Index Out of Bound Exception
Index Out of Bound Exception are the Unchecked Exception that occurs at
run-time errors. This arises because of invalid parameter passed to a
method in a code. The java Compiler does not check the error during the
compilation of a program. Index Out of Bound Exception Occurs when a
programmer try to access an element of beyond the storage capacity of the
index.
Index Out of Bound Exception are further classified into two types-
1.Array Index Out of Bound Exception-These are the exception arises when a
programmer tries to access an element beyond the capacity of index of the array. This
exception are seen at run-time rather than the compile time. This causes the
program to crash at run-time.Inorder to overcome this problem, you write the
exceptional -handler that process the program. Now place the code in try block
that cause exception in program. If exception arises in try block, you pass the
control to the specific catch block preceding try block If there is no catch block, the
program will terminated.
How to Handle Array Out of Bound Exception
The below example define a class 'Example', that shows
out-of-bounds exception when
you attempt to access an element of array with an illegal subscript. . To
avoid this condition, you can write an exception handler that processes
the exception and keeps your program running. Place the code that cause the
exception in the try block. If there is an exception in the try
block, transfer the control to the catch block. If there is no catch block the
program will terminate.
public class Example
{
public static void main( String args [] )
{
int value;
try
{
int array[] = { 6, 16, 26,36,46,56,66,76 };
int index = 8;
value = array[ index ];
System.out.println("Execution does not reach here if there is a invalid index.");
}
catch( ArrayIndexOutOfBoundsException e )
{
System.out.println( "Valid indexes are 0, 1,2,3, 4,5,6 or 7" );
}
System.out.println( "End of program" );
}
}
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Output on the Command Prompt.
C:\saurabh>javac Example.java
C:\saurabh>java Example
Valid indexes are 0, 1,2,3,4,5,6 or 7
End of program
|
2.String Index Out of Bound Exception- The String Index Out of Bound
Exception is a subclass of Index out of Bound Exception. This exception is
thrown when a String object detects an
index out-of-range index. Usually, An string object occurs out-of-range ,
when the index is less than zero, or greater than or equal to the length of the
string.
How to declare String Index Out of Bound Exception
public String Index Out of
Bound Exception()
The above Constructor creates an string Index Out of Bounds Exception with no
message associated with it.
public String Index Out of Bound Exception(int index)
The above Constructor creates an StringIndexOutOfBoundsException
class with an argument indicates the illegal index associated with it.
Inherited Method
Some of the Inherited Method
|
Method |
Inherited
Method |
Inherited
Form |
| fillinStackTrace( ) |
Throwable Finalize (
) |
Object |
| get
Class |
Object get Localized
Message |
Throwable |
| get
message |
Throwable Hashcode |
Object |
| print stack trace (
) |
Throwable print stack trace (
) |
Throwable |
|
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