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Recursive file listing in java

 
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May someone explain about for loop?
 
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Enhanced for loop

http://download.oracle.com/javase/tutorial/java/nutsandbolts/for.html
 
abalfazl hossein
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What is the advantage of using this for?
 
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abalfazl hossein wrote:What is the advantage of using this for?


1. Easy to use : you don't need to cast, you don't need a counter, you don't need an iterator...
2. Easy to read
 
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1. Easy to use : you don't need to cast, you don't need a counter, you don't need an iterator...



and faster?
 
Christophe Verré
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abalfazl hossein wrote:and faster?


Which one will execute Faster Enhanced for loop or For loop?
 
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Were you actually asking about the syntax of the enhanced for loop, or are you asking a question about recursion?

Note that in line 7, the method is calling itself - that's recursion.
 
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abalfazl hossein wrote:


One warning: even though f is a directory listFiles() can still return null, if you don't have the rights to read the folder contents. A few system folders (like those for system restore) can never be read. If you don't check for null the for-loop will cause a NullPointerException.
 
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abalfazl hossein wrote: . . . and faster?

Why on earth are you worrying about speed of execution at this stage?
 
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