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Java

Posted by Aaron Coursolle
Aaron Coursolle
18,014 Points

Geeky Question: Why do we get a Boolean in the REPL?

In previous cases of using string values in the REPL we just get our string values echoed back to us; but when he types this:

java> fruit.add("cherry");

we get a boolean value:

java.lang.Boolean res2 = true

Background: We are adding array values on the fly thanks to this code:

List<String> fruit = new ArrayList<String> ();

1 Answer

anil rahman
anil rahman
7,786 Points
anil rahman
anil rahman
7,786 Points

Because it's like succeeded command or not succeeded or is not valid and is valid.

So when you do add a fruit to array it says true because it succeeded and an item has been added.

Plus it's probably a simple way of giving feedback to you as a user.