Lecture 8: Reference Data Types Solution

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Reference types coding exercise
Implement a ‘String’ data type, ‘someText’, initialized as ‘I am a student’

Reference types exercise solution
String someText = “I am a student”;

Reference types solution output
I am a student

Hi there, I am Marius from AlefTav Coding. Today, I will again look at Java's Reference data type. The coding exercise homework was to Implement a ‘String’ data type, ‘someText’, initialized as ‘I am a student’.

The solution code is:

String someText = "I am a student";

As always, when making a declaration in Java, you start with the data type, which is String in this case. Then, the storage name as someText. This is assigned to the words, I am a student, between quotation marks, " ".

String is Java's built-in data type for working with text. Also, note that String is a Java class, and therefore the first letter, S must be a capital letter.

Starting code

public class Lecture8 {
    public static void main(String[] args) {
        // TODO: Implement a ‘String’ data type, ‘someText’, initialized as ‘I am a student’
        System.out.println(someText);
    }
}

My class, here, is Lecture8 with the method, main(). This is followed by the TODO comment. Then, I do a printout of the value that the storage location, someText points to.

Complete solution

public class Lecture8 {
    public static void main(String[] args) {
        String someText = "I am a student";
        System.out.println(someText);
    }
}

With the TODO comment replaced by the solution code, String someText = "I am a student"; I can run my program. The output will be the text, I am a student. (See below)

In this lecture you learnt the solution to the coding exercise, implementing the String reference type in Java. Next time I will show a program where Java asks you a question.

My name is Marius, from AlefTav Coding. Until next time, KEEP CODING.

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