What is the continue keyword and how does it work in Java

Question

I saw this keyword for the first time and I was wondering if someone could explain to me what it does    What is the continue keyword  How does it work  When is it used

User · Answer

Consider an If Else condition  A continue statement executes what is there in a condition and gets out of the condition i e  jumps to next iteration or condition  But a Break leaves the loop   Consider the following Program         public class ContinueBreak       public static void main String   args            String   table   aa   bb   cc   dd            for String ss table               if  bb  equals ss                    continue                            System out println ss               if  cc  equals ss                    break                                  System out println  Out of the loop                It will print  aa cc Out of the loop    If you use break in place of continue After if    it will just print aa and out of the loop    If the condition  bb  equals ss is satisfied   For Continue  It goes to next iteration i e   cc  equals ss   For Break  It comes out of the loop and prints  Out of the loop

User · Answer

continue is kind of like goto  Are you familiar with break  It s easier to think about them in contrast    break terminates the loop  jumps to the code below it   continue terminates the rest of the processing of the code within the loop for the current iteration  but continues the loop

User · Answer

continue  in Java means go to end of the current loop  means  if the compiler sees continue in a loop it will go to the next iteration   Example  This is a code to print the odd numbers from 1 to 10   the compiler will ignore the print code whenever it sees continue moving into the next iteration  for  int i   0  i  lt  10  i           if  i 2    0  continue          System out println i

User · Answer

Generally  I see continue  and break  as a warning that the code might use some refactoring  especially if the while or for loop declaration isn t immediately in sight  The same is true for return in the middle of a method  but for a slightly different reason   As others have already said  continue moves along to the next iteration of the loop  while break moves out of the enclosing loop   These can be maintenance timebombs because there is no immediate link between the continue break and the loop it is continuing breaking other than context  add an inner loop or move the  guts  of the loop into a separate method and you have a hidden effect of the continue break failing   IMHO  it s best to use them as a measure of last resort  and then to make sure their use is grouped together tightly at the start or end of the loop so that the next developer can  see the  bounds  of the loop in one screen   continue  break  and return  other than the One True Return at the end of your method  all fall into the general category of  hidden GOTOs   They place loop and function control in unexpected places  which then eventually causes bugs

User · Answer

Continue is a keyword in Java  amp  it is used to skip the current iteration   Suppose you want to print all odd numbers from 1 to 100   public class Main        public static void main String args             Program to print all odd numbers from 1 to 100          for int i 1   i lt  100   i                  if i   2    0                    continue                            System out println i                        continue statement in the above program simply skips the iteration when i is even and prints the value of i when it is odd   Continue statement simply takes you out of the loop without executing the remaining statements inside the loop and triggers the next iteration

User · Answer

Let s see an example   int sum   0  for int i   1  i  lt   100   i         if i   2    0           continue      sum    i      This would get the sum of only odd numbers from 1 to 100

User · Answer

If you think of the body of a loop as a subroutine  continue is sort of like return  The same keyword exists in C  and serves the same purpose  Here s a contrived example   for int i 0  i  lt  10    i      if  i   2    0        continue        System out println i       This will print out only the odd numbers

User · Answer

If you think of the body of a loop as a subroutine  continue is sort of like return  The same keyword exists in C  and serves the same purpose  Here s a contrived example   for int i 0  i  lt  10    i      if  i   2    0        continue        System out println i       This will print out only the odd numbers

User · Answer

continue is kind of like goto  Are you familiar with break  It s easier to think about them in contrast    break terminates the loop  jumps to the code below it   continue terminates the rest of the processing of the code within the loop for the current iteration  but continues the loop

User · Answer

continue  in Java means go to end of the current loop  means  if the compiler sees continue in a loop it will go to the next iteration   Example  This is a code to print the odd numbers from 1 to 10   the compiler will ignore the print code whenever it sees continue moving into the next iteration  for  int i   0  i  lt  10  i           if  i 2    0  continue          System out println i

User · Answer

continue must be inside a loop Otherwise it showsThe error below      Continue outside the loop

User · Answer

Basically in java  continue is a statement  So continue statement is normally used with the loops to skip the current iteration   For how and when it is used in java  refer link below  It has got explanation with example   https   www flowerbrackets com continue-java-example   Hope it helps

