How to capitalize the first letter of a String in Java?

Question

I am using Java to get a String input from the user. I am trying to make the first letter of this input capitalized.

I tried this:

String name;  BufferedReader br = new InputStreamReader(System.in);  String s1 = name.charAt(0).toUppercase());  System.out.println(s1 + name.substring(1)); 

which led to these compiler errors:

• Type mismatch: cannot convert from InputStreamReader to BufferedReader

• Cannot invoke toUppercase() on the primitive type char

Answer 1

String str = "java"; String cap = str.substring(0, 1).toUpperCase() + str.substring(1); // cap = "Java" 

With your example:

public static void main(String[] args) throws IOException {     BufferedReader br = new BufferedReader(new InputStreamReader(System.in));     // Actually use the Reader     String name = br.readLine();     // Don't mistake String object with a Character object     String s1 = name.substring(0, 1).toUpperCase();     String nameCapitalized = s1 + name.substring(1);     System.out.println(nameCapitalized); }