Java supports automatic type casting of integers to floating points

Question

Can anyone give description with example of above line?

Answer 1

Thanks Ondrej, Now I completely understand about automatic typecasting

int a=3;
float b=3.14f;
b=a; //This is automatic typecasting
System.out.println(b);

Output: 3.0

Answer 2

Ondrej, Sorry I didn't understand completely cause I'm new to java.

double someDouble = Double.parseDouble("123");

above line means we are doing here type casting like converting string type to double but it is manual so where is automatic type casting??

Answer 3

From string to double can not use casting. You can cast to double from these primitives types: byte, short, char, int, long, float.
That conversion from string to double I just added as an example because it is oftenly needed.

Answer 4

Ok I got it Thanks for clarification, +1 Vote

Answer 5

This page is not found http://docs.oracle.com/javase/jls/se8/html/jls-5.html

Answer 6

Just like this:

int someInt = 123;
double someDouble = (double) someInt;

From number string use this:

double someDouble = Double.parseDouble("123");

Answer 7

Your example is string conversion of float value.

Answer 8

http://docs.oracle.com/javase/specs/jls/se8/html/jls-5.html

Answer 9

Sorry for that link it should work now.