What causes a java Lang ArrayIndexOutOfBoundsException and how do I prevent it?

In order to avoid the java. lang. ArrayIndexOutOfBoundsException, you should always do the bound check before accessing array element e.g. Always remember that the array index starts at 0 and not 1 and an empty array has no element in it.

How do you handle java Lang ArrayIndexOutOfBoundsException?

How to handle Java Array Index Out of Bounds Exception?

  1. Example. import java.
  2. Output. Elements in the array are:: [897, 56, 78, 90, 12, 123, 75] Enter the index of the required element :: 7 Exception in thread “main” java.lang.ArrayIndexOutOfBoundsException: 7 at AIOBSample.main(AIOBSample.java:12)
  3. Handling the exception.

What is ArrayIndexOutOfBoundsException in java?

ArrayIndexOutOfBoundsException occurs when we access an array, or a Collection, that is backed by an array with an invalid index. This means that the index is either less than zero or greater than or equal to the size of the array. Additionally, bound checking happens at runtime.

Why do I get ArrayIndexOutOfBoundsException?

Why do I get ArrayIndexOutOfBoundsException in Java? The ArrayIndexOutOfBoundsException exception is thrown to indicate that an array has been accessed with an illegal index. The index is either negative or greater than or equal to the size of the array.

Is ArrayIndexOutOfBoundsException a checked exception?

ArrayIndexOutofBoundsException is an unchecked exception. Therefore, the java compiler will not check if a given block of code throws it.

What causes null pointer exception in Java?

What Causes NullPointerException. The NullPointerException occurs due to a situation in application code where an uninitialized object is attempted to be accessed or modified. Essentially, this means the object reference does not point anywhere and has a null value.

How do you handle null pointer exception in Java?

In Java, the java. lang. NullPointerException is thrown when a reference variable is accessed (or de-referenced) and is not pointing to any object. This error can be resolved by using a try-catch block or an if-else condition to check if a reference variable is null before dereferencing it.

How do you handle null exception in Java?

Is IllegalArgumentException checked or unchecked?

Some common unchecked exceptions in Java are NullPointerException, ArrayIndexOutOfBoundsException and IllegalArgumentException.

How do I fix NullPointerException?