try catch in swing.

[ashin]

anyone would like to help me how to declare an exception in swing?
just give me an example code.. i am using netbeans... tnx

[PhHein]

It's the same as in AWT or any other piece of code. What's the problem? What part of the tutorials didn't you understand?

[programmer_007]

try { //put ur code that is supposed to thrw exception }
catch (Exception e) //u can specify name of exception in place of "Exception" if u know, <or u can see wen u run without try n catch>
{[
System.out.println("exception"+e);
}

[PhHein]

System.out.println("exception"+e);
}

Never ever do that! Print the stack trace.

[programmer_007]

yeah man .. correct ..but for the beginers sake ... can start this way ..

but its always good to go 4 STACK Trace..

[r035198x]

...but for the beginers sake ... can start this way ..

...

Bad advice.

[ashin]

hi to everyone.. tnx... my problem is when i put a string in the jtextfield still my System.out.println("error") didnt show ....this is my code:

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


java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new OddEven().setVisible(true);
}
});
}
catch(Exception e){
System.out.println("error");


}

i am using the netbeans editor

[ashin]

this is my error... i already code the try catch but still the same output... the error message didnt show when i put a string in the textfield

[r035198x]

If you want there to be an error printed to the console when someone enters text into a textfield then your code is way off what you want to do. Where are you checking the text entered on the textfield?
You would need to register an appropriate listener on the textfield and do the printing in the listener's handler method.

[ashin]

you mean , i have to code for the handler listener for textfield??

[r035198x]

Depends on when you want to check the value in the textfield. I assumed it'll be the listener for the textfield because you said "when i put a string in the jtextfield still my System.out.println("error") didnt show".