Integer arraylist to int array

//only works in java 8 or later
list.stream().mapToInt(i -> i).toArray();

Convert array of int to arraylist java

int[] ints = {1, 2, 3};
List<Integer> intList = new ArrayList<Integer>(ints.length);
for (int i : ints)
{
    intList.add(i);
}

int [] ints = list.stream().mapToInt(Integer::intValue).toArray();

int[] ints = {1, 2, 3};
List<Integer> intList = new ArrayList<Integer>(ints.length);
for (int i : ints)
{
    intList.add(i);
}

-1

Your_ArrayList_Name.stream().mapToInt(k->k).toArray();

-1

Similar codes

1 vote235 views1 answer
Make string
C#
0 vote236 views1 answer
Attribute decorator to require email format of string c#
C#
0 vote215 views2 answers
Streamwriter c#
C#
1 vote227 views1 answer
Aabb collision with direction
C#
0 vote221 views1 answer
Dotnet core vue in subdirectory
C#
6 votes215 views1 answer
C# date
C#
0 vote233 views2 answers
C# one line method
C#
0 vote226 views1 answer
Reverse a linked list C#
C#
38 votes318 views3 answers
Unity get mouse position
C#Unity
1 vote169 views1 answer
C# concant 2 tab
C#