Array to arraylist java

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 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);

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)

Java string array to arraylist

new ArrayList( Arrays.asList( new String[]{"abc", "def"} ) );

Source: stackoverflow.com

Similar codes

1 vote281 views1 answer
Linear layout background color
Java
1 vote280 views1 answer
Difference between java and javax
Java
0 vote252 views1 answer
Instance block
Java
2 votes277 views1 answer
Java reverse linked list
Java
0 vote258 views1 answer
Peak index in a mountain array
Java
0 vote268 views1 answer
Recyclerview scramble after scrolling
Java
0 vote252 views1 answer
Java loop throug gson JsonElement
Java
0 vote254 views1 answer
Vec add to text field java
Java
0 vote258 views1 answer
Edit data from database sqlite android
Java
0 vote267 views1 answer
Spring valid request body custom message
Java