java reflection getFields for private member| accessing object name value dynamically

Question

I want to print all of the class\'s properties with their name and values. I have used reflection, but getFields give me length of 0.

RateCode          


        

Answer 1

Class.getFields() only gives you public fields. Perhaps you wanted the JavaBean getters?

BeanInfo info = Introspector.getBeanInfo(getMaxRateCode.getClass());
for ( PropertyDescriptor pd : info.getPropertyDescriptors() )
    System.out.println(pd.getName()+": "+pd.getReadMethod().invoke(getMaxRateCode));

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If you want to access the private fields, you can use getDeclaredFields() and call field.setAccessible(true) before you use them.

for (Field f : getMaxRateCode.getClass().getDeclaredFields()) {
    f.setAccessible(true);
    Object o;
    try {
        o = f.get(getMaxRateCode);
    } catch (Exception e) {
        o = e;
    }
    System.out.println(f.getGenericType() + " " + f.getName() + " = " + o);
}

Answer 2

getFields only returns public fields. If you want all fields, see getDeclaredFields