if (Character.isUpperCase(val)) {
System.out.println("Character is in Uppercase!");
}else {
System.out.println("Character is in Lowercase!");
}String var_name = "Jerry";
System.out.println(var_name.toUpperCase()); //JERRYstring s="hello";
s = Character.toUpperCase(s.charAt(0)) + s.substring(1);
The output will be: Hellopublic class Guru99 {
public static void main(String args[]) {
String S1 = new String("minúsculas convertidas en mayúsculas");
// Convertir a UpperCase
System.out.println(S1.toUpperCase());
}
}