Exception Handling in Java

[Ajay Bhalala]

Hello,

I have create the program for exception handling using nested try in java

Here is my program :

class nestedtry
{
    public static void main(String args[])
    {
        try
        {
            int a,b;
            a=5;
            b=0;
            try
            {
                int a[];
                a=new int[3];
                for(int i=0;i<=4;i++)
                {
                    a[i]=10;
                }
            }
            catch(ArrayIndexOutOfBoundsException e)
            {
                System.out.print("Array " + e);
            }
        }
        catch(ArithmeticException e)
        {
            System.out.print(e);
        }
        System.out.print("From main");
    }
}
 

There is error occurred in this program...

Error :

23.java:12: a is already defined in main(java.lang.String[])
                                int a[];
                                    ^
1 error
 

What will be the correction in my program for solve the error????

[chaarmann]

Look at line 7 and 12. You have defined a simple int "a" and an int array "a[]". You cannot give the same name here. The problem is if the compiler would allow it, then it cannot read your mind which of the both to print if you typed

"System.out.println("int or array: value=" + a);"

The variable int a is also visible in the inner block (your inner try block), but it is not visible outside of its own block (your outer try block)