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B4J Question Java 9
- Thread starter Daestrum
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![](data:image/svg+xml;charset=utf-8,<svg height="388px" width="860px" xmlns="http://www.w3.org/2000/svg" version="1.1"/>)
Can you upload an example of JavaObject producing warning messages?
The debugger will cause such warnings as it accesses non-public fields.
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Here is one of the messages (I know the code is not normal usage)
If I use
I get the warning
If I use
There is no warning issued.
If I use
B4X:
Dim rtttype As Object = asJO(con ).RunMethodJO("getAnnotatedReturnType",Null).RunMethod("getType",Null)If I use
B4X:
Dim rtttype As Object = asJO(Me).RunMethod("getReturnTypeInConstructor",Array(con))
...
public static Object getReturnTypeInConstructor(Constructor c){
Class<?> t = c.getAnnotatedReturnType().getType().getClass();
System.out.println("ret type : "+ c.getAnnotatedReturnType().getType().getTypeName());
return c.getAnnotatedReturnType().getType();
}
...
Last edited:
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There is a lot to explore in the JDK9. Might be worth building a summary of changes.
Just an example related to CSS - See the JDK9 Package javafx.css, select the CSS Reference Guide.
Tooltip: Set the tooltip durations, font size and background color. This applies to all views defined in a form.
Create an external Stylesheet "styles.css" in the dirassets folder, which is added to the B4J Files Manager:
and load like
Just an example related to CSS - See the JDK9 Package javafx.css, select the CSS Reference Guide.
Tooltip: Set the tooltip durations, font size and background color. This applies to all views defined in a form.
Create an external Stylesheet "styles.css" in the dirassets folder, which is added to the B4J Files Manager:
B4X:
.tooltip {
-fx-show-delay: 250ms;
-fx-show-duration: 2500ms;
-fx-hide-delay: 200ms;
-fx-background-radius: 2 2 2 2;
-fx-background-color: linear-gradient(#FFFFFF, #DEDEDE);
-fx-text-fill: black;
-fx-font-size: 18px;
}
// add more stylesand load like
B4X:
MainForm.Stylesheets.Add(File.GetUri(File.DirAssets, "styles.css"))
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I have currently problems, that the css files of a mac and of windows seems to be different in size. Today i had to correct a design, which was ~ 15% bigger on a mac than on windows. Maybe the size is now identical. When i add a stylesheet with my app, should than be all sizes identical?
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Resolved High-DPI issue described in Post #6.
According Oracle JDK9 the High-DPI threshold changed to 125% on Windows.
Overriding the UI Scale to anothor value, is done by following command line argument:
Example setting UI scale in the project attributes to 100%:
with output:
According Oracle JDK9 the High-DPI threshold changed to 125% on Windows.
Overriding the UI Scale to anothor value, is done by following command line argument:
B4X:
-Dglass.win.uiScale=<scale spec>
<scale spec> = [NNN%] | [NNNdpi] | [N.NNNN]
B4X:
#VirtualMachineArgs: -Dglass.win.uiScale=100%![](data:image/svg+xml;charset=utf-8,<svg height="206px" width="196px" xmlns="http://www.w3.org/2000/svg" version="1.1"/>)
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Whilst progressing with the CustomViews Library jRLViews (see attached) received a warning message when compiling the SliderX example (in folder examples/sliderx).
This comes after installing JDK9 and this kind of warning is documented by Oracle with the advice to report to the maintainers of a class to be aware for future releases - see below.
This comes after installing JDK9 and this kind of warning is documented by Oracle with the advice to report to the maintainers of a class to be aware for future releases - see below.
B4X:
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by anywheresoftware.b4j.object.JavaObject (file:/C:/Daten/b4/b4j/opensource/jRLViews/Examples/SliderX/Objects/SliderEx.jar) to method com.sun.javafx.collections.VetoableListDecorator.add(java.lang.Object)
WARNING: Please consider reporting this to the maintainers of anywheresoftware.b4j.object.JavaObject
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
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