try-catch-finally
public class Main {
public static void main(String[] args) {
System.out.println("返回："WithException());
}
public static int WithException() {
int i = 10;
try {
System.out.println("i in try block is ： " + i);
i = i / 0;
return --i;
} catch (Exception e) {
System.out.println("i in catch - form try block is ： " + i);
--i;
System.out.println("i in catch block is ： " + i);
return --i;
} finally {
System.out.println("i in finally - from try or catch block is--" + i);
--i;
System.out.println("i in finally block is--" + i);
return --i;
}
}
}输出：
i in try block is ： 10
i in catch - form try block is ： 10
i in catch block is ： 9
i in finally - from try or catch block is--8
i in finally block is--7
返回：6如果改为下面（最后的return语句）：
public class Main {
public static void main(String[] args) {
System.out.println(WithException());
}
public static int WithException() {
int i = 10;
try {
System.out.println("i in try block is ： " + i);
i = i / 0;
return --i;
} catch (Exception e) {
System.out.println("i in catch - form try block is ： " + i);
--i;
System.out.println("i in catch block is ： " + i);
return --i;
} finally {
System.out.println("i in finally - from try or catch block is--" + i);
--i;
System.out.println("i in finally block is--" + i);
// return --i;
}
}
}输出：
i in try block is ： 10
i in catch - form try block is ： 10
i in catch block is ： 9
i in finally - from try or catch block is--8
i in finally block is--7
返回：8总结： 1、finally语句中没有return时，执行完try或catch语句的return之后还会执行finally。（而return的值会暂存在栈里面，等待finally执行后再返回） 2、finally语句中有return时，依然会执行try或catch语句的return，但是最终返回的是finally语句中的return。
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原始发表：2016-08-02，如有侵权请联系 cloudcommunity@tencent.com 删除
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