// Catch exceptions for array index out of bounds // or dividing by 0 import jav

Question

// Catch exceptions for array index out of bounds
// or dividing by 0
import javax.swing.*;
public class DebugTwelve3
{
public static void main(String[] args)
{
String inStr;
int num, result;
int[] array = {12, 4, 6, 8};
inStr = JOptionPane.showInputDialog(null, "Enter a number ");
num = Integer.parse(inStr);
try
{
for(int x = 0; x < array.length; ++x)
{
result = array[x] / num;
JOptionPane.showMessageDialog(null, "Result of division is " + result);
result = array[num];
JOptionPane.showMessageDialog(null, "Result accessing array is " + result);
}
}
catch(ArithmeticException error)
{
JOptionPane.showMessageDialog(null, "Arithmetic error - division by 0");   
}
catch(IndexException error)
{
JOptionPane.showMessageDialog(null, "Index error - subscript out of range");
}
}
}

Explanation / Answer

Hi,

Addded ArrayIndexOutOfBounds catch bloack and highlighted the code changes below.

DebugTwelve3.java

import javax.swing.*;
public class DebugTwelve3
{
public static void main(String[] args)
{
String inStr;
int num, result;
int[] array = {12, 4, 6, 8};
inStr = JOptionPane.showInputDialog(null, "Enter a number ");
num = Integer.parseInt(inStr);
try
{
for(int x = 0; x < array.length; ++x)
{
result = array[x] / num;
JOptionPane.showMessageDialog(null, "Result of division is " + result);
result = array[num];
JOptionPane.showMessageDialog(null, "Result accessing array is " + result);
}
}
catch(ArithmeticException error)
{
JOptionPane.showMessageDialog(null, "Arithmetic error - division by 0");   
}
catch(ArrayIndexOutOfBoundsException error)
{
JOptionPane.showMessageDialog(null, "Index error - subscript out of range");
}
}
}

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