Java list to array

Java array to list

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

Source: stackoverflow.com

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 array to list java

/*
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 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[]);

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);

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