/Java/Convert arraylist to array in java

Convert arraylist to array in 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);

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)

Similar codes

0 vote166 views1 answer
Jbutton open jframe java
Java
1 vote178 views2 answers
Min of an array java
Java
0 vote166 views1 answer
Abstractannotationconfigdispatcherservletinitializer maven dependency
Java
0 vote165 views1 answer
Android gridview item click effect ripple
Java
3 votes167 views1 answer
Javafx center node in gridpane
Java
1 vote170 views1 answer
Dexter dependency
Java
9 votes320 views2 answers
Change the default port in spring boot
Java Spring
4 votes167 views3 answers
Volley android
Java
0 vote187 views1 answer
Python code to java code converter online
Java
1 vote179 views1 answer
Pretty print json in console
Java