unreported IOException problem

[doha786]

hi,

i am trying to call one method from different file but getting this error..

callMethod.java:31: unreported exception java.io.IOException; must be caught or declared to be thrown

i already reported this exception in that method but cant understand where else need to report ?

public class callMethod extends JFrame implements ActionListener {
JButton button;

callMethod(){
button=new JButton("show");  button.addActionListener(this);

add(button); 
}


public static void main(String[] args) throws IOException  {
		callMethod cm=new callMethod();
		cm.setSize(200,100);
		cm.setVisible(true);
		}


public void actionPerformed (ActionEvent e) {
if (e.getSource()==button) {

MyFile file=new MyFile();
String[][] show=file.method("get", "20"); //error mentioned in this line
..
..
}
}

the method of MyFile:

public String[][] method(String name, String value) throws IOException {
...
..

i can run it from MyFile but cant call from different file...

pls help me...

[iluxa]

public void actionPerformed (ActionEvent e)

cannot throw an IOException. Even if you add is as

public void actionPerformed (ActionEvent e)  throws IOException

it will complain (although differently).

do this:

public void actionPerformed (ActionEvent e)  {
  try {
    // execute IOException-throwing stuff
  } catch (IOException ex) {
    // do something with it: ex.printStackTrace(), or throw a runtime exception, or simply ignore it.
  }
}

[Fubarable]

public void actionPerformed (ActionEvent e) {
   if (e.getSource()==button) {

      MyFile file=new MyFile();
      String[][] show=file.method("get", "20"); //error mentioned in this line
      ..
      ..
   }
}

the method, "method" throws the exception but your actionPerformed method calls this method and doesn't do anything with the exception. I recommend you do what the error is in essence telling you to do: put the method call in the actionPerformed in a try/catch block.

public void actionPerformed (ActionEvent e) {
   if (e.getSource()==button) {

      MyFile file=new MyFile();
      try {
         String[][] show=file.method("get", "20");
      }
      catch (IOException ioe) {
         ioe.printStackTrace();  // or whatever else may need to be done if file not found
      }
      
      ..
      ..
   }
}

[doha786]

great great thanks........


really appreciate you....

Why i cant add reputation for you Fubarable??
its showing message "you must spread some reputation around................"

[Fubarable]

You've need to give to others before you can give to me. Not to worry though, it's the thought that counts.

[doha786]

oh..ok

anyway thanks a lot.. you made me smile :)