How to use ArrayList addAll

Question

I want to fill an ArrayList with these characters   -     etc  How can I do this without having to add every character with arrayList add

User · Answer

May be this helps  List lt String gt  l   Arrays asList      -

User · Answer

Assuming you have an ArrayList that contains characters  you could do this   List lt Character gt  list   new ArrayList lt Character gt     list addAll Arrays asList       -

User · Answer

Collections addAll is what you want   Collections addAll myArrayList        -                Another option is to pass the list into the constructor using Arrays asList like this   List lt Character gt  myArrayList   new ArrayList lt Character gt  Arrays asList       -                 If  however  you are good with the arrayList being fixed-length  you can go with the creation as simple as list   Arrays asList       Arrays asList specification states that it returns a fixed-length list which acts as a bridge to the passed array  which could be not what you need

User · Answer

You can use the asList method with varargs to do this in one line   java util Arrays asList       -                If the list does not need to be modified further then this would already be enough  Otherwise you can pass it to the ArrayList constructor to create a mutable list   new ArrayList Arrays asList       -

User · Answer

Use Arrays class in Java which will return you an ArrayList    final List lt String gt  characters   Arrays asList      -      You will need a bit more work if you need a List lt Character gt

User · Answer

You can use Google guava as such   ImmutableList lt char gt  dirs   ImmutableList of       -

[java] How to use ArrayList.addAll()?

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