
In detail, how does the 'for each' loop work in Java?
People new to Java commonly encounter issues when trying to modify the original data using the new style foreach loop. Use Why doesn't assigning to the iteration variable in a foreach loop …
java - 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 …
What is the syntax of the enhanced for loop in Java?
Mar 2, 2017 · 44 I have been asked to use the enhanced for loop in my coding. I have only been taught how to use traditional for loops, and as such don't know about the differences between …
java - How to make a reverse string using a for loop? - Stack …
Apr 1, 2017 · I need to have my code output the String in reverse order. For example, the output should have "code" return as "edoc". This is what I have done so far. public String …
java 8 - Using a stream to iterate n times instead of using a for …
Jan 22, 2015 · List<MyClass> list = Stream.iterate(0, i -> i).limit(10) .map(o -> new MyClass()).collect(Collectors.toList()); Is there a standard/better way of coding this? Note that …
How to replace for loop with streams in java - Stack Overflow
Sep 1, 2021 · "I been told to use streams/lambda in java 8 for the iteration instead of the good old for loop I use." Why, and by who? The suggestion I would make is use a for-each loop (also …
How do I break out of nested loops in Java? - Stack Overflow
May 20, 2009 · The following code shows an example of exiting from the innermost loop. In other works,after executing the following code, you are at the outside of the loop of 'k' variables and …
What is the easiest/best/most correct way to iterate through the ...
Jan 6, 2017 · Some ways to iterate through the characters of a string in Java are: Using StringTokenizer? Converting the String to a char[] and iterating over that. What is the …
java - why is the enhanced for loop more efficient than the normal …
Jul 19, 2012 · The first thing to note is that for collections the enhanced for loop uses an Iterator, so if you manually iterate over a collection using an Iterator then you should have pretty much …
What is the difference between i++ & ++i in a for loop?
The way for loop is processed is as follows 1 First, initialization is performed (i=0) 2 the check is performed (i < n) 3 the code in the loop is executed. 4 the value is incremented 5 Repeat steps …