How do you clear a array?

Repet

yep.

also, (how do you do a lenny?)

colouredmirrorball

You can't "clear" an array but maybe you're looking for something like this?

Object[] o = new Object[10]; //an Array
o = null;

or

for(Object obj : o)
{
   obj = null;
}

Repet

so if I had an array like

String[] str = {"hi","hello","hey"};

and then did

str = null;

str would then be {} ?

@colouredmirrorball

GoToLoop

• We can change the content of Java's regular arrays. But we can't change their length! [-X
• That is, the # of element indices are determined at the creation of the array and stays so!
• If we need a different size, we gotta make a new array and arrayCopy() the old into the new.
• If we simply wanna "reset" their content, we can use Arrays.fill() in order to fill up the whole array w/ a chosen value, like 0 or an "" empty String for example:
  https://docs.Oracle.com/javase/8/docs/api/java/util/Arrays.html#fill-java.lang.Object:A-java.lang.Object-

GoToLoop

String[] interjections = {"hi", "hello", "hey"};
println(interjections);
println();

java.util.Arrays.fill(interjections, "");
printArray(interjections);

exit();

asimes

If you want every element to become an empty string then iterate over the array and assign each element to be an empty string

If you want to take an array that has say 3 elements and make it so that it has no elements then you should not be using an array. You want to use an ArrayList which can have its size changed

GoToLoop

For a more specialized dynamically-sizable String container, what about StringList: :D
https://Processing.org/reference/StringList.html

quark

If you had
String[] str = {"hi","hello","hey"};
and did
str = new String[0];
str would then be {} ?

Try it with this

String[] str = { "hi", "hello", "hey" };   
println("#");
for (String s : str)
    println(s);

str = new String[0];
println("#");
for (String s : str)
    println(s);

println("#");

// Now the array has no elements so attempting to use 
// the array would cause an index out of range exception

Output is

#
hi
hello
hey
#
#

Repet

thanks everyone! that helped a lot. :)

I have asked many questions about a program I have been doing (this being one of them) and I hope to be able to show you a PREVIEW of it soon! :D

Repet

forum.processing.org/two/discussion/12211/whitablet-one-preview