Thread: TemperatureConverter Return Problem

I seem to be getting a problem. Please tell me what is wrong with my code

Main.java

package temperatureconverter;
 
public class Main {
 
    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here
        TemperatureConverter myTemp=new TemperatureConverter();
        myTemp.convertTemp(10,'C');
 
 
    }
 
}

TemperatureConverter.java--CLASS

package temperatureconverter;
import java.lang.Math;
 
public class TemperatureConverter {
    //VARIABLES
    char C;
    char F;
 
 
    //METHODS
    public String convertTemp(int temperature, char convertTo){
        if(temperature>=0&convertTo==C){
          System.out.println((temperature - 32) * 5.0 / 9.0);
        }else{
          System.out.println((temperature * 9.0 / 5.0) + 32 );
 
            return   //<<<Problem HERE "mssing return value" WHAT SHOULD I PUT HERE, I WANT IT TO PRINT THE TEMPERATURE AFTER CONVERSION
          }
        }
 
 
}

I am trying to make a simple Temperature Converter