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Commit d0072e0

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Merge pull request giantray#17 from nitta-honoka/master
Java 中的 finally 是否总会执行?
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##问题
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有一个 try/catch 代码块,其中包含一个打印语句。finally代码块总会被执行么?
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示例:
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``` java
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try {
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something();
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return success;
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}
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catch (Exception e) {
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return failure;
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}
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finally {
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System.out.println("i don't know if this will get printed out.");
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}
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```
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##回答
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1. ```finally``` 将会被调用。
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只有以下情况 ```finally``` 不会被调用:
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- 当你使用 ```System.exit()``` 后
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- 其他线程干扰了现在运行的线程(通过 ```interrupt``` 方法)
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- 如果 JVM 已经"撞毁"了
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Answered by [Jodonnell](http://stackoverflow.com/users/4223/jodonnell), edited by [jpaugh](http://stackoverflow.com/users/712526/jpaugh).
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2. //示例代码
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``` java
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class Test
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{
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public static void main(String args[])
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{
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System.out.println(Test.test());
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}
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public static int test()
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{
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try {
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return 0;
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}
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finally {
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System.out.println("finally trumps return.");
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}
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}
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}
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```
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输出:
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``` java
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finally trumps return.
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0
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```
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Answered by [Kevin](http://stackoverflow.com/users/1058366/kevin)
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---
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原文链接:http://stackoverflow.com/questions/65035/does-finally-always-execute-in-java?page=1&tab=votes#tab-top

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