float variables initialization java

Question

The following code snippet gave me compiler error at Line 1.

public abstract class xyz
{

    float Gamma = 20.0; //Line 1
    public class Alpha
    {
        v         


        

Answer 1

float density = 20.0f;

If you try to assign a decimal number you must place an "f" at the end, otherwise Java will assume you are trying to assign a double .A double would more precisely cover more numbers that you could type in.