Introduction
In this lab, you will learn how to use the longValue() method in Java to get the long equivalent of a Long object. You will also understand the concepts of Boxing and Unboxing in Java.
Declare Long objects
In this step, declare two Long objects with the values of your choice.
Long n1 = 25L;
Long n2 = 46L;
Convert Long objects into long
In this step, use the longValue() method to convert the Long objects into their long equivalent.
// returns the value of the Long object n1 as a long
long i = n1.longValue();
// returns the value of the Long object n2 as a long
long j = n2.longValue();
Display the output
In this step, display the output on the console using System.out.println().
System.out.println("long value is " + i);
System.out.println("long value is " + j);
Get input from the user
In this step, get input from the user using the Scanner class.
System.out.print("Enter the value: ");
Scanner sc = new Scanner(System.in);
long i = sc.nextLong();
Convert long to Long
In this step, convert the long value into a Long object.
Long n = i;
Display the long value
In this step, use the longValue() method to get the long equivalent of the Long object and display it on the console.
System.out.println("Long Value is: " + n.longValue());
Compile and run the code
In this step, compile and run the code in the terminal using the following commands:
javac LongValueMethod.java
java LongValueMethod
Summary
In this lab, you learned how to use the longValue() method in Java to get the long equivalent of a Long object. You also learned the concepts of Boxing and Unboxing in Java.