User · Answer

If you think of the body of a loop as a subroutine  continue is sort of like return  The same keyword exists in C  and serves the same purpose  Here s a contrived example   for int i 0  i  lt  10    i      if  i   2    0        continue        System out println i       This will print out only the odd numbers

User · Answer

A continue statement without a label will re-execute from the condition the innermost while or do loop  and from the update expression of the innermost for loop    It is often used to early-terminate a loop s processing and thereby avoid deeply-nested if statements   In the following example continue will get the next line  without processing the following statement in the loop    while  getNext line       if  line isEmpty      line isComment        continue       More code here     With a label  continue will re-execute from the loop with the corresponding label  rather than the innermost loop   This can be used to escape deeply-nested loops  or simply for clarity     Sometimes continue is also used as a placeholder in order to make an empty loop body more clear   for  count   0  foo moreData    count      continue    The same statement without a label also exists in C and C     The equivalent in Perl is next   This type of control flow is not recommended  but if you so choose you can also use continue to simulate a limited form of goto   In the following example the continue will re-execute the empty for      loop   aLoopName  for                   while  someCondition               if  otherCondition        continue aLoopName

User · Answer

A continue statement without a label will re-execute from the condition the innermost while or do loop  and from the update expression of the innermost for loop    It is often used to early-terminate a loop s processing and thereby avoid deeply-nested if statements   In the following example continue will get the next line  without processing the following statement in the loop    while  getNext line       if  line isEmpty      line isComment        continue       More code here     With a label  continue will re-execute from the loop with the corresponding label  rather than the innermost loop   This can be used to escape deeply-nested loops  or simply for clarity     Sometimes continue is also used as a placeholder in order to make an empty loop body more clear   for  count   0  foo moreData    count      continue    The same statement without a label also exists in C and C     The equivalent in Perl is next   This type of control flow is not recommended  but if you so choose you can also use continue to simulate a limited form of goto   In the following example the continue will re-execute the empty for      loop   aLoopName  for                   while  someCondition               if  otherCondition        continue aLoopName

User · Answer

continue is kind of like goto  Are you familiar with break  It s easier to think about them in contrast    break terminates the loop  jumps to the code below it   continue terminates the rest of the processing of the code within the loop for the current iteration  but continues the loop

User · Answer

As already mentioned continue will skip processing the code below it and until the end of the loop  Then  you are moved to the loop s condition and run the next iteration if this condition still holds  or if there is a flag  to the denoted loop s condition    It must be highlighted that in the case of do - while you are moved to the condition at the bottom after a continue  not at the beginning of the loop   This is why a lot of people fail to correctly answer what the following code will generate       Random r   new Random        Set lt Integer gt  aSet  new HashSet lt Integer gt         int anInt      do           anInt   r nextInt 10           if  anInt   2    0              continue          System out println anInt         while  aSet add anInt        System out println aSet      If your answer is that aSet will contain odd numbers only 100     you are wrong

User · Answer

Let s see an example   int sum   0  for int i   1  i  lt   100   i         if i   2    0           continue      sum    i      This would get the sum of only odd numbers from 1 to 100

User · Answer

I m a bit late to the party  but     It s worth mentioning that continue is useful for empty loops where all of the work is done in the conditional expression controlling the loop  For example   while   buffer i      readChar     gt   0      continue    In this case  all of the work of reading a character and appending it to buffer is done in the expression controlling the while loop  The continue statement serves as a visual indicator that the loop does not need a body   It s a little more obvious than the equivalent   while             and definitely better  and safer  coding style than using an empty statement like   while

User · Answer

continue must be inside a loop Otherwise it showsThe error below      Continue outside the loop

User · Answer

A continue statement without a label will re-execute from the condition the innermost while or do loop  and from the update expression of the innermost for loop    It is often used to early-terminate a loop s processing and thereby avoid deeply-nested if statements   In the following example continue will get the next line  without processing the following statement in the loop    while  getNext line       if  line isEmpty      line isComment        continue       More code here     With a label  continue will re-execute from the loop with the corresponding label  rather than the innermost loop   This can be used to escape deeply-nested loops  or simply for clarity     Sometimes continue is also used as a placeholder in order to make an empty loop body more clear   for  count   0  foo moreData    count      continue    The same statement without a label also exists in C and C     The equivalent in Perl is next   This type of control flow is not recommended  but if you so choose you can also use continue to simulate a limited form of goto   In the following example the continue will re-execute the empty for      loop   aLoopName  for                   while  someCondition               if  otherCondition        continue aLoopName

