Please help me

[sathishvegeta]

iam new to java and i got an error as

Exception in thread main java.lang.arrayindexoutofboundsexception:0 at Runtime.main<Runtime.java:19>

Program:

class Rectangle
{
int length,breadth;
void Displayvalues(int x,int y)
{
length = x;
breadth = y;
}
int calculate()
{
return(length*breadth);
}
}
public class Runtime
{
public static void main(String[] args)
{
Rectangle rectangle = new Rectangle();
int x = Integer.parseInt(args[0]);
int y = Integer.parseInt(args[1]);
rectangle.Displayvalues(x, y);
System.out.println(" Entered values are X="+x+"and =Y"+y);
int area = rectangle.calculate();
System.out.println(" area of a rectange is : " + area);
}
}
somebody help me...........

[PhHein]

You're running it without providing a parameter list, i.e. String[] args is empty.

EDIT Next time post with a meaningful title and wrap your code with [code] tags

[DarrylBurke]

Forum Rules -- particularly the third paragraph
Guide For New Members
BB Code List - Java Programming Forum - Learn Java Programming

db

[sathishvegeta]

Thanks for the rules

[Fubarable]

Thanks for the rules

Rules that will help others be able to better help you, so yes, you're quite welcome.

[seena]

Statement Integer.parseInt throws ioexception so u should use try and catch
try{
statements
}catch(Exception e){}

[Fubarable]

Statement Integer.parseInt throws ioexception so u should use try and catch
try{
statements
}catch(Exception e){}

• Yes, it would be best to surround this type of parsing with a try/catch
• But you should avoid catching for the overly general Exception, but rather should catch for specific exceptions, here it would be NumberFormatException.
• No, this has nothing to with the original poster's original problem, that of an ArrayIndexOutofBounds exception since this is an exception which shouldn't be caught, since if it occurs it indicates a severe problem with program logic.
• And of course you were going to also recommend that if the OP does catch exceptions, he should never leave the catch block empty as it is in your example above, right?

[DarrylBurke]

Statement Integer.parseInt throws ioexception

No it doesn't.

db

[sathishvegeta]

Statement Integer.parseInt throws ioexception so u should use try and catch
try{
statements
}catch(Exception e){}

Even if i use try Catch i cant enter the input at runtime.. pls guide me briefly

[Fubarable]

Even if i use try Catch i cant enter the input at runtime.. pls guide me briefly

We can best guide if we know what you're doing wrong. Please show your attempt at using this including code posted with code tags, show any errors or exceptions that this code causes, and explain your most current problems with the code.

[tamilarasi]

your String[] args got null values.Do it display the error..
have you try pass some values to x and y it works...
I used scanner for put inputs and i got the area of the particular input it works well for me...
so you will try to put the intputs using scanner

[sathishvegeta]

your String[] args got null values.Do it display the error..
have you try pass some values to x and y it works...
I used scanner for put inputs and i got the area of the particular input it works well for me...
so you will try to put the intputs using scanner

yep... now i got it and it worked thanks for ur info....