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Uppercase First Character of String in Java
package net.javaguides.corejava;
/**
* Uppercase First Character of String in Java
* @author Ramesh Fadatare
*
*/
public class StringDemo {
/**
* Returns the input argument, but ensures the first character is
* capitalized (if possible).
*
* @param in
* the string to uppercase the first character.
* @return the input argument, but with the first character capitalized (if
* possible).
* @since 1.2
*/
public static String uppercaseFirstChar(String in ) {
if ( in == null || in .length() == 0) {
return in;
}
int length = in .length();
StringBuilder sb = new StringBuilder(length);
sb.append(Character.toUpperCase( in .charAt(0)));
if (length > 1) {
String remaining = in .substring(1);
sb.append(remaining);
}
return sb.toString();
}
public static void main(String[] args) {
String result = StringUtility.uppercaseFirstChar("java guides");
System.out.println(result);
}
}
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