How can I put some code into try capture blocks so that the JVM does not perform optimization?

Question

How can I put some code into try capture blocks so that the JVM does not perform optimization?

In the Exceptions chapter in Effective Java:

Placing code inside a try-catch block blocks certain optimizations that otherwise JVM implementations might perform

Why and how does a try-catch block prevent JVM optimization?

+5

java try-catch effective-java

Geek Jul 19 '12 at 9:26

source share

3 answers

JVM try/catch , try/catch. . , JVM, , , , .

+5

Peter Lawrey 19 . '12 9:32

:

Java?

I think exceptions are Java objects, and these objects need to be created. Creating an object is an expensive operation. Therefore, use exceptions only for error handling and not for flow control.

-1

kostas Jul 19 '12 at 10:00

source share

Stephen C · Accepted Answer · 2012-07-19T11:49:45+0000

"" , ; , . , , JIT , .

JIT , . :

, , ,
( Oracle) , ( /), .

, . , ( ) , . , , , (, , ,...) .

How can I put some code into try capture blocks so that the JVM does not perform optimization?

More articles: