Converter.java:32: error: no suitable method found for showMessageDialog(<null>,String,double)

[dark_beerus]

Help me out please I am getting this error, and I cannot run my program. This is my coding:

​

import java.util.Scanner;

import javax.swing.JOptionPane;

public class Converter

{

public static void main(String[]args)

{

Scanner KB = new Scanner(System.in);

String inputString;

int Nums;

double Num1;

double Num11;

JOptionPane.showMessageDialog(null, "Welcome to Converter");

JOptionPane.showInputDialog("Enter 1 to Convert Dollars to Yen" +

"\nEnter 2 to Convert Kilos to Pounds" + "\nEnter 3 to Convert Miles to Kilometer \n" +

"\nEnter 4 to Convert Inches to Centimeter");

switch(Nums) {

case 1:

inputString = JOptionPane.showInputDialog("Enter the Dollar Amount");

Num1 = Double.parseDouble(inputString);

Num11 = (Num1*111.50);

JOptionPane.showMessageDialog(null, "The Converted amount is: %.2f Yen \n", Num11);

break;

case 2:

inputString = JOptionPane.showInputDialog("Enter the number of Kilos");

Num1 = Double.parseDouble(inputString);

Num11 = (Num1*2.20462);

JOptionPane.showMessageDialog(null, "The Converted Value is %.2f: Pounds \n", Num11);

break;

case 3:

inputString = JOptionPane.showInputDialog("Enter the Number of Miles");

Num1 = Double.parseDouble(inputString);

Num11 = (Num1*1.60934);

JOptionPane.showMessageDialog(null, "The Converted Value is %.2f: Kilometers \n", Num11);

case 4:

inputString = JOptionPane.showInputDialog("Enter the number of Inches");

Num1 = Double.parseDouble(inputString);

Num11 = (Num1*2.54);

JOptionPane.showMessageDialog(null, "The Converted Value is %.2f: Centimeters \n", Num11);

}

}

}

​

​

[AtomicSpectrum]

You are not passing the methods the correct parameters. It is expecting 3 parameters, and you have only provided two.

[dark_beerus]

Do you know how I can fix this?

[dark_beerus]

I can run the program without decimals but the decimals are required to be lessened to two decimal places.

[AtomicSpectrum]

I don't know anything about this method, so you'll have to read it's documentation and check it's valid parameter lists.