Little Help

How do I make the char go to uppercase?

Code:

//Philip Rego
//CSC 161 - 02
//Lab 11D

import java.util.Scanner;

public class four
{
	static String input;
	static int index;
	static char temp;
	static Scanner keyboard = new Scanner(System.in);

	public static void main(String[] args)
	{
		System.out.println("Input a string.");
			input = keyboard.next();

		char [] list = input.toCharArray();


		for(index = 0; index < list.length; index++)
		{
			temp = list[index];
			System.out.print(temp.toUpperCase());
		}

	}
}

 

Character.toUpperCase(char ch)