With a hierarchy of equals() methods, I prefer using an internal value check
for the parent values, and add in a class-specific check in the public equals()
method.
For example:
public class Parameter...
public boolean equals(Object obj)
{
boolean result = equalsInternal(obj)
&& this.getClass().equals(obj.getClass());
return result;
}
protected boolean equalsInternal(Object obj)
{
boolean result = (this == obj);
if (!result && obj instanceof Parameter)
{
Parameter other = (Parameter) obj;
result = ((this.name == null
? other.name == null
: this.name.equals(other.name))
&& this.value == null
? other.value == null
: this.name.equals(other.value));
}
return result;
}
public class Cookie...
public boolean equals(Object obj)
{
boolean result = equalsInternal(obj)
&& this.getClass().equals(obj.getClass());
return result;
}
protected boolean equalsInternal(Object obj)
{
boolean result = (this == obj);
if (!result && obj instanceof Cookie)
{
Cookie other = (Cookie) obj;
result = super.equalsInternal(other) // check parent's equality
&& (this.domain == null
? other.domain == null
: this.domain.equals(other.domain))
&& (this.path == null
? other.path == null
: this.path.equals(other.path));
}
return result;
}
