import javax.swing.JOptionPane;
public class WelcomeInMessageDialogBox{
public static void main(String[] args){
JOptionPane.ShowMessageDialog(null,"Welcome to Java!");
}
}
Why it reported that in line 5 cannot find symbol?
import javax.swing.JOptionPane;
public class WelcomeInMessageDialogBox{
public static void main(String[] args){
JOptionPane.ShowMessageDialog(null,"Welcome to Java!");
}
}
Why it reported that in line 5 cannot find symbol?