (); //read in an double from the user
if (TireBR < 35 || TireBR > 45)
{
System.out.println ("Pressure out of range");
goodPressure = false;
}
if (TireBL == TireBR)
System.out.print (" ");
else
System.out.println ("Back tire pressures do not match");
if (goodPressure = true)
System.out.println ("Inflation is OK.");
else
System.out.println ("Inflation is BAD.");
System.out.println (goodPressure);
} //mainmethod
} // tirePressure Class
