Java Swing tutorials. User interface input data validation
Scanner and JOptionPane not working properly together - Stack Overflow
Eclipse Community Forums: Newcomers » Not sure what to do with if in my situation
Java Swing - JOptionPane showMessageDialog example - Mkyong.com
JOptionPane. Import javax.swing.JOptionPane Use showInputDialog() for input. Only string values can be input. To convert an input value from a string. - ppt download
Java Swing – JOptionPane showOptionDialog example | LaptrinhX
Simple GUI-Based Input/Output with JOptionPane - Java - Languages - Programming - Computers