[jboss-user] [JBoss Seam] - Re: Question on Converter

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sorry i was wrong. it seems to use the converter.

i have a question regarding the converter.

#{calculator.area}

the expression references a property which is defined here:

@Stateful
  | class CalculatorBean implements Calculator
  | 
  | float area;
  | public void setArea(float area)
  | {
  | 	this.area = area;
  | }
  | 
  | public float getArea()
  | {
  | 	return area;
  | }
  | 
  | public void calculate(){do something}
  | 

now what i want is, that if the property area is not set, the form field should be empty.

if no converter is specified #{calculator.area} is rendered to "0.0".

I tried the following in the toString method of the AreaConverter class:

  | public String getAsString(FacesContext facesContext, UIComponent component, Object obj)
  | 	{
  | 		if(obj == null || obj.equals(0.0))
  | 		{
  | 			String str = "";
  | 			return str;
  | 		}
  | 		
  | 		return obj.toString();
  | 	} 
  | 

but it still returns "0.0"

has somone a hint why this happens?



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