Alya'a Gamal questions

Alya'a Gamal answers

• To count number of 1's,0's,2's in a string in java
• How to get the (n) index of character inside String?
• Com object in Java , possible?
• How do I center a JTextfield
• Enable text highlighting in swing message-box
• BufferedImage - getting the value of a pixel in grayscale color model picture
• How to make a splash screen for GUI?
• Writing to console and text file
• Adding JComboBox to a JTable cell [duplicate]
• JSONObject ClassNotFoundException