any java person out there??

[Bacardi151]

i was wondering if the statement "import java.util.*" actually imports all the stuff such as Collection, LinkedList etc. all together or if i have to separately import one by one....i.e. import java.util.AbstractCollection, import java.util.AbstractList, and so forth

thanks in advance!

 

[slpaulson]

import java.util.* will import the whole thing.

 

[WannaFly]

havent used java in a while but IIRC:

import java.util.* will import ALL classes one banch directly undeneath. so java.util.abstractcollection will import but NOT java.util.abstractcollection.blurb
although, i'm sure its better to only import what you need, unless the compiler/interpreter does that for you.

 

[BigJ]

It imports everything thats in the util package.

EDIT: It imports everything.

 

[FrustratedUser]

I've been drinking Java all day. Good luck!

 

[halik]

Originally posted by: WannaFly
havent used java in a while but IIRC:

import java.util.* will import ALL classes one banch directly undeneath. so java.util.abstractcollection will import but NOT java.util.abstractcollection.blurb
although, i'm sure its better to only import what you need, unless the compiler/interpreter does that for you.

i dont think thats correct. Import java.util.* should import all the child classes of java.util package.
if you have java.util.color.rgb or something, rgb will get imported if you do java.util.*

 

[BigJ]

Originally posted by: halik

Originally posted by: WannaFly
havent used java in a while but IIRC:

import java.util.* will import ALL classes one banch directly undeneath. so java.util.abstractcollection will import but NOT java.util.abstractcollection.blurb
although, i'm sure its better to only import what you need, unless the compiler/interpreter does that for you.

i dont think thats correct. Import java.util.* should import all the child classes of java.util package.
if you have java.util.color.rgb or something, rgb will get imported if you do java.util.*

I just tested it (haven't used Java in about 4 months) and it imports EVERYTHING under util.

Edit: here's the structure for LinkedList

java.util.AbstractCollection
java.util.AbstractList
java.util.AbstractSequentialList
java.util.LinkedList

 

[Descartes]

I'm guessing you didn't see this stickied thread 😀

 

[johnjbruin]

Originally posted by: halik

Originally posted by: WannaFly
havent used java in a while but IIRC:

import java.util.* will import ALL classes one banch directly undeneath. so java.util.abstractcollection will import but NOT java.util.abstractcollection.blurb
although, i'm sure its better to only import what you need, unless the compiler/interpreter does that for you.

i dont think thats correct. Import java.util.* should import all the child classes of java.util package.
if you have java.util.color.rgb or something, rgb will get imported if you do java.util.*

i think you are correct. it should get everything underneath.

 

[Bacardi151]

is there some sort of update that i need because i seem to have trouble importing some of the utilities, such as Queue, HashMap...should those be inherited when i do the import of java.util.*; ??

and is Edge an actual class?...likewise with Vertex, anybody heard of those two? (this is for a network/graph)

 

[BigJ]

Originally posted by: Bacardi151
is there some sort of update that i need because i seem to have trouble importing some of the utilities, such as Queue, HashMap...should those be inherited when i do the import of java.util.*; ??

and is Edge an actual class?...likewise with Vertex, anybody heard of those two? (this is for a network/graph)

Edge and Vertex are not default classes in Java. Queue is not a class in java. HashMap is a class and its java.util.HashMap;

EDIT: I remember in my AP CS class that they provided us with a Queue interface and we built our own class off of it, ListQueue, etc;

BTW: The JavaDocs are your friend.

 

[dartworth]

wrong forum...

 

[fs5]

Originally posted by: dartworth
wrong forum...

see sig!