vowls

public class Vowels
{
  public static void main(String[] args)
  {
    Scanner in = new Scanner(System.in);
    System.out.print("Please enter a word: ");
    String word = in.next().toLowerCase();

    int count = 0;

    for(int i = 0; i < word.length(); i++)
    {
      String letter = word.substring(i, i + 1);
      if ("aeiouAEIOU".contains(letter))
      {
        count++;
      }
    }
    System.out.println(count + " vowels");
  }
}

public class Negative
{
  public static void main(String[] args)
  {
    Picture pic = new Picture();
    pic.load("eliza.png");
    pic.draw();
    pic.pause();
    for(int i = 0; i < pic.pixels(); i++)
    {
      Color c = pic.getColorAt(i);

      Color negative = new Color(255 - c.getRed(), 255 - c.getGreen(), 255 - c.getBlue());

      pic.setColorAt(i, negative);
    }
  }
}

public static void main(String[] args)
 throws FileNotFound Exception
 {
 	File inputFile = new File("input.txt");
 	Scanner in = new Scanner(inputFile);

 	while (in.hasNextDouble())
 	{
 		double value = in.nextDouble()
 	}
 }

public class Colors
{
public static void main(String[] args)
{
final int WIDTH = 30;
final int ROWS = 16;
final int COLUMNS = 16;

for (int i = 0; i < ROWS; i++) { for (int j = 0; j < COLUMNS; j++) { int x = WIDTH * j; int y = WIDTH * i; Rectangle rect = new Rectangle(x, y, WIDTH - 1, WIDTH - 1); int blue = i * 255 / (ROWS - 1); int green = i * 255 / (COLUMNS - 1); Color fillColor = new Color(0, blue, green); rect.setColor(fillColor); rect.fill(); } } } } [/java]