Convert int to char in java

Deep dive: Unraveling the cast

Let's explore the finer details with other conversion methods:

Working with digits

Working with single digits? Simply add 48 — the ASCII equivalent of '0':

int digit = 5; // Looking digit-ally cool!
char charDigit = (char) (digit + '0');
System.out.println(charDigit); // Prints '5', feeling fabulous...
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Fancy a different radix?

Use the Character.forDigit method to convert an int to a character in a specified radix (base):

int value = 10;
char hexChar = Character.forDigit(value, 16);
System.out.println(hexChar); // Prints 'a', hexadecimal rockstar!
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Embracing Unicode fully

Higher Unicode code points (> 65535)? Say hello to Character.toChars:

int codePoint = 0x1F600; // I've got a smiley in my pocket. Wanna see?
char[] chars = Character.toChars(codePoint);
System.out.println(chars); // Prints '😀', spreading joy one character at a time!
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Some tips

• Casting is clean, but forgets about different radices.
• Adding 48 only works for single-digit numbers.
• Keep the ASCII or Unicode table close for mapping insights.

Extra tricks: Making magic

Digits into characters

A handy way to convert a digit into a char without extra string manipulations:

int someDigit = 3; // Just a digit, minding its own business...
char directChar = (char) (someDigit + 48); // Voila! It's a char now!
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The reverse journey

Character.digit method will take your char and bring it back as an int:

char character = '9'; // Just a digit, chilling...
int digit = Character.digit(character, 10);
System.out.println(digit); // Prints 9, welcome back buddy!
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Pitfalls to avoid

• (char) cast can behave like a naughty child with values outside printable character range.
• Direct assignment may summon unexpected Unicode monsters.
• A char in Java speaks Unicode, not just ASCII.

Keep an eye on your conversions

Transfixed by the magical transformations? Validate with a system output:

System.out.println("(char)49 is: " + (char)49); // Prints '1'. Abracadabra!
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