Dart String toUpperCase() Function with Examples (original) (raw)
Last Updated : 07 Apr, 2025
The string **toUpperCase() method converts all characters of the string into an uppercase letter. The string **toUpperCase() function returns the string after converting all characters of the string into the uppercase letter.
**Syntax:
Str.toUpperCase()
- **Parameter: The string toUpperCase() function doesn't accept any parameter.
- **Return Value: The string toUpperCase() function returns the string after converting all characters of the string into the uppercase letter.
**Image Representation:
**Example 1 :
Dart `
void main() {
// str1 stores the string "geeks"
String Str1 = "geeks";
// str2 stores the string "fOr GEeks"
String Str2 = "fOr GEeks";
// print str1 in uppercase letter
print(Str1.toUpperCase());
// print str2 in uppercase letter
print(Str2.toUpperCase()); }
`
**Output:
GEEKS
FOR GEEKS
**Example 2 :
Dart `
void main() {
// str1 stores the string "COMPUTER"
String Str1 = "COMPUTER";
// str2 stores the string "laPToP"
String Str2 = "laPToP";
// print str1 in uppercase letter
print(Str1.toUpperCase());
// print str2 in uppercase letter
print(Str2.toUpperCase()); }
`
**Output:
COMPUTER
LAPTOP