Najít velké písmeno v řetězci java
Příklady kódu
N
String str = "hello world!";
// capitalize first letter
String output = str.substring(0, 1).toUpperCase() + str.substring(1);
// print the string
System.out.println(output);
// Hello world!
N
class Main {
public static void main(String[] args) {
// create a string
String message = "everyone loves java";
// stores each characters to a char array
char[] charArray = message.toCharArray();
boolean foundSpace = true;
for(int i = 0; i < charArray.length; i++) {
// if the array element is a letter
if(Character.isLetter(charArray[i])) {
// check space is present before the letter
if(foundSpace) {
// change the letter into uppercase
charArray[i] = Character.toUpperCase(charArray[i]);
foundSpace = false;
}
}
else {
// if the new character is not character
foundSpace = true;
}
}
// convert the char array to the string
message = String.valueOf(charArray);
System.out.println("Message: " + message);
}
}Související stránky
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