Java замените второй символ строки
class Main
{
public static void main(String[] args)
{
String str = "Techie Delight";
char ch = '_';
int pos = 6;
StringBuilder sb = new StringBuilder(str);
// replace character at the specified position
sb.setCharAt(pos, ch);
str = sb.toString();
// print the modified string
System.out.println(str);
}
}
Angry Albatross