Description Emir Alikadic 2003-10-24 15:48:49 EDT

Found in Eclipse 3.0 M4 (Windows 2000 SP3)

Making a call to a static method of a class does not initialize the class as JLS
requires (c.f. 2.17.4 Initialization).  Given:

public class TypesafeConstant
{
    private String m_id;
    private String m_desc;
    private static Map s_constants = new HashMap();

    protected TypesafeConstant(String id, String desc)
    {
        m_id = id;
        m_desc = desc;
        String key = getClass().getName() + "." + id;
        synchronized (s_constants)
        {
            s_constants.put(key, this);
        }
    }

    public static TypesafeConstant mapIdToObject(String id, Class constantClass)
    {
        if (id == null)
        {
            return null;
        }

        String className = constantClass.getName();
        String key = className + "." + id;
        synchronized (s_constants)
        {
            TypesafeConstant constant = (TypesafeConstant) s_constants.get(key);
            if (constant == null)
            {
                throw new UnknownConstantException("Could not find constant of
class ["
                        + className + "] id [" + id + "]");
            }
            return constant;
        }
    }
}

public class MyConstant extends TypesafeConstant
{
    public final static MyConstant MY_CONSTANT = new MyConstant("uniqueID",
"useless constant");
}

Now, if I do

MyConstant myConstant = (MyConstant) MyConstant.mapIdToObject("uniqueID",
MyConstant.class);

I get the UnknownConstantException, which shouldn't be the case (and isn't if I
use Sun's compiler (1.4.1_05, 1.4.2_01), or even Eclipse compiler in 2.1.1).