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

0 vote225 views1 answer
Scanner library showing element not found exception
Java
0 vote225 views5 answers
Comment in Java
Java
0 vote235 views1 answer
How to clear a text file in java
Java
1 vote216 views1 answer
Pycharm qt designer
Java
0 vote196 views1 answer
Java string split from input string
Java
0 vote202 views1 answer
Ripple effect textview android
Java
3 votes212 views1 answer
Java get location of jar file
Java
0 vote217 views1 answer
Potenzieren java
Java
6 votes200 views2 answers
Java simpledateformat example
Java
3 votes210 views1 answer
How to initialize char in java
Java