Convert int to double java

/**
 * @author lautturi.com
 * Java example:convert int to double in java
 */

import java.util.*;

public class Lautturi {

	public static void main(String[] args) {

		int a = 1;
		double b = (double) a;
		System.out.println(a+ ", " + b); 

	}
}

output:

1, 1.0