How to skip a iteration/loop in while-loop

Question

Is there an elegant way to skip a iteration in while-loop ?

What I want to do is

  while(rs.next())
  {
    if(f.exists() && !f.isDirectory()){
      //then skip the iteration
     }
     else
     {
     //proceed
     }
  }

Why not just have an `if` with `f.isDirectory()`? – Rohit Jain Feb 13 '13 at 14:48 — Rohit Jain, Feb 13 '13 at 14:48

score 62 · Accepted Answer · edited Aug 09 '21 at 02:07

62

`continue`

while(rs.next())
  {
    if(f.exists() && !f.isDirectory())
      continue;  //then skip the iteration
     
     else
     {
     //proceed
     }
  }

edited Aug 09 '21 at 02:07

Basil Bourque

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answered Feb 13 '13 at 14:45

Achintya Jha

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Quetzalcoatl · Answer 2 · 2013-02-13T14:51:50.050

13

While you could use a continue, why not just inverse the logic in your if?

while(rs.next())
{
    if(!f.exists() || f.isDirectory()){
    //proceed
    }
}

You don't even need an else {continue;} as it will continue anyway if the if conditions are not satisfied.

edited Feb 13 '13 at 14:51

answered Feb 13 '13 at 14:46

Quetzalcoatl

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You will need an `||` instead of `&&` there. – Rohit Jain Feb 13 '13 at 14:50
Your inversing of the logic is not correct, you should have OR instead of AND – lbalazscs Feb 13 '13 at 14:50
Oops, good spot guys, will amend that now. – Quetzalcoatl Feb 13 '13 at 14:51

score 9 · Answer 3 · answered Feb 13 '13 at 14:42

Try to add continue; where you want to skip 1 iteration.

Unlike the break keyword, continue does not terminate a loop. Rather, it skips to the next iteration of the loop, and stops executing any further statements in this iteration. This allows us to bypass the rest of the statements in the current sequence, without stopping the next iteration through the loop.

http://www.javacoffeebreak.com/articles/loopyjava/index.html

score 7 · Answer 4 · answered Feb 13 '13 at 14:42

7

You're looking for the continue; statement.

answered Feb 13 '13 at 14:42

SLaks

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score 5 · Answer 5 · answered Feb 13 '13 at 14:43

5

You don't need to skip the iteration, since the rest of it is in the else statement, it will only be executed if the condition is not true.

But if you really need to skip it, you can use the continue; statement.

answered Feb 13 '13 at 14:43

Cyrille Ka

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score 4 · Answer 6 · answered Feb 13 '13 at 14:45

4

while (rs.next())
{
  if (f.exists() && !f.isDirectory())
    continue;

  //proceed
}

answered Feb 13 '13 at 14:45

kol

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How to skip a iteration/loop in while-loop

6 Answers6

`continue`

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