Question

How to create ArrayList from array in Java

Answer 1

import java.util.ArrayList;
import java.util.Arrays;
 
public class MyClass {
    public static void main(String args[]) {
        String[] arr = {"java", "c", "c++", "rust"}; 
          
        ArrayList<String> al = new ArrayList<>(Arrays.asList(arr));
  
        System.out.println(al);
    }
}
  
  
  
/*
run:
  
[java, c, c++, rust]
 
*/

 

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Answer 2

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
 
public class MyClass {
    public static void main(String args[]) {
        String[] array = {"a", "b", "c", "d"};
         
        List<String> list = new ArrayList<>(Arrays.asList(array));
 
        System.out.println(list);
    }
}
 
 
 
/*
run:
 
[a, b, c, d]
 
*/
 
 

 

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Answer 3

import java.util.Collections;
import java.util.ArrayList;
import java.util.List;
 
public class MyClass {
    public static void main(String args[]) {
        String[] array = {"java", "c", "c++", "python"};
         
        List<String> list = new ArrayList<>();
        Collections.addAll(list, array);
 
        System.out.println(list);
    }
}
 
 
 
/*
run:
 
[java, c, c++, python]
 
*/

 

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