Question

Suppose a reference variable of type Integer called myInt is already declared.

Create an object of type Integer with the initial value of 10 and assign it to the reference variable myInt.

Answer 1

To assign the value 10 to a previously declared Integer reference variable called myInt, simply use 'myInt = new Integer(10);' or the preferred 'myInt = Integer.valueOf(10);' since the new Integer() constructor is deprecated in Java 9 and later.

Step-by-step explanation:

To create an object of type Integer with an initial value and assign it to a reference variable called myInt, you can use the following line of code in Java:

myInt = new Integer(10);

This line creates a new Integer object holding the value 10 and assigns it to the reference variable myInt. Note that starting with Java 9, this constructor is deprecated and it is recommended to use Integer.valueOf method:

myInt = Integer.valueOf(10);

The valueOf method is preferred because it makes use of the Integer cache, which is more memory efficient.To create an object of type Integer with the initial value of 10 and assign it to the reference variable myInt, you can use the Integer.valueOf() method. Here's an example:

Integer myInt = Integer.valueOf(10);

The Integer.valueOf() method is used to obtain an Integer object that represents the specified integer value. In this case, it returns an Integer object with the value 10, which is then assigned to the reference variable myInt.