Can't declare Variable in new method

In the very last method below

Code Java:

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import javax.swing.JOptionPane;
public class program08 {
public static void main(String[] args) {
    String getWeightString = JOptionPane.showInputDialog(null,
            "Enter the weight of the package");
    double getWeight = Double.parseDouble(getWeightString);
 
    String handling = JOptionPane.showInputDialog(null,
           "Would you like Special handling? Enter 'Y' for yes.");
    char handlingChar = handling.charAt(0);
 
    String insurance = JOptionPane.showInputDialog (null,
            "Would you like insurance? Enter 'Y' for yes.");
    char insuranceChar = insurance.charAt(0);
 
 
 
 
    JOptionPane.showMessageDialog(null, "The total cost is" + "");
    }
 
public static double price(double getWeight) {
    double price;
    if (getWeight <= 2.00)
        price = 1.00;
    else if (getWeight > 2.00 && getWeight < 5.00)
        price = 2.00;
    else
        price = 4.00;
 
    return price;
    }
 
public static double handlingPrice(char handlingChar) {
    double handlingPrice =0;
    if (handlingChar == 'Y' || handlingChar == 'y')
        handlingPrice = 5.00;
 
    return handlingPrice;
    }
 
public static double insPrice(char insuranceChar) {
    double insPrice = 0;
    if (insuranceChar == 'Y' || insuranceChar == 'y')
        String insPriceString = JOptionPane.showInputDialog(null,
                "How much insurance would you like?");
    insPrice = Double.parseDouble(insPriceString);
    insPrice += insPrice * 0.10;
    return insPrice;
    }
 
 
}

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At the line that reads "String insPriceString = JOptionPane.showInputDialog"
I get a warning that reads "Variable declaration not allowed here"
The assignment requires that the variable for the amount of insurance the user wants, if they want insurance, to be declared in a different method, not the main method.

You need to add {}s to enclose the statements controlled by the if statement.

The if statement is not a loop. In only needs {} if it is a loop, no?

you have to add braces in your condition

and concentrate with your return statement..

Learn this: coding style - Single statement if block - braces or no? - Programmers

You should always code {}s with if, else and loops