JAVA

java list to array

String[] arr = list.toArray(new String[list.size()]);

convert array to array list java

String[] arr = { 1, 2, 3, 4 }
ArrayList<Integer> list = new ArrayList<Integer>();
Collections.addAll(list, arr);
// 'list' now contains [1, 2, 3, 4]

java array to list

Integer[] spam = new Integer[] { 1, 2, 3 };
List<Integer> list = Arrays.asList(spam);

list to array java

list.stream().toArray(String[]::new));

convert array to list java

Arrays.asList(array);

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();

java array to list

Integer[] numbers = new Integer[] { 1, 2, 3 };
List<Integer> list = Arrays.asList(numbers);

array to list java

int[] ints = new int[] {1,2,3,4,5};
Arrays.stream(ints).boxed().toList();

java array to list

/*
Get the Array to be converted.
Create the List by passing the Array as parameter in the constructor of the List with the help of Arrays. asList() method.
Return the formed List.
*/

String[] namedata = { "ram", "shyam", "balram" }; 

List<String> list = Arrays.asList(namedata);

java convert array to list

Integer[] array = new Integer[] {
  23, 54, 12
};

java.util.List<Integer> list = java.util.Arrays.asList(array);
System.out.println(list);

arraylist to array java

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

convert array to list java

String[] myArray = new String[] { "I", "like", "eating", "pizza" };
List<String> myList = Arrays.asList(myArray);

myList.forEach(string -> System.out.println(string));

// -output-
// I
// like
// eating
// pizza
// -output-

java list to array

List<Integer> list = ...;
int[] array = new int[list.size()];
for(int i = 0; i < list.size(); i++) array[i] = list.get(i);

java list to array

List<String> stockList = new ArrayList<String>();
stockList.add("stock1");
stockList.add("stock2");

String[] stockArr = new String[stockList.size()];
stockArr = stockList.toArray(stockArr);

for(String s : stockArr)
    System.out.println(s);

java array to list

int[] spam = new int[] { 1, 2, 3 };
Arrays.stream(spam)
      .boxed()
      .collect(Collectors.toList());

java list to array

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

Conversion from Java List to Array

import java.util.*;
public class Main {
   public static void main(String args[]){
      List<String> list = new ArrayList<String>();
      list.add("Apple");
      list.add("Orange");
      list.add("Banana");

      System.out.println("Contents of list :"+list);
      String[] myArray = new String[list.size()];
      list.toArray(myArray);

      for(int i=0; i<myArray.length; i++){
         System.out.println("Element at the index "+i+" is :"+myArray[i]);
      }
   }
}

array to arraylist java

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

array to array list java

  List<Integer> vals = IntStream.of(shuffled).boxed().collect(Collectors.toList());

convert array to list java

Collections.addAll(list, array);