public class FirstUpper {
public static void main(String[] args) {
String s = "I have a book";
System.out.println(strUpp(s));
}
public static String strUpp(String s){
String[] str = s.split(" ");
StringBuffer sb = new StringBuffer();
for(int i = 0;i < str.length;i++){
sb.append(Character.toUpperCase(str[i].charAt(0))).append(str[i].substring(1));
sb.append(" ");
}
return sb.toString();
}
}