Representing float values in Java

Question

Look at the three lines of code below.

  float f = 1;

  float g = 1.1;

  float h = 1.1f;

Second line has compilation errors, while the other lines do not have compilation errors. First line is working fine without suffix f and third line is working with suffix f. Why is this?

Answer 1

First line automatically casts int to float (ok).

Second line could not cast double to float because of loss of precision. You can make an explicit cast:

float g = (float) 1.1;

Third line does not need modification.