anxx0018
asked on
a small question about exception
I am new to Java Programming. I am trying to read from a file, but have the runtime error. Can anybody help me with this? Thank you very much!
Here is my code:
import java.lang.*;
import java.io.*;
class FileHandle {
public static void main() throws Exception {
File srcFile = new File("/tmp_mnt/home/anqian
BufferedReader in = new BufferedReader(new FileReader(srcFile));
String text = in.readLine();
System.out.println(text);
System.out.println(text.le
in.close();
}
}
It can pass the compilation, but has Exception error in runtime. The error is:
Exception in thread "main" java.lang.NoSuchMethodErro
Thank you very much for your help!
Here is my code:
import java.lang.*;
import java.io.*;
class FileHandle {
public static void main() throws Exception {
File srcFile = new File("/tmp_mnt/home/anqian
BufferedReader in = new BufferedReader(new FileReader(srcFile));
String text = in.readLine();
System.out.println(text);
System.out.println(text.le
in.close();
}
}
It can pass the compilation, but has Exception error in runtime. The error is:
Exception in thread "main" java.lang.NoSuchMethodErro
Thank you very much for your help!
bobbit31
public static void main(String[] args)
ASKER
what does this mean?
ASKER
Why does it need "String[] args"?
main() is not the same as main(String[] args).
they're actually different methods, due to polymorphism.
The entry-point to a class *must* be
public static void main(String[] args)
they're actually different methods, due to polymorphism.
The entry-point to a class *must* be
public static void main(String[] args)
and String[] args is just an array of strings specifying any command line parameters (if any) passed in...
ASKER CERTIFIED SOLUTION
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ASKER
---The entry-point to a class *must* be
public static void main(String[] args)
Does it mean whenever there is a new defined class, it is always ..... main (String[] args), even there is no input parameters passed to the main function?
Thank you a lot!
public static void main(String[] args)
Does it mean whenever there is a new defined class, it is always ..... main (String[] args), even there is no input parameters passed to the main function?
Thank you a lot!
> Does it mean whenever there is a new defined class, it is always ..... main (String[] args), even there is no input parameters passed to the main function?
yes
yes
ASKER
Excellently clear anwser! Thank you very much!
ASKER
Thank you very much, bobbit31.
your welcome ;)