Youtor
Java wrapper classes 🎁
>> YOUR LINK HERE: ___ http://youtube.com/watch?v=4MiEznM8y8Q
Java wrapper classes tutorial explained • #Java #wrapper #classes • public class Main { • public static void main(String[] args) { • • // wrapper class = Provides a way to use primitive data types as reference data types • // Reference data types contain useful methods. • // Can be used with collections (ex.ArrayList) • • //primitive //wrapper • //--------- //------- • // boolean Boolean • // char Character • // int Integer • // double Double • • // autoboxing = the automatic conversion that the Java compiler makes between the primitive types and their corresponding object wrapper classes • // unboxing = the reverse of autoboxing. Automatic conversion of wrapper class to primitive • • Boolean a = true; • Character b = '@'; • Integer c = 123; • Double d = 3.14; • • } • • }
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