Question

How to convert a List of String to List of Integer in Java

Answer 1

import java.util.Arrays;
import java.util.List;
import java.util.stream.Collectors;

public class MyClass {
    public static void main(String args[]) {
        List<String> list = Arrays.asList( "234" , "54", "2", "7", "99", "120" );

		List<Integer> intList = list.stream()
								     .map(s -> Integer.parseInt(s))
								     .collect(Collectors.toList());

		System.out.println(intList);
    }
}
 
 
 
/*
run:
 
[234, 54, 2, 7, 99, 120]
 
*/

 

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