jvm“在Java虚拟机运行期间”的定义是什么？

Question

从JVMS chapter 6.3：

[...] any of the VirtualMachineError subclasses defined below [InternalError, OutOfMemoryError, StackOverflowError, UnknownError] may be thrown at any time during the operation of the Java Virtual Machine

JVM如何定义短语“在Java虚拟机运行期间的任何时候”

当前的JVM如何解释这个短语

具体来说，这是否意味着四个错误，^{}、^{}、^{}和^{}可能会在语句之间抛出：

// ....
A(); B(); C();
try {
     // nothing
} catch (InternalError | OutOfMemoryError | StackOverflowError | UnknownError e) {
     // may occur?
}
D(); E(); F();
try {
     ; // semi-colon
} catch (InternalError | OutOfMemoryError | StackOverflowError | UnknownError e) {
     // may occur?
}
G(); H(); I();
try {
     ; ; ;;  ;;;;; ; ; ;;; ;; ;; ;; ;; ; ;; ; ;; // ... semi-colons
} catch (InternalError | OutOfMemoryError | StackOverflowError | UnknownError e) {
     // may occur?
}
J(); K(); L();
// ....

Answer 1

Java虚拟机由许多部分组成。例如，垃圾收集器作为持久后台运行Thread。它可能会抛出其中一个Exception，并且它肯定会在任何时间出现（特别是如果您自己的代码由于gc而停止）

从Java Garbage Collection Basics

What is Automatic Garbage Collection?

Automatic garbage collection is the process of looking at heap memory, identifying which objects are in use and which are not, and deleting the unused objects. An in use object, or a referenced object, means that some part of your program still maintains a pointer to that object. An unused object, or unreferenced object, is no longer referenced by any part of your program. So the memory used by an unreferenced object can be reclaimed.

tl；dr

对。它们可以在语句之间抛出