User · Answer

The continue statement is used in loop control structure when you need to jump to the next iteration of the loop immediately    It can be used with for loop or while loop   The Java continue statement is used to continue the loop  It continues the current flow of the program and skips the remaining code at the specified condition   In case of an inner loop  it continues the inner loop only    We can use Java continue statement in all types of loops such as for loop  while loop and do-while loop    for example   class Example      public static void main String args             System out println  Start            for int i 0  i lt 10  i                 if i  5  continue               System out println  i     i                        System out println  End               output   Start i   0 i   1 i   2 i   3 i   4 i   6 i   7 i   8 i   9 End     number 5 is skip

User · Answer

Basically in java  continue is a statement  So continue statement is normally used with the loops to skip the current iteration   For how and when it is used in java  refer link below  It has got explanation with example   https   www flowerbrackets com continue-java-example   Hope it helps

User · Answer

The continue statement is used in loop control structure when you need to jump to the next iteration of the loop immediately    It can be used with for loop or while loop   The Java continue statement is used to continue the loop  It continues the current flow of the program and skips the remaining code at the specified condition   In case of an inner loop  it continues the inner loop only    We can use Java continue statement in all types of loops such as for loop  while loop and do-while loop    for example   class Example      public static void main String args             System out println  Start            for int i 0  i lt 10  i                 if i  5  continue               System out println  i     i                        System out println  End               output   Start i   0 i   1 i   2 i   3 i   4 i   6 i   7 i   8 i   9 End     number 5 is skip

User · Answer

As already mentioned continue will skip processing the code below it and until the end of the loop  Then  you are moved to the loop s condition and run the next iteration if this condition still holds  or if there is a flag  to the denoted loop s condition    It must be highlighted that in the case of do - while you are moved to the condition at the bottom after a continue  not at the beginning of the loop   This is why a lot of people fail to correctly answer what the following code will generate       Random r   new Random        Set lt Integer gt  aSet  new HashSet lt Integer gt         int anInt      do           anInt   r nextInt 10           if  anInt   2    0              continue          System out println anInt         while  aSet add anInt        System out println aSet      If your answer is that aSet will contain odd numbers only 100     you are wrong

User · Answer

I m a bit late to the party  but     It s worth mentioning that continue is useful for empty loops where all of the work is done in the conditional expression controlling the loop  For example   while   buffer i      readChar     gt   0      continue    In this case  all of the work of reading a character and appending it to buffer is done in the expression controlling the while loop  The continue statement serves as a visual indicator that the loop does not need a body   It s a little more obvious than the equivalent   while             and definitely better  and safer  coding style than using an empty statement like   while

User · Answer

continue is kind of like goto  Are you familiar with break  It s easier to think about them in contrast    break terminates the loop  jumps to the code below it   continue terminates the rest of the processing of the code within the loop for the current iteration  but continues the loop

User · Answer

Let s see an example   int sum   0  for int i   1  i  lt   100   i         if i   2    0           continue      sum    i      This would get the sum of only odd numbers from 1 to 100

User · Answer

A continue statement without a label will re-execute from the condition the innermost while or do loop  and from the update expression of the innermost for loop    It is often used to early-terminate a loop s processing and thereby avoid deeply-nested if statements   In the following example continue will get the next line  without processing the following statement in the loop    while  getNext line       if  line isEmpty      line isComment        continue       More code here     With a label  continue will re-execute from the loop with the corresponding label  rather than the innermost loop   This can be used to escape deeply-nested loops  or simply for clarity     Sometimes continue is also used as a placeholder in order to make an empty loop body more clear   for  count   0  foo moreData    count      continue    The same statement without a label also exists in C and C     The equivalent in Perl is next   This type of control flow is not recommended  but if you so choose you can also use continue to simulate a limited form of goto   In the following example the continue will re-execute the empty for      loop   aLoopName  for                   while  someCondition               if  otherCondition        continue aLoopName

