Simple Variable Problem

[DaoK]

I know that code is really basic but It show my question:

package test2;
import javax.swing.JOptionPane;
public class test2 {
public static void main ( String args [])
{
int x,
y,
z,
resultat;
String xVal,
yVal,
zVal;
xVal =
JOptionPane.showInputDialog ( "Voyez entrer un nombre" );
yVal =
JOptionPane.showInputDialog ( "Voyez entrer un secon nombre");
zVal =
JOptionPane.showInputDialog ( "Voyez entrer un dernier nombre");
x = Integer.parseInt (xVal);
y = Integer.parseInt (yVal);
z = Integer.parseInt (zVal);
resultat = ( x * y * z );

JOptionPane.showMessageDialog (
null, resultat, "Le produit est : ",
JOptionPane.INFORMATION_MESSAGE);
}
}


I have an error on that line : null, resultat, "Le produit est : ",
Why I have an error ?

[crptcblade]

perhaps if you told what error you are getting, it would be easier to tell you why

:)

[DaoK]

method showmessagedialog(null, int, java.lang.string, int) not found in class javax.swing.JOptionPanel.


I added the java.lang.string but that did the same message.

[crptcblade]

That error means that showmessagedialog is not a known method of the JOptionPanel class. I don't have access to my documentation right now, but check the case of the of showmessagedialog, make sure its not supposed to be ShowMessageDialog or something, and make sure you have the arguments in the correct order

:)

[filburt1]

Originally posted by DaoK
method showmessagedialog(null, int, java.lang.string, int) not found in class javax.swing.JOptionPanel.


I added the java.lang.string but that did the same message.

java.lang.String (capital S). And you don't technically need to do java.lang.Whatever, as java.lang.* is automatically imported in all classes.

[Wynd]

I think the second parameter has to be a string.

JOptionPane.showMessageDialog(NULL, resultat.toString(), "Le produit est : ", JOptionPane.INFORMATION_MESSAGE);

[DaoK]

I put ShowMessageDialog with a capital D.
I put import java.lang.String; with capital S

still haev the error.

[Wynd]

Originally posted by filburt1
And you don't technically need to do java.lang.Whatever, as java.lang.* is automatically imported in all classes.

You don't need to include it. By the way, did you try my idea?

[filburt1]

Originally posted by Wynd


You don't need to include it. By the way, did you try my idea?

I just said that.

[DaoK]

resultat.toString()

Didnt work..... I don't know but it seem to be basic code...Why is that so hard to fix :\

[Dillinger4]

I never heard of the JOptionPanel class do you mean JOptionPane?

[Dillinger4]

These are the three you want

public static void showMessageDialog(Component parentComponet, Object Message )

public static void showMessageDialog(Component parentComponet, Object Message, String title, int messageType)


public static void showMessageDialogComponent parentComponet, Object Message, String title, int messageType
Icon icon)

[DaoK]

That my code :


package test2;
import javax.swing.JOptionPane;
public class test2 {
public static void main ( String args [])
{
int x,
y,
z,
resultat;
String xVal,
yVal,
zVal;
xVal =
JOptionPane.showInputDialog ( "Voyez entrer un nombre" );
yVal =
JOptionPane.showInputDialog ( "Voyez entrer un secon nombre");
zVal =
JOptionPane.showInputDialog ( "Voyez entrer un dernier nombre");
x = Integer.parseInt (xVal);
y = Integer.parseInt (yVal);
z = Integer.parseInt (zVal);
resultat = ( x * y * z );

JOptionPane.showMessageDialog (
null, resultat, "Le produit est : ",
JOptionPane.INFORMATION_MESSAGE);
}
}



I didnt wrote panel... ok why he cant read : resultat but he can read x ?

[Wynd]

Originally posted by filburt1


I just said that.
I know, that's why I quoted you :)

[VirtuallyVB]

Yes, the second argument can be an Object of type String, but it takes any type Object as well. Unfortunately, int is not an Object.

Integer.toString(resultat)
is acceptable as is
new Integer(resultat)

JOptionPane.showMessageDialog (
null, Integer.toString(resultat), "Le produit est : ", JOptionPane.INFORMATION_MESSAGE
);

JOptionPane.showMessageDialog (
null, new Integer(resultat), "Le produit est : ", JOptionPane.INFORMATION_MESSAGE
);

The compiler was saying that it cannot find a method for class JOptionPane named showMessageDialog which takes the datatypes that you provided in the order you provided.

I prefer when the compiler says
required: Object
found: int
I'm not certain as to when you get the more descriptive form.

[DaoK]

I put Integer.toString(resultat) before the last JOptionPanel and I have the same error .

[DaoK]

Anyone here have tested the code in his Jbuilder? I need to know why it dont work.

[VirtuallyVB]

It worked fine in notepad and compiled and invoked fine from a Dos shell.

If you keep adding that lower-case "L" to JOptionPane, I'm going to smack you. Just kidding. ;)

Cut and paste this:

import javax.swing.JOptionPane;

public class T {
public static void main ( String args []) {
int x,
y,
z,
resultat;
String xVal,
yVal,
zVal;
xVal = JOptionPane.showInputDialog ( "Voyez entrer un nombre" );
yVal = JOptionPane.showInputDialog ( "Voyez entrer un secon nombre");
zVal = JOptionPane.showInputDialog ( "Voyez entrer un dernier nombre");

x = Integer.parseInt (xVal);
y = Integer.parseInt (yVal);
z = Integer.parseInt (zVal);
resultat = ( x * y * z );

JOptionPane.showMessageDialog (
null, Integer.toString(resultat), "Le produit est : ", JOptionPane.INFORMATION_MESSAGE
);
}
}

[DaoK]

T H A N K you :)

[VirtuallyVB]

You're welcome.

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