After knowing primitive data types and Java rules of Data Type Casting (Type Conversion), let us cast int to float.
The int and float, each takes 4 bytes of memory. The int holds a whole number and float holds a floating-point number. Assignment of int to float is done automatically by JVM.
The left-side value can be assigned to any right-side value and is done implicitly. The reverse like float to int requires explicit casting.
Examples of implicit casting
int i1 = 10;
long l1 = i1;byte x = 10;
short y = x;
Following program on int to float explains implicit casting. Observe, Java style where int is automatically assigned to float.
public class Conversions
{
public static void main(String args[])
{
int i1 = 10; // 4 bytes
float f1 = i1; // int is type converted to float
System.out.println("int value: " + i1); // prints 10
System.out.println("Converted float value: " + f1); // prints 10.0
}
}
Output screenshot of int to float Java
float f1 = i1;
As int value i1 is assigned to float f1, the whole number is converted into floating-point value 10.0.