Java Programming - Language Fundamentals - Discussion
Discussion Forum : Language Fundamentals - Finding the output (Q.No. 2)
2.
What will be the output of the program?
public class CommandArgs
{
public static void main(String [] args)
{
String s1 = args[1];
String s2 = args[2];
String s3 = args[3];
String s4 = args[4];
System.out.print(" args[2] = " + s2);
}
}
and the command-line invocation is
> java CommandArgs 1 2 3 4
Answer: Option
Explanation:
An exception is thrown because in the code String s4 = args[4];, the array index (the fifth element) is out of bounds. The exception thrown is the cleverly named ArrayIndexOutOfBoundsException.
Discussion:
26 comments Page 1 of 3.
Praveenkumar said:
2 decades ago
Here in the code array size is not given. Then how it will be an exception of ArrayIndexOutOfBoundsException.
Ritesh said:
2 decades ago
So is it by default that a java program can have at the max 4 arguments?
Ananthraj said:
2 decades ago
I am very happy about I am a user of IndiaBIX. I need more explanation.
Sundar said:
1 decade ago
Hi Friends,
The array index always starts with '0' that means args[0].
C\:>java CommandArgs 1 2 3 4
The arguments variable 'args' will hold the elements as given below.
args[0] = 1
args[1] = 2
args[2] = 3
args[3] = 4
But in the program we are trying to get the element at 4th index.
String s4 = args[4]; // due to this line an exception is thrown.
I hope that you are all understand this. Have a nice day!
The array index always starts with '0' that means args[0].
C\:>java CommandArgs 1 2 3 4
The arguments variable 'args' will hold the elements as given below.
args[0] = 1
args[1] = 2
args[2] = 3
args[3] = 4
But in the program we are trying to get the element at 4th index.
String s4 = args[4]; // due to this line an exception is thrown.
I hope that you are all understand this. Have a nice day!
Mahesh said:
1 decade ago
Thanks Sundar.
Prathyusha said:
1 decade ago
Good explanation sundar!..
Anbu said:
1 decade ago
Good explanation mate !
Kiran Gudivada said:
1 decade ago
Very nice explanation and I am searching for these type of questions so if you can possible post more. Thank you.
Srieeta Guptaj said:
1 decade ago
Very nice said. The answer is very clear to me. Thank you.
Jyothi said:
1 decade ago
But
args[0]=CommandArgs
i.e the program name know??
args[0]=CommandArgs
i.e the program name know??
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