• 15 hours
  • Easy
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Last updated on 3/28/24

Check what you've learned about data and data types in Java

Evaluated skills

  • Identify how to use data and data types in Java

  • Question 1

    What components define a variable in programming?

    • Label, content, type

    • Description, value, storage

    • Name, value, type

    • Purpose, type, label

  • Question 2

    Select the true statements about variables and constants.

    Careful, there are several correct answers.

    • Constants are variables that cannot be assigned a value from a variable or another constant. For example, the following example is not possible:

      int count = 10;
final int steps = count;

    • Constants are variables that can't change their initial values. For example, the following example is not possible:

      final int count = 10;
count += 12;

    • Using constants is encouraged in order to prevent an accidental change of value.

    • Using constants is restrictive since they can't change. They should be avoided.

  • Question 3

    Select the following code snippets:

    • The snippet that declares a whole number that can change.
    • The code snippet for a string that cannot change. 
    Careful, there are several correct answers.
    • int steps;
steps = 11;

    • final String title = "Programming is art!";

    • final int steps = 11;

    • String title = "Programming is art!";
title = "I love learning!";
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