Question

How to convert int array (int[]) into list in Java

Answer 1

import java.util.List;
import java.util.Arrays;
 
public class MyClass {
    public static void main(String args[]) {
       int arr[] = { 1, 2, 3, 4, 5, 6, 7, 8 };
         
       List<Integer> list = Arrays.stream(arr).boxed().toList();
         
       list.forEach(System.out::println);
    }
}
 
 
 
 
/*
run:
 
1
2
3
4
5
6
7
8
 
*/

 

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Answer 2

import java.util.List;
import java.util.ArrayList;
 
public class MyClass {
    public static void main(String args[]) {
        int arr[] = { 1, 2, 3, 4, 5, 6, 7, 8 };
         
        List<Integer> list = new ArrayList<Integer>(arr.length);
        
        for (int n : arr) {
            list.add(n);
        }
         
        list.forEach(System.out::println);
    }
}
 
 
 
 
/*
run:
 
1
2
3
4
5
6
7
8
 
*/

 

70+ SQL courses for beginners and professionals