User · Answer

Generally  I see continue  and break  as a warning that the code might use some refactoring  especially if the while or for loop declaration isn t immediately in sight  The same is true for return in the middle of a method  but for a slightly different reason   As others have already said  continue moves along to the next iteration of the loop  while break moves out of the enclosing loop   These can be maintenance timebombs because there is no immediate link between the continue break and the loop it is continuing breaking other than context  add an inner loop or move the  guts  of the loop into a separate method and you have a hidden effect of the continue break failing   IMHO  it s best to use them as a measure of last resort  and then to make sure their use is grouped together tightly at the start or end of the loop so that the next developer can  see the  bounds  of the loop in one screen   continue  break  and return  other than the One True Return at the end of your method  all fall into the general category of  hidden GOTOs   They place loop and function control in unexpected places  which then eventually causes bugs

User · Answer

Generally  I see continue  and break  as a warning that the code might use some refactoring  especially if the while or for loop declaration isn t immediately in sight  The same is true for return in the middle of a method  but for a slightly different reason   As others have already said  continue moves along to the next iteration of the loop  while break moves out of the enclosing loop   These can be maintenance timebombs because there is no immediate link between the continue break and the loop it is continuing breaking other than context  add an inner loop or move the  guts  of the loop into a separate method and you have a hidden effect of the continue break failing   IMHO  it s best to use them as a measure of last resort  and then to make sure their use is grouped together tightly at the start or end of the loop so that the next developer can  see the  bounds  of the loop in one screen   continue  break  and return  other than the One True Return at the end of your method  all fall into the general category of  hidden GOTOs   They place loop and function control in unexpected places  which then eventually causes bugs

User · Answer

Generally  I see continue  and break  as a warning that the code might use some refactoring  especially if the while or for loop declaration isn t immediately in sight  The same is true for return in the middle of a method  but for a slightly different reason   As others have already said  continue moves along to the next iteration of the loop  while break moves out of the enclosing loop   These can be maintenance timebombs because there is no immediate link between the continue break and the loop it is continuing breaking other than context  add an inner loop or move the  guts  of the loop into a separate method and you have a hidden effect of the continue break failing   IMHO  it s best to use them as a measure of last resort  and then to make sure their use is grouped together tightly at the start or end of the loop so that the next developer can  see the  bounds  of the loop in one screen   continue  break  and return  other than the One True Return at the end of your method  all fall into the general category of  hidden GOTOs   They place loop and function control in unexpected places  which then eventually causes bugs

User · Answer

Consider an If Else condition  A continue statement executes what is there in a condition and gets out of the condition i e  jumps to next iteration or condition  But a Break leaves the loop   Consider the following Program         public class ContinueBreak       public static void main String   args            String   table   aa   bb   cc   dd            for String ss table               if  bb  equals ss                    continue                            System out println ss               if  cc  equals ss                    break                                  System out println  Out of the loop                It will print  aa cc Out of the loop    If you use break in place of continue After if    it will just print aa and out of the loop    If the condition  bb  equals ss is satisfied   For Continue  It goes to next iteration i e   cc  equals ss   For Break  It comes out of the loop and prints  Out of the loop

User · Answer

If you think of the body of a loop as a subroutine  continue is sort of like return  The same keyword exists in C  and serves the same purpose  Here s a contrived example   for int i 0  i  lt  10    i      if  i   2    0        continue        System out println i       This will print out only the odd numbers

User · Answer

Let s see an example   int sum   0  for int i   1  i  lt   100   i         if i   2    0           continue      sum    i      This would get the sum of only odd numbers from 1 to 100

User · Answer

Continue is a keyword in Java  amp  it is used to skip the current iteration   Suppose you want to print all odd numbers from 1 to 100   public class Main        public static void main String args             Program to print all odd numbers from 1 to 100          for int i 1   i lt  100   i                  if i   2    0                    continue                            System out println i                        continue statement in the above program simply skips the iteration when i is even and prints the value of i when it is odd   Continue statement simply takes you out of the loop without executing the remaining statements inside the loop and triggers the next iteration

[java] What is the "continue" keyword and how does it work in Java?

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