CODEWITHSUNDEEP
javaeclipseswingcomputer-sciencejoptionpane
Kayden Stockwell
Kayden Stockwell

Reputation: 11

JOptionPane error on Eclipse

I am VERY new to Java (ie week 2 of AP Computer Science A). we have to use JOptionPane to make message boxes to use with math operations. My code was fine at school but I had to reformat it because I saved it on Facebook (no other option). Now I get errors on all the JOptionPane lines saying "Multiple markers at this line" and " Syntax error on tokens". How do I fix that. here is the code (please only fix what I am asking, nothing else, I know the code is probably weird) 

import javax.swing.JOptionPane;

public class OptioPane {

public static void main(String[] args) {    
}

    String a = JOptionPane.showInputDialog("Enter an integer");
    String b = JOptionPane.showInputDialog("Input another");
    int x = Integer.parseInt(a);
    int y = Integer.parseInt(b);
    JOptionPane.showMessageDiaglog(null, "The numbers added together is " +(x+y));

    String c = JOptionPane.showInputDialog("Enter an integer");
    String d = JOptionPane.showInputDialog("Input another");
    int f = Integer.parseInt(c);
    int g = Integer.parseInt(d);
    JOptionPane.showMessageDialog(null, "The second number subtracted from the first number is " +(f-g));

    String s = JOptionPane.showInputDialog("Enter an integer");
    String r = JOptionPane.showInputDialog("Input another");
    int w = Integer.parseInt(a);
    int q = Integer.parseInt(b);
    JOptionPane.showMessageDialog(null, "The numbers multiplied together is " +(w*q));

    String k = JOptionPane.showInputDialog("Enter an integer");
    String j = JOptionPane.showInputDialog("Input another");
    int n = Integer.parseInt(a);
    int m = Integer.parseInt(b);
    JOptionPane.showMessageDialog(null, "The first number divided by the second number is " +(n/m));

    String fir = JOptionPane.showInputDialog("Enter an integer");
    String tir = JOptionPane.showInputDialog("Input another");
    int ah = Integer.parseInt(a);
    int bh = Integer.parseInt(b);
    JOptionPane.showMessageDialog(null, "The first number modulated by the second number is " +(ah*bh));
    }

Upvotes: 0

Views: 8237

Answers (5)

Vamsi Uppuluri
Vamsi Uppuluri

Reputation: 1

If you face any issue I guess there are some suggestions given below the error in Eclipse. I have also encountered the same error it suggested me to import the java swing package then it got fixed.

Upvotes: -1

Sheikh
Sheikh

Reputation: 1

Try this:

import javax.swing.JOptionPane;
public class Dialogue1 {

    public static void main(String[]arg)
    {
        String number1,number2;
        number1=JOptionPane.showInputDialog("enter first number");
        number2=JOptionPane.showInputDialog("enter second number");
        int num1=Integer.parseInt(number1);
        int num2=Integer.parseInt(number2);
        int sum=num1+num2;
        String message=String.format("the sum is %d",sum);
        JOptionPane.showMessageDialog(null,sum);
    }
}

Store your result in another variable and then display it. It will work for sure without any error.

Upvotes: -1

user2957667
user2957667

Reputation: 1

I saw your comment about multiplication and if you still have problems with it, it's because of this 

  String s = JOptionPane.showInputDialog("Enter an integer");
    String r = JOptionPane.showInputDialog("Input another");
    int w = Integer.parseInt(a);
    int q = Integer.parseInt(b);
    JOptionPane.showMessageDialog(null, "The numbers multiplied together is " +(w*q));

when you input 5 into 's' and 5 into 'r' and get 30, you probably had 5 and 6 in 'a' and 'b' respectively.

Upvotes: 0

Rami
Rami

Reputation: 7300

It seems that you did something wrong while re-formatting the code because the entire code block should be inside the curly braces of the main method

Upvotes: 1

MadProgrammer
MadProgrammer

Reputation: 347332

Basically, the body of your code is out side of any executable context (not where it belongs)....

public class OptioPane {

    public static void main(String[] args) {    
    }

    /* All your stuff - out of bounds and behaving badly */

}

Instead, you need to place this code within a executable context, such as the main method...

public class OptioPane {

    public static void main(String[] args) {    
        /* All your stuff - playing nicely */
    }


}

Oh, add the this line...

JOptionPane.showMessageDiaglog(null, "The numbers added together is " +(x+y));

Is wrong, see the extra g in Dialog, it should be...

JOptionPane.showMessageDialog(null, "The numbers added together is " +(x+y));

Upvotes: 1

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