Arraylist to array java

Java arraylist to array

List<String> list = new ArrayList<>();
list.add("a");
list.add("ab");
list.add("abc");
list.add("abcd");
// convert
String[] array = list.toArray();

Convert arraylist to array in java

Integer[] arr = new Integer[al.size()]; 
  
        // ArrayList to Array Conversion 
        for (int i = 0; i < al.size(); i++) 
            arr[i] = al.get(i);

Java list to array

List<Foo> list = new ArrayList<>();
Foo[] array = list.toArray(new Foo[0]);

Source: stackoverflow.com

Arraylist to array java

ArrayList<String> ArrayLister=new ArrayList<>(){ArrayLister.add("Hi")};
String[] array=ArrayLister.toArray(String[]);

Array to arraylist java

ArrayList<Integer> list = new ArrayList<>(OtherList);
//it will copy all elements from OtherList to this one
//time complexity - O(n)

Arraylist to java

You can only use the to array method if you convert to any object type.

Similar codes

1 vote248 views1 answer
List java versions mac
Java
2 votes248 views10 answers
Test
Java
2 votes246 views2 answers
Hashmap.foreach example
Java
0 vote260 views1 answer
Youtube to mp4 stackoverflow
Java
0 vote294 views1 answer
Spring boot MVC config
Java Spring
0 vote195 views1 answer
Android list index
Java
0 vote258 views1 answer
Java 8 list to map with occurrences
Java
0 vote260 views1 answer
Android bottom navigation hiding views
Java
0 vote238 views1 answer
String to words java
Java
3 votes274 views3 answers
Java code example
Java