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Home/ Questions/Q 138145
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Asked: May 11, 20262026-05-11T07:13:04+00:00 2026-05-11T07:13:04+00:00

This is the implementation of java.util.Arrays.asList: () public static <T> List<T> asList(T… a) {

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This is the implementation of java.util.Arrays.asList: ()

public static <T> List<T> asList(T... a) {     return new ArrayList<T>(a); } 

How can that compile? I can’t find a constructor for ArrayList, AbstractList or AbstractCollection that accepts a parameter like T… och T[].

Source code from:

java version '1.5.0_16' Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_16-b06-284) Java HotSpot(TM) Client VM (build 1.5.0_16-133, mixed mode, sharing 
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  1. 2026-05-11T07:13:05+00:00Added an answer on May 11, 2026 at 7:13 am

    Okay, I think I see the confusion now.

    The ArrayList type in question is a nested type within the Arrays class – it’s not java.util.ArrayList.

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