var val deference in kotlin fun main () { var Android_Programing_language : String = "java" println ( "android official programing language: " + Android_Programing_language ) Android_Programing_language = "Kotline" println ( "2019 google announced android official programing language: " + Android_Programing_language ) val Android_MultiPlatform_language : String = "Dart" println ( "multiple device run : " + Android_MultiPlatform_language ) /* Android_MultiPlatform_language="" /* note: var--------------valu changable note: val--------------valu not changable (final) */ */ }