Is the Code in the Finally Block Always Executed?

In Java, the finally block is generally guaranteed to execute after a try or catch block, regardless of whether an exception is thrown.

public class TestFinally {
    public static void main(String[] args) {
        try {
            System.out.println("Inside try block");
        } catch(Exception ex){
            ex.printStackTrace();
        }finally {
            System.out.println("Inside finally block");
        }
    }
}

Output :

Inside try block 
Inside finally block

But, there are a few rare cases when the finally block may not execute:

1. System.exit() Call: If System.exit() is called in the try or catch block, it will terminate the JVM immediately, preventing the finally block from executing.

try {
        System.out.println("In try block");
        System.exit(0); // JVM exits, skipping finally
} finally {
        System.out.println("In finally block"); // Won't execute
}

Output :

In try block

2. Runtime.getRuntime().halt()

When encountering the code Runtime.getRuntime().halt() in the try block, it forcibly terminates the running JVM. Unlike the System.exit() method, this method does not trigger the JVM…