Java Exception Handling

How to Fix java.lang.IndexOutOfBoundsException The java.lang.IndexOutOfBoundsException is a runtime exception in Java that occurs when you try to access an index in an array, string, or list that is outside the allowed bounds. This means you’re trying to get an element at an index that either doesn’t exist (negative index) or is greater than or equal to the size of the collection. Understanding the Exception Before diving into solutions, it’s crucial to understand what causes this exception. It signals a programming error where you’re attempting to access data outside the valid range. For example, if you have an array of size 5, valid indices are 0 to 4. Trying to access index -1 or 5 will throw an IndexOutOfBoundsException. ...

How to Fix “java.lang.ExceptionInInitializerError: null” The java.lang.ExceptionInInitializerError is a runtime exception in Java that signals a static initializer block or a static variable initialization threw an exception. The key point is that the exception is often wrapped, and the root cause is often hidden, the “null” that you are seeing is just the message of the exception and doesn’t directly tell you the root cause. In simpler terms, this error means something went wrong when the class was being loaded into memory, specifically during the initialization of static variables or within a static block. Because the error message itself is often vague, debugging this exception can be tricky. This article guides you through the common causes and provides solutions to resolve the java.lang.ExceptionInInitializerError: null. ...