Floating point hell

Sandbox.java

import java.math.BigDecimal;
import org.junit.jupiter.api.Test;

public class Sandbox {
	@Test
	public void testFloat() {
		double raw = 21.05d;
		double computed = 21.025d+0.025d;
		double rounded = Math.round((21.025d+0.025d) * 1000d) / 1000d;
		System.out.println(raw);
		//21.05
		System.out.println(computed);
		//21.049999999999997
		System.out.println(rounded);
		//21.05
		System.out.printf("%.48f\n", raw);
		//21,050000000000000000000000000000000000000000000000
		System.out.printf("%.48f\n", computed);
		//21,049999999999997000000000000000000000000000000000
		System.out.printf("%.48f\n", rounded);
		//21,050000000000000000000000000000000000000000000000
		System.out.println(new BigDecimal(raw));
		//21.050000000000000710542735760100185871124267578125
		System.out.println(new BigDecimal(computed));
		//21.0499999999999971578290569595992565155029296875
		System.out.println(new BigDecimal(rounded));
		//21.050000000000000710542735760100185871124267578125
		System.out.println(Double.valueOf("21.050000000000000710542735760100185871124267578125").doubleValue());
		//21.05
	}
}

new BigDecimal("21.05")
good luck! :)

I wish I could do that :(.