Java wrapper classes 🎁

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;

}

}

[BroCodez]

public class Main {

public static void main(String[] args) {

// wrapper class = provides a way to use primitive data types as reference data types
data types contain useful methods
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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