What is the advantage of a do-while(false)?

Question

When looking through some code that was handled by another employee, I see a lot of code written in:

do{     ... }while(false); 

What advantage (if any) does this provide?

Here is more of a skeleton that is happening in the code:

try{     do{         // Set some variables          for(...) {             if(...) break;             // Do some more stuff             if(...) break;             // Do some more stuff         }     }while(false); }catch(Exception e) {      // Exception handling  } 

Update:

C++ Version:
Are do-while-false loops common?

Answer 1

Maybe it was done to be able to jump out of the "loop" at any time, e.g:

do {     ...     if (somethingIsWrong) break;     //more code     ... } while(false); 

But as others have said, I wouldn't do it like this.

Answer 2

In Java, there is no reason to do this.

In C, this is a common idiom when defining macros:

Consider:

#define macro1 doStuff(); doOtherStuff() #define macro2 do{ doStuff(); doOtherStuff(); } while( false )  if( something ) macro1; // only the first statement in macro1 is executed conditionally if( something ) macro2; // does what it looks like it does 

...but macros in C are evil and should be avoided if at all possible.

Does your coworker come from a C background?