How to Create a Unicode Character in Java from Its Numeric Code

How can I dynamically create a Unicode character in Java from its numeric code?

int unicodeNumber = 2202; // Example Unicode number
String unicodeChar = new String(Character.toChars(unicodeNumber));

In Java, displaying a Unicode character using its numeric code can be achieved dynamically with the help of the `Character.toChars(int codePoint)` method. This allows runtime construction of Unicode symbols without hardcoding the escape sequences.

// Correct way to create a Unicode character from a numeric code:
int unicodeNumber = 2202; // Example: Unicode for the partial derivative symbol (∂)
String symbol = new String(Character.toChars(unicodeNumber));
System.out.println(symbol); // This will print '∂'

Causes

• The issue arises because concatenating strings with Unicode escape sequences does not evaluate them; it treats them as literals instead.
• Using `System.out.println()` directly with the ` ` character sequences only shows the text representation rather than the actual character.

Solutions

• Use `Character.toChars(int codePoint)` to convert an integer to a Unicode character array; then convert it to a String.
• Utilize `new String(char[])` constructor to get the character representation.

Mistake: Trying to concatenate Unicode code point directly with a string.

Solution: Use `Character.toChars(int codePoint)` method instead.

Mistake: Assuming that adding `\u` prefix will create a valid character at runtime.

Solution: Understand that `\u` is only resolved at compile time and not at runtime. Use character conversion methods.