// concatenation: example #2
import javax.swing.JOptionPane;

public class concatenation2 {
  public static void main(String[] args) {

    // Prompt the user to enter a number: 
    String s1 = JOptionPane.showInputDialog("Type 1st input");
    String s2 = JOptionPane.showInputDialog("Type 2nd input");
    String s3 = s1 + s2;
    System.out.println(s3);
    
    System.exit(0);
  } 
}