How to determine the primitive type of a primitive variable?
java, primitive-types, typeof
Solution
Try the following:
int i = 20;
float f = 20.2f;
System.out.println(((Object)i).getClass().getName());
System.out.println(((Object)f).getClass().getName());
It will print:
java.lang.Integer
java.lang.Float
As for `instanceof`, you could use its dynamic counterpart `Class#isInstance`:
Integer.class.isInstance(20); // true
Integer.class.isInstance(20f); // false
Integer.class.isInstance("s"); // false
Problem
Is there a "typeof" like function in Java that returns the type of a primitive data type (PDT) variable or an expression of operands PDTs? `instanceof` seems to work for class types only.