Wednesday, April 21, 2021

Re: Java Method Overloading

I ask on the Gitter channel: schrieb am Mittwoch, 21. April 2021 um 21:44:27 UTC+2:

I could confirm your problem. Here is an example: 

[INFO] --- gwt-maven-plugin:1.0.0:compile (default) @ jsinterop-simple-example ---
[INFO] Compiling module com.github.lofi.Calculator
[INFO]    Errors in com/github/lofi/client/
[INFO]       [ERROR] Line 33: 'void Calculator.setValue(Float)' and 'void Calculator.setValue(Integer)' cannot both use the same JavaScript name 'setValue'.
[INFO]       [WARN] Line 33: [unusable-by-js] Type of parameter 'value' in 'void Calculator.setValue(Float)' is not usable by but exposed to JavaScript.
[INFO]       [WARN] Line 37: [unusable-by-js] Type of parameter 'value' in 'void Calculator.setValue(Integer)' is not usable by but exposed to JavaScript.
[INFO]    [WARN] Suppress "[unusable-by-js]" warnings by adding a `@SuppressWarnings("unusable-by-js")` annotation to the corresponding member. schrieb am Mittwoch, 21. April 2021 um 08:50:31 UTC+2:
The value was an Integer but is now an Float:

private  Float  value;

The "normal" setter is now: 
public void setValue(Float value) {
this.value = value;
Then, I added this method  to accomodate the current app   :
public void setValue(Integer value) {
this.value = value.floatValue();
Thanks for any hint

Le mardi 20 avril 2021 à 18:54:28 UTC+2, a écrit :
Could you show me the whole class?

this.value cannot be an Integer...


// This won't work in Java - Type mismatch...
private Integer value;

public void setValue(Integer value) {
   this.value = value.floatValue();
} schrieb am Dienstag, 20. April 2021 um 11:34:57 UTC+2:
I have a model class Item with a Integer value. I builded an app using this model.
For a new particular case, the value should be a Float as well.
So I changed the type of value to Float and regenerate setter/getter. 
In order to not change the current app, I try to create a overloading method : 
public void setValue(Integer value) {
this.value = value.floatValue();
At java level, everything seems ok, all compile errors are solved. But at GWT compilation, the call of this method complains with :
            [ERROR] Line 93: The method setValue(Float) in the type Item is not applicable for the arguments (Integer)
 like if GWT doesnot see my method setValue(Integer).
 Am I missing something ? Is there a way to make this works without creating a second separate attribute ?
Thanks in advance 

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