can somebody fix my simple program

[Jay204]

i have a simple program im making with basic knowledge of java

its supposed to prompt for a celsius temperature
do the calculation to convert it to fahrenhiet
then pop up saying the result


this is what i have its telling me line 8 has incompatible types

import javax.swing.*;

public class TemperatureConverter {
public static void main(String[]args) {
String str1 = JOptionPane.showInputDialog("Enter Temperature in Celsius");
double num1 = Double.parseDouble(str1);
double num2 = 1.8*num1+32;
String str2 = JOptionPane.showMessageDialog(null,"The Temperature in Fahrenheit is" + num2 );
}
}



HELP

[r035198x]

i have a simple program im making with basic knowledge of java

its supposed to prompt for a celsius temperature
do the calculation to convert it to fahrenhiet
then pop up saying the result


this is what i have its telling me line 8 has incompatible types

import javax.swing.*;

public class TemperatureConverter {
public static void main(String[]args) {
String str1 = JOptionPane.showInputDialog("Enter Temperature in Celsius");
double num1 = Double.parseDouble(str1);
double num2 = 1.8*num1+32;
String str2 = JOptionPane.showMessageDialog(null,"The Temperature in Fahrenheit is" + num2 );
}
}



HELP

String str2 = JOptionPane.showMessageDialog(null,"The Temperature in Fahrenheit is" + num2 );

should be

JOptionPane.showMessageDialog(null,"The Temperature in Fahrenheit is" + num2 );

The method does not return anything and you do not need the String str2 anyway