kotlin-stdlib / kotlin / Throwable / <init> <init> Common JVM JS Native 1.0 <init>(message: String?) <init>(cause: Throwable?) <init>() Common JVM JS Native 1.0 <init>(message: String?, cause: Throwable?) The base class for all errors and exceptions. Only instances of this class can be thrown or caught. Parameters message - the detail message string. cause - the cause of this throwable.