Java Coding         Mistakes That Can         Lead to Runtime Errors

10

Accessing or manipulating an object reference that is null, leading to a NullPointerException at runtime.

1

Null Pointer Dereference

Take Scaler's Free MasterClasses to Improve your  Java Coding Skills!

Attempting to access an array element using an index that is outside the valid range, causing an ArrayIndexOutOfBoundsException.

Array Index Out of Bounds

2

Take Scaler's Free MasterClasses to Improve your  Java Coding Skills!

Recursive method or function lacking a base case, resulting in a stack overflow and runtime error.

Infinite Recursion

3

Take Scaler's Free MasterClasses to Improve your  Java Coding Skills!

ClassCastException

Incorrectly casting an object to a class that it is not an instance of, triggering a ClassCastException during runtime.

4

Take Scaler's Free MasterClasses to Improve your  Java Coding Skills!

Performing a division operation where the divisor is zero, causing an ArithmeticException at runtime.

Division by Zero

5

Take Scaler's Free MasterClasses to Improve your  Java Coding Skills!

Resource Leak

Failing to close resources like files or connections after use, leading to resource exhaustion and potential runtime errors.

6

Take Scaler's Free MasterClasses to Improve your  Java Coding Skills!

Modifying a collection (e.g., List) while iterating over it concurrently, resulting in a ConcurrentModificationException.

Concurrent Modification

7

Take Scaler's Free MasterClasses to Improve your  Java Coding Skills!

Inconsistent use of synchronization mechanisms, leading to race conditions and potential runtime errors in multithreaded environments.

Mismatched Synchronization

8

Take Scaler's Free MasterClasses to Improve your  Java Coding Skills!

Inconsistent Exception Handling

Handling exceptions inappropriately, such as catching a broader exception type than necessary, masking potential issues during runtime.

9

Take Scaler's Free MasterClasses to Improve your  Java Coding Skills!

Take Scaler's Free MasterClasses to Improve your  Java Coding Skills!

String Concatenation in Loops

Concatenating strings inside a loop without using StringBuilder can lead to inefficient code due to the immutable nature of strings in Java, causing performance issues at runtime.

10

Improve your  Java Coding Skills with Scaler!

Sign up for Scaler's free masterclasses and events to learn about the latest trends in the IT industry and become a pro.  Don't hesitate any longer, register today!