CODEWITHSUNDEEP
kotlin
TNB
TNB

Reputation: 79

what does mean javaClass in Kotlin?

I see usage of reflection with 

private fun invokeMethod(parameterTypes: Array<Class<*>>?, parameters: Array<Any>?, methodName: String?): Card? {
        try {
            //val method = javaClass.getDeclaredMethod(methodName, parameterTypes)
            for (x in parameterTypes!!) println("Parameter Types: $x")
            if (parameters != null) {
                for (x in parameters) print("Parameters: $x")
            }
            val method = javaClass.getDeclaredMethod(methodName, *parameterTypes)
            return method.invoke(this, parameters) as Card
        } catch (e: Exception) {
            println("Class Error ${e.message}")
        }

        return null
    }

That is kotlin by the way, Here is 

val method = javaClass.getDeclaredMethod(methodName, *parameterTypes)

the method calling from

javaClass

I know we can call the method like this

Test obj = new Test(); 
Class cls = obj.getClass();
cls.getDeclaredMethod("method2", int.class)

So my question is which class does javaClass refer to?

Upvotes: 0

Views: 263

Answers (1)

Alexey Romanov
Alexey Romanov

Reputation: 170899

It's an extension property on any non-nullable type. Here it's applied to this, which can be omitted as usual. So it will return the Class object for the instance it's called on, equivalent to this::class.java (which may be the same as the class the method defined in, or its subclass).

Upvotes: 2

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