java create list integer range

To create a list of integers in a range in Java, you can use the IntStream.range method from the java.util.stream package.

Here is an example of how to create a list of integers from 1 to 10:

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

public class Main {
    public static void main(String[] args) {
        List<Integer> list = IntStream.range(1, 11).boxed().collect(Collectors.toList());
        System.out.println(list);  // prints [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
    }
}

This creates a stream of integers using the range method, boxes the integers into Integer objects using the boxed method, and collects them into a List using the collect method.

You can also use the IntStream.rangeClosed method to include the end of the range in the list. For example:

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

public class Main {
    public static void main(String[] args) {
        List<Integer> list = IntStream.rangeClosed(1, 10).boxed().collect(Collectors.toList());
        System.out.println(list);  // prints [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
    }
}