Assign variable value inside if-statement

Question

I was wondering whether it is possible to assign a variable a value inside a conditional operator like so   if  int v   someMethod       0  return v   Is there some way to do this in Java  Because I know it s possible in while conditions  but I m not sure if I m doing it wrong for the if-statement or if it s just not possible

User · Answer

Yes  it s possible to do  Consider the code below   public class Test                 public static void main  String   args                              int v   0                    if   v dostuff     0                                              System out printf  HOWDY n                                                               public static int dostuff                                       dosomething                       return 1                              I hope this will satisfy your question

User · Answer

You can assign a variable inside of if statement  but you must declare it first

User · Answer

Yes  it is possible to assign inside if conditional check  But  your variable should have already been declared to assign something

User · Answer

Because I know it s possible in while conditions  but I m not sure if   I m doing it wrong for the if-statement or if it s just not possible    HINT  what type while and if condition should be      If it can be done with while  it can be done with if statement as weel  as both of them expect a boolean condition

User · Answer

I believe that your problem is due to the fact that you are defining the variable v inside the  test  As explained by  rmalchow  it will work you change it into  int v  if  v   someMethod       0  return true    There is also another issue of variable scope  Even if what you tried were to work  what would be the point  Assuming you could define the variable scope inside the test  your variable v would not exist outside that scope  Hence  creating the variable and assigning the value would be pointless  for you would not be able to use it   Variables exist only in the scope they were created  Since you are assigning the value to use it afterwards  consider the scope where you are creating the varible so that it may be used where needed

User · Answer

Variables can be assigned but not declared inside the conditional statement   int v  if  v   someMethod       0  return true

User · Answer

You can assign  but not declare  inside an if   Try this   int v     separate declaration if  v   someMethod       0  return true

User · Answer

Yes  you can assign the value of variable inside if   I wouldn t recommend it  The problem is  it looks like a common error where you try to compare values  but use a single   instead of    or        It will be better if you do something like this   int v  if  v   someMethod       0      return true

User · Answer

an assignment returns the left-hand side of the assignment  so  yes  it is possible  however  you need to declare the variable outside   int v   1  if  v   someMethod       0        System err println v

[java] Assign variable value inside if-statement

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