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Author Topic: What am i doing wrong here?  (Read 4648 times)

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Offline Broseph Radson

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What am i doing wrong here?
« on: September 16, 2011, 06:27:05 pm »
Ive tried compiling a program on 2 different computers using this code:
Code: (java) [Select]
button1.setBounds(5, 5, 100, 60);
button2.setBounds(5, 60, 100, 60);

on one computer it says "symbol not found" on setBounds (ofc i have awt.* and swing.* included)

on the other it says "illegal start of type" on the the first arg, and "<identifier> expected" after setBounds

???

Also, when i try to define an array, it keeps telling me that i need 2 closing brackets and that i need a semicolon inside the brackets...
???
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Offline Builderboy

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Re: What am i doing wrong here?
« Reply #1 on: September 16, 2011, 06:33:31 pm »
It would help to see more of the code, like where you declared the buttons, and where you are trying to create the arrays.  What type of object are the buttons?
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Offline Broseph Radson

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Re: What am i doing wrong here?
« Reply #2 on: September 16, 2011, 07:12:09 pm »
Code: (moar java) [Select]
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;

class herp extends JFrame {

JButton button1 = new JButton("Derp");
JButton button2 = new JButton("Lolwut");
button1.setBounds(5, 5, 100, 60);
button2.setBounds(5, 60, 100, 60);

public herp() {
super("Window");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
add(button1);
add(button2);
pack();
}
}

class window {
public static void main(String[] args) {
herp hai = new herp();
hai.setVisible(true);
}
}

And the arrays are in here:
Code: (arrayzz) [Select]
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;

class map extends JPanel {
int mapMatrix[][] = new int[15][10];


String tiles[] = new String[2];


map() {
this.setBounds(0, 25, 960, 640);
for(int x = 0; x < 15; x++) {
for(int y = 0; y < 10; y++) {
ImageIcon tile = new ImageIcon(tiles[mapMatrix[x][y]]);
tile.setBounds(((x + 1) * 64), ((y + 1) * 64), 64, 64);
this.add(tile);
tile.setVisible(true);
this.setVisible(true);
}
}
}
}

There may be other errors but im concerned with why javac is telling me to put extra closing brackets and stuff.

EDIT: i just compiled that second one on this computer and its giving me different errors. using the same version of jdk...

Maybe im just dreaming...nothing is making any kind of sense.
« Last Edit: September 16, 2011, 07:15:48 pm by Broseph Radson »
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Offline Builderboy

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Re: What am i doing wrong here?
« Reply #3 on: September 16, 2011, 07:16:29 pm »
The syntax for an array is int[] array = new int[5], not int array[] = new int[5]. 

The second issue is that you cannot do commands outside of a method, so you will need to move the two button.setBounds into the constructor or wherever you want them
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Offline Broseph Radson

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Re: What am i doing wrong here?
« Reply #4 on: September 16, 2011, 07:21:39 pm »
Ah, ive seen arrays defined both ways before. I guess i was reading in the wrong places  :D

I think my computer at school is just messed up as this computer doesnt give me any of those errors...
I had like 57 errors on a tiny program, on this computer it only gave me 4...

Thanks, though!

« Last Edit: September 16, 2011, 07:24:28 pm by Broseph Radson »
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Offline Builderboy

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Re: What am i doing wrong here?
« Reply #5 on: September 16, 2011, 07:22:14 pm »
No problem!  You might have been seeing some C++ code, as I think thats how they define arrays o.O
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Offline Broseph Radson

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Re: What am i doing wrong here?
« Reply #6 on: September 16, 2011, 07:24:44 pm »
Another issue: The second one says "cannot find symbol" on setBounds, add, and setVisible. All are within a method.
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Offline JL235

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Re: What am i doing wrong here?
« Reply #7 on: September 16, 2011, 08:04:48 pm »
Quote from: Broseph Radson on September 16, 2011, 07:24:44 pm
Another issue: The second one says "cannot find symbol" on setBounds, add, and setVisible. All are within a method.
Your calling those methods on the 'tile' object, which is an ImageIcon, and doesn't have those methods. In the compiler error...
Code: [Select]
map.java:19: cannot find symbol
symbol  : method setVisible(boolean)
location: class javax.swing.ImageIcon
                                tile.setVisible(true);
... where it says 'location', that is what tells you that it is failing to find 'setVisible' in the 'javax.swing.ImageIcon' class. You also cannot add an ImageIcon directly to a JPanel.

A third thing, it's convention to start class names with a capital letter. Notice this is the case with 'JPanel' and 'ImageIcon', so I heavily advise you call your class 'Map' rather then 'map'.
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Offline Broseph Radson

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Re: What am i doing wrong here?
« Reply #8 on: September 19, 2011, 03:38:50 pm »
Got it working!

I was using icons when i shouldve been using awt.Graphics and awt.Graphics2D

 :w00t:
« Last Edit: September 23, 2011, 03:29:37 pm by Broseph Radson »
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