If Statements

[scooby316]

Hi all

Is this a legit if statement. It is a button that changes a ball colour from blue to red on a click. And also display the colour in a text field. I have experimented several methods but can't get it to work. test is an int set to 0.

void jButton1_mouseClicked(MouseEvent e) {

if (test < 1)
(aBall.color = (color.red)); test--; jTextField1.setText("Blue");
else
(aBall.color = (color.blue)); test++; jTextField1.setText("Red");
repaint();
}

Cheers

[sjalle]

You enclose statements in parentheses and have no valid use of brackets
in your if statement.

if (test < 1) {
  aBall.color = color.red; 
  test--; 
  jTextField1.setText("Blue");
} else {
  aBall.color = color.blue; 
  test++; 
  jTextField1.setText("Red");
}
repaint();

[scooby316]

Hi sjalle

I get an error about the test variable now. I declared it like this

public static final int test = 0;

Any advice

[sjalle]

public access can only be specified for variables defined at class level
so you cannot define a public variable inside a method.
This goes for static variables too.
If you are not using the variable inside static methods and you have no
need for accessing the variable via the class name like:

int a=AnyClass.aVariable;

the don't use the static either.

final 'variables' are basically the same as the c #define values,
they are final, in other words the value they receive in the define statement:

public final int x=10;

is the only value they can ever get.

So i guess your code will compile if you leave out final. As a rule you should
only define variables as final and/or static if you need the functioonality I
have mentioned above.

Happy reading....

[scooby316]

Got that working, thanks.