Help with selecting options in java

[nervousprogramm]

Hi im new to the java language.

import javax.swing.JOptionPane;

public class TravelAgentSystem {

public static void main(String[] args) {
// Local variable declared
int selectValue;

// Main Menu is displayed

System.out.println("| Flight Travel Systems |");
System.out.println("|--------------------------|");
System.out.println("| Options: |");
System.out.println("| 1. Time |");
System.out.println("| 2. Price |");
System.out.println("| 3. Hotels |");
System.out.println("| 4. End |");
System.out.println("============================") ;

selectValue();

}
public static void selectValue()
{

int choice = -1;
while(choice < 0)
{
String input = JOptionPane.showInputDialog("Please select an option: ");
}

}
}

I want to make it so when i select an option such as 1, it will take me to a new option where i can display more infomation.
Anyone know how i can go about doing this?

[Fou-Lu]

That's wierd; you're combining gui and cli for io?
The input within the selectValue method will contain the value entered into the option dialog. Cast that to an integer with Integer.parseInt and assign it to the choice. Then switch on the choice to determine what to do next.

[nervousprogramm]

Originally Posted by Fou-Lu

That's wierd; you're combining gui and cli for io?
The input within the selectValue method will contain the value entered into the option dialog. Cast that to an integer with Integer.parseInt and assign it to the choice. Then switch on the choice to determine what to do next.

At the moment im just sticking to basics so would using scanner be more easier?

also this is what ive done is it correct??

import javax.swing.JOptionPane;

public class TravelAgentSystem {

public static void main(String[] args) {
// Local variable declared
int selectValue;

// Main Menu is displayed

System.out.println("| Flight Travel Systems |");
System.out.println("|--------------------------|");
System.out.println("| Options: |");
System.out.println("| 1. Time |");
System.out.println("| 2. Price |");
System.out.println("| 3. Hotels |");
System.out.println("| 4. End |");
System.out.println("============================");

selectValue();

}
public static void selectValue()
{

int choice = -1;
while(choice < 0)
{
String input = JOptionPane.showInputDialog("Please select an option: ");
if (input.equals("1")){
System.out.println("fdsfds");
}
else if (input.equals("2")){
System.out.println("ggfdgd " );
}
else if (input.equals("3")){
System.out.println("hgfdhgf " );
}
else if (input.equals("4")){
System.out.println("nhgdhd " );
}
else {
JOptionPane.showMessageDialog(null, "User error,please select an option");

}

}
}
}



i need to change the system to options but at the moment the concept seems baffling. If i select 1 i want to bring up an array of flights in which can be selected

[Fou-Lu]

Yeah more or less.
I'd use the scanner and keep the components separate. If you want to use JOptionPane, I'd use that in conjunction with a frame instead of with the cli.
The while loop won't end though, so you'll need to do something with the choice variable. Or change it to something like a do/while with a boolean control and simply default it to not loop and simply swap it to loop if entry is no good.

[nervousprogramm]

Originally Posted by Fou-Lu

Yeah more or less.
I'd use the scanner and keep the components separate. If you want to use JOptionPane, I'd use that in conjunction with a frame instead of with the cli.
The while loop won't end though, so you'll need to do something with the choice variable. Or change it to something like a do/while with a boolean control and simply default it to not loop and simply swap it to loop if entry is no good.

Kk im going to convert it to CLI and then when i finish i will convert to GUI to get a better understanding. Thanks for the help, i need a nice break lol.