Java String codePointBefore() Method
Example
Return the Unicode of the first character in a string (the Unicode value of "H" is 72):
public class MyClass {
public static void main(String[] args) {
String myStr = "Hello";
int result = myStr.codePointBefore(1);
System.out.println(result);
}
}
Definition and Usage
The codePointBefore() method returns the Unicode
value of the character before the specified index in a string.
The index of the first character is 1, the second character is 2, and so on.
Note: The value 0 will generate an error, as this is a negative number (out of reach).
Syntax
public int codePointBefore(int index)
Parameter Values
| Parameter | Description |
|---|---|
| index | An int value, representing the index
following the Unicode that should be returned |
Technical Details
| Returns: | An int value, representing the Unicode
value before the specified index |
|---|---|
| Throws: | IndexOutOfBoundsException - if index is negative or not less than the length of
the specified string |
| Java Version: | 1.5 |
❮ String Methods
