Thread: simple calculation code

am trying to make this code work to do simple calculation

 
package inputuserifstatement;
import javax.swing.JOptionPane;
public class Inputboxesifstatement {
 
    public static void main(String[] args) {
double firstnumber;
        firstnumber = JOptionPane.showInputDialog("Enter Number");
 
       double secondnumber;
        secondnumber = JOptionPane.showInputDialog ("Enter Second Number");
 
double answer;
        answer = firstnumber + secondnumber;
 
      JOptionPane.showMessageDialog(null, answer);
      System.exit(0);

ok so what should i do
am a still a learner, just started 3 days ago

some thing is wrong here too
i will not give up
i hope some day i will give answer to people's problem

    public static void main(String[] args) {
        // TODO code application logic here
 
int user = 18;
        if(user < 16)
        { System.out.println("user is underage");
        }
        else if (user >= 18 && < 50) 
        {
     System.out.println("Required Age");
        }  
else {System.out.println("not of required age");

Guys help me out on this too

 public static void main(String[] args) {
        // TODO code application logic here
        int[][]aryNums;
        aryNums = new int [2][6];
        aryNums[0][0] = 10;  aryNums[1][0] = 60;
        aryNums[0][1] = 20;  aryNums[1][1] = 50;
        aryNums[0][2] = 30;  aryNums[1][2] = 40;
        aryNums[0][3] = 40;  aryNums[1][3] = 30;
        aryNums[0][4] = 50;  aryNums[1][4] = 20;
        aryNums[0][5] = 60;  aryNums[1][5] = 10;
 
        {
       System.out.println(aryNums[][] + " ");
        }
               System.out.println(" ");

I have already replied to the thread you posted the exact question on

http://www.javaprogrammingforums.com...tml#post125514

don't post new questions on a different questions thread and don't double post please. makes it harder for us to help you.