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Java - convert ArrayList to array[]
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In this article, we would like to show you how to convert ArrayList to an array in Java.
Below are the most common ways to convert an ArrayList to a primitive list.
In this example, we are using the stream() method which works in Java 8 and earlier versions.
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import java.util.Arrays;2
import java.util.List;3
4
public class Example {5
6
public static void main(String[] args) {7
List<String> arrayList = new ArrayList<>(Arrays.asList("a", "b", "c"));8
9
String[] strings = arrayList.stream().toArray(String[]::new);10
11
for (String string : strings) {12
System.out.println(string);13
}14
}15
}Output:
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a2
b3
cNote:
In Java 11 and higher versions we no longer need to use the
stream()method - then the code will look like this:
String[] strings = list.toArray(String[]::new);
Here we use the generic version of the toArray method.
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import java.util.Arrays;2
import java.util.List;3
4
public class Example {5
6
public static void main(String[] args) {7
List<String> arrayList = new ArrayList<>(Arrays.asList("a", "b", "c"));8
9
String[] strings = arrayList.toArray(new String[0]);10
11
for (String string : strings) {12
System.out.println(string);13
}14
}15
}Output:
xxxxxxxxxx1
a2
b3
cxxxxxxxxxx1
import java.util.Arrays;2
import java.util.List;3
4
public class Example {5
6
public static void main(String[] args) {7
List<String> arrayList = new ArrayList<>(Arrays.asList("a", "b", "c"));8
9
String[] strings = arrayList.toArray(new String[arrayList.size()]);10
11
for (String string : strings) {12
System.out.println(string);13
}14
}15
}Output:
xxxxxxxxxx1
a2
b3
c