Conversion Value in the Assignment
Converting the value of a variable to another variable can be done with the following requirements:
• Two compatible data types
• Type of interest must be greater scope than other types of sources.
For example, the source integer into String destination.
Syntax as follows:
static int parseInt (String s)
static int parseInt (String s, int radix)
Parameter Explanation:
- s – This is a representation of a decimal string.
- radix – this will be used to convert string s to an integer.
- parseInt (String s): This returns an integer (decimal lodging only).
- parseInt (int i): This returns an integer, given a string representation of a decimal, binary, octal, or hexadecimal (radix equal to each of 10, 2, 8, or 16) numbers as input.
The program conversion Java example as follows:
| 02 | public static void main(String args[]){ |
| 03 | int x =Integer.parseInt(“9”); |
| 04 | double c = Double.parseDouble(“5”); |
| 05 | int b = Integer.parseInt(“444”,16); |
| 06 | System.out.println(x); |
| 07 | System.out.println(c); |
| 08 | System.out.println(b); |
 |
| coding result, in the above example is the conversion from Integer to Double, and Double to Integer |
Type Casting against type that does not Compatible
Cast is an instruction to the compiler to convert one type to the other. The syntax is as follows:
(Target-type) expression
Examples coding Java programs using a cast:
| 02 | public static void main(String args[]) { double x, y; |
| 03 | byte b; int i; char ch; x = 10.0; |
| 05 | i = (int) (x / y); // cast double to int |
| 06 | System.out.println(“Integer Output from x / y: ” + i); i = 100; |
| 08 | System.out.println(“Value of b: ” + b); i = 257; |
| 10 | System.out.println(“Value of b: ” + b); b = 88; // ASCII code for X |
| 11 | ch = (char) b; System.out.println(“ch: ” + ch); |
|
| java coding results cast |
