how to compare doubles in java

/**
 * @author lautturi.com
 * Java example: compare bigdecimals in java
 */

import java.util.*;
import java.math.BigDecimal;

public class Lautturi {

	public static void main(String[] args) {

		BigDecimal d1 = new BigDecimal("3.0");
		BigDecimal d2 = new BigDecimal("3.00");

		System.out.println(d1.equals(d2));
		System.out.println(d1.compareTo(d2) == 0);

	}
}

output:

false
true