What is the limited range of finally statement blocks?
This article mainly explains "what is the limited scope of finally sentence blocks". The content of the explanation is simple and clear, and it is easy to learn and understand. Please follow the editor's train of thought to study and learn "what is the limited scope of finally sentence blocks".
Does the finally statement block have to be executed?
The answer is not necessarily.
Returns directly to the block of finally statements that are not executed
Throwing exception is not executed to finally statement block
System exit not executed to finally statement block
...
There are many special cases that cause finally statement blocks not to be executed.
The code is as follows
Public static String test () {
String str = null
Int I = 0
If (I = = 0) {
Return str;// directly returns unexecuted to finally statement block
}
Try {
System.out.println ("try...")
Return str
} finally {
System.out.println ("finally...")
}
}
Public static String test2 () {
String str = null
Int I = 0
I = I / 0ram / throw exception not executed to finally statement block
Try {
System.out.println ("try...")
Return str
} finally {
System.out.println ("finally...")
}
}
Public static String test3 () {
String str = null
Try {
System.out.println ("try...")
System.exit (0); / / system exit not executed to finally statement block
Return str
} finally {
System.out.println ("finally...")
}
}
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