Does this count as a constant?

[shut patio]

private final double MAX_RANDOM_VALUE = 10.0;

private void lblQuestionComponentShown(java.awt.event.ComponentEvent evt) {     
                                 
     int num1 = (int) (Math.random() * MAX_RANDOM_VALUE) + 1;
int num2 = (int) (Math.random() * MAX_RANDOM_VALUE) + 1;
char operator = getRandomOperator();

String question = "What is " + num1 + " " + operator + " " + num2 + "?";
lblQuestion.setText(question);

int correctAnswer = getCorrectAnswer(num1, num2, operator);
btnSubmit.setActionCommand(String.valueOf(correctAnswer)); // Store the correct answer in the button's action command

// Clear the answer text field
tfieldAnswer.setText("");

}

[zenith silo]

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[tired frigate]

assuming you mean MAX_RANDOM_VALUE, yes, because it has exactly 1 value that it can ever be, and only 1 of it exists.

[shut patio]

thank you

[zenith silo]

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[opaque portal]

Technically some other variables can also have the same be true about them, yet not count as constants in the sense Java gives to it

[tired frigate]

i just finished exams, i don't have the mental capacity to go through that rn lol. feel free to elaborate on that for them

or for me, ig

[opaque portal]

MAX_RANDOM_VALUE is a constant when declared that way, yes. In Java's sense, a constant is a variable:

• final,
• initialized at its declaration,
• with a constant expression.

A constant expression is an expression of primitive or String type that is either:

• a literal, or
• a constant variable, or
• an operator which operands are all constant expressions

Here MAX_RANDOM_VALUE is final, of primtive type, and initialized at its declaration, with 10.0
10.0 is a literal, that's a constant expression

[tired frigate]

A constant expression is an expression of primitive or String type that is either:
wouldn't a value class also work?

[opaque portal]

That's a literal but not a constant as far as Java defines them

[tired frigate]

wait, it wouldn't be a literal though

[opaque portal]

Ah, sorry. But Java doesn't have value classes yet, does it?

[tired frigate]

public static final Instant DISCORD_EPOCH = Instant.ofEpochSecond(1420070400l);

[tired frigate]

sorry, value-based* classes. i can never remember the precise terminology lol

this is referred to as a "constant" in docs as well

[opaque portal]

It's informal anyway, java doesn't have an official concept of that beside preparing for when it will do

[tired frigate]

right, but a correctly-implemented value-based class doesn't really have anything different from a string, no?

other than strings being actually special with literals

[opaque portal]

It's just Java does something special for strings, such as definiing them as constants in class bytecode

I guess your screenshot demonstrates that even Javadocs don't necessarily mean "compile-time constants in the Java sense" when they use the word "constant"

[tired frigate]

i tend to think of anything immutable as capable of being a true constant

[opaque portal]

Which means that the word constant is fairly informal too

[tired frigate]

i guess "constant" in common/general usage would be different to "constant" in jvm/javac implementation, to summarize?

[opaque portal]

pretty much

[tired frigate]

cool