convert a character to uppercase in java code example

Example 1: how to make a char uppercase in java

char q = Character.toUpperCase('d');

Example 2: how to convert char to uppercase java

char first = Character.toUpperCase(userIdea.charAt(0));
betterIdea = first + userIdea.substring(1);

Example 3: uppercase java

string s="hello";
s = Character.toUpperCase(s.charAt(0)) + s.substring(1);
The output will be: Hello

Example 4: java lower case to upper case

toUpperCase()