Floating---Test

public class FloatingTest {
	 public static void main(String[] args) {
		// TODO 自动生成的方法存根


		 float f1 = 1.23f;

		 double d1 = 4.56d;
		 double d2 = 4.56;

		 System.out.println(f1);
		 System.out.println((double)f1);
		 System.out.println(d1);
		 System.out.println((float)d2);


		 System.out.println(f1 == 1.229999999999f);
		 System.out.println(f1 - 1.2299999999);
		 System.out.println(d2 == 4.559999999999d);
		 System.out.println(d2 - 4.559999999999999d);

	}

}

21.08.03