exception in thread main java.lang.arrayindexoutofboundsexception 0

[sudhap]

Hi,

i am getting the" exception in thread main java.lang.arrayindexoutofboundsexception 0 " error when i execute the program.

Can some one please help me to resolve it?

here is my program.

class InvertTriangle{

public static void main(String args[]){

int num = Integer.parseInt(args[0]);

while(num > 0){

for(int j=1;j<=num;j++){

System.out.print(" "+num+" ");

}

System.out.print("\n");

num--;

}

}

}

[mwr1976]

You need to look at the syntax of your code. You have some problems, pretty basic, but totally incorrect. Start here:The Java™ Tutorials

[DarrylBurke]

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[Norm]

You need to check if the array: args is empty before trying to get at its contents.

[sudhap]

I am sorry i did not understand what you are telling as i am new to java.
can you please correct my code and tell where i did a mistake?

Thanks,

[Norm]

Did Find the code where the exception occurs? Please copy the statement here if you have questions about it.
What array is used in that statement?
Test the length of the array using the .length attribute to see if the array is empty: length > 0.
If the length is 0 do not try to get any elements from the array. Use an if statement to test and skip using the array if it is empty.