package Fibonacci;
class Fibonacci 
{
public static void main(String[]args) {
int a = 0;
int b = 1;
    
String input; 
input = javax.swing.JOptionPane.showInputDialog("How many elements you want to print in a Fibonacci series");
int n = Integer.parseInt(input);
    

javax.swing.JOptionPane.showMessageDialog(null, a   " "  b   " ");
    
int c;

for(int i = 2; i < n; i  ) {
       
c = a   b;
        
javax.swing.JOptionPane.showMessageDialog(null, c   " ");
       
a = b;
b = c;
}
   
}
}
  

// Here is the code ? what can I change to display the output on only one dialogbox? Sorry I'm just new with learning java,

CodePudding user response：

You should first collect the data which you want to print in a DialogBox. Then you can print the data with the DialogBox (not in the for loop).

Take a look at following code.

import javax.swing.*;

public class main {

    public static long fibonacci(int n){
        long a = 0, b = 1;
        for (int i = 0; i < n; i  ) {
            b = a   (a = b);
        }
        return a;
    }

    public static void main(String... args){

        int input = Integer.parseInt(JOptionPane.showInputDialog("Number of print elements"));

        String fib = "";

        for (int i = 0; i <= input; i  ) {
            fib = fib   fibonacci(i)   "\n";
        }

        JOptionPane.showMessageDialog(null, fib);
    }
}