[Java Interview] How to make the interviewer feel good in the interview? After reading this interview question, will the finally block be executed?

"Does the finally block always execute?"

This is a problem that a friend who has worked for 3 years recently encountered when he went for an interview.

How would you answer this question?

Hello everyone, I'm Mic, a Java programmer who has been working for 14 years

What is the interviewer looking for in this question?

Problem Analysis

This question, obviously, is to examine the basics of Java.

The finally statement block is used a lot in actual development, it is used in combination with the try statement block.

Under normal circumstances, the code in the finally statement block is bound to be executed regardless of whether an exception is triggered, so we put the release of resources or the printing of business logs in the finally statement block.

Therefore, when people regard this concept as a fixed formula, they rarely think about when the finally statement block is not executed.

This is also the reason why many job seekers are stumped, so I think this question mainly examines two aspects:

• The understanding of the finally keyword is actually to examine the Java foundation. A good Java foundation can write more stable and robust code.
• Whether they have the spirit of exploring technology, such people will grow faster than the average person in terms of technology

Expert:

The finally block is not executed in two cases:

• The program does not enter the try statement block because the program terminates due to an exception. This problem is mainly due to the insufficient scope of exception capture when developers write code.
• In the try or cache statement block, the System.exit(0) statement is executed, causing the JVM to exit directly

Summarize

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