Coding beginner learning (Java)

As a beginner in Java coding, I often encounter errors like runtime exceptions that leave me puzzled. For instance, I recently faced a java.lang.ArrayIndexOutOfBoundsException error. I'm seeking comprehensive assistance in two aspects: pinpointing the bugs in my code and understanding the explanations behind error messages. I'm looking for clear and beginner-friendly explanations that can help me improve my coding skills and debugging abilities.