
Declaring variables inside or outside of a loop - Stack Overflow
Jan 10, 2012 · The scope of local variables should always be the smallest possible. In your example I presume str is not used outside of the while loop, otherwise you would not be asking …
java - Remove elements from collection while iterating - Stack …
May 3, 2012 · In the collect and removeAll approach the disadvantage is that we have to iterate twice. First we iterate in the foor-loop looking for an object that matches our removal criteria, …
java - How to break a while loop from an if condition inside the …
An "if" is not a loop. Just use the break inside the "if" and it will break out of the "while". If you ever need to use genuine nested loops, Java has the concept of a labeled break. You can put a …
Is it possible to declare a variable within a Java while conditional ...
Aug 4, 2016 · But the variable still has to be declared outside the while-loop. So, as I want to keep my variable scopes clean, is it possible to declare a variable within the while conditional, or is …
How do I exit a while loop in Java? - Stack Overflow
Oct 31, 2011 · 2 Take a look at the Java™ Tutorials by Oracle. But basically, as dacwe said, use break. If you can it is often clearer to avoid using break and put the check as a condition of the …
What is the "continue" keyword and how does it work in Java?
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 …
java - do-while and while comparison - Stack Overflow
Nov 18, 2013 · while is an entry check loop, whereas do-while is an exit-check loop. And NO, what you mentioned is not the right way to interchange the loop, while having the functionality …
Using while loop in java - Stack Overflow
You need to change the variable that is being tested, here input2, inside of the loop. Else there's no chance of exiting. All you change in the loop is the total variable while input2 remains …
Why should wait() always be called inside a loop - Stack Overflow
Oct 1, 2018 · A while loop is the best choice for checking the condition predicate both before and after invoking wait (). Similarly, the await () method of the Condition interface also must be …
Learning the nested while loop in Java - Stack Overflow
Feb 12, 2011 · 4 Simply because you don't reset i before you start the inner loop (or after you end it.) Therefore, in the second, and subsequent iterations of the outer loop, you get to the inner …