Under what conditions will the finally block not be called during program execution?

The finally block in Java is usually executed after the try and catch blocks, regardless of whether an exception was thrown or not. However, there are exceptions when finally will not be called:

• If the JVM terminates abruptly during the execution of the try or catch block (for example, calling System.exit() or a critical JVM error).
• If the thread executing the code is interrupted or killed before reaching the finally block.
• If an infinite loop occurs in the try or catch block, or the program hangs, preventing execution from reaching finally.

Example with System.exit():

try {
    System.exit(0);
} finally {
    System.out.println("This code will not be executed");
}

In this example, finally will not be executed because the JVM will terminate immediately.