Provides access to the Java Native Interface.
The JavaClassWrapper singleton provides a way for the Godot application to send and receive data through the [url=https://developer.android.com/training/articles/perf-jni]Java Native Interface[/url] (JNI). [b]Note:[/b] This singleton is only available in Android builds. [codeblock] var LocalDateTime = JavaClassWrapper.wrap("java.time.LocalDateTime") var DateTimeFormatter = JavaClassWrapper.wrap("java.time.format.DateTimeFormatter")

var datetime = LocalDateTime.now() var formatter = DateTimeFormatter.ofPattern("dd-MM-yyyy HH:mm:ss")

print(datetime.format(formatter)) [/codeblock] [b]Warning:[/b] When calling Java methods, be sure to check [method JavaClassWrapper.get_exception] to check if the method threw an exception.
$DOCS_URL/tutorials/platform/android/javaclasswrapper_and_androidruntimeplugin.html
Returns the Java exception from the last call into a Java class. If there was no exception, it will return [code]null[/code]. [b]Note:[/b] This method only works on Android. On every other platform, this method will always return [code]null[/code].
Wraps a class defined in Java, and returns it as a [JavaClass] [Object] type that Godot can interact with. When wrapping inner (nested) classes, use [code]$[/code] instead of [code].[/code] to separate them. For example, [code]JavaClassWrapper.wrap("android.view.WindowManager$LayoutParams")[/code] wraps the [b]WindowManager.LayoutParams[/b] class. [b]Note:[/b] To invoke a constructor, call a method with the same name as the class. For example: [codeblock] var Intent = JavaClassWrapper.wrap("android.content.Intent") var intent = Intent.Intent() [/codeblock] [b]Note:[/b] This method only works on Android. On every other platform, this method does nothing and returns an empty [JavaClass].