jls5_1.java

class Test {			

	public static void main(String[] args) {

		// Casting conversion (�5.4) of a float literal to
		// type int. Without the cast operator, this would
		// be a compile-time error, because this is a
		// narrowing conversion (�5.1.3):
		int i = (int)12.5f;

		// String conversion (�5.4) of i's int value:
		System.out.println("(int)12.5f==" + i);

		// Assignment conversion (�5.2) of i's value to type
		// float. This is a widening conversion (�5.1.2):
		float f = i;

		// String conversion of f's float value:
		System.out.println("after float widening: " + f);

		// Numeric promotion (�5.6) of i's value to type
		// float. This is a binary numeric promotion.
		// After promotion, the operation is float*float:
		System.out.print(f);
		f = f * i;

		// Two string conversions of i and f:
		System.out.println("*" + i + "==" + f);

		// Method invocation conversion (�5.3) of f's value
		// to type double, needed because the method Math.sin
		// accepts only a double argument:
		double d = Math.sin(f);

		// Two string conversions of f and d:
		System.out.println("Math.sin(" + f + ")==" + d);
	}
}