Answer by IsraelCena for In detail, how does the 'for each' loop work in Java?
Using forEach:int[] numbers = {1,2,3,4,5};Arrays.stream(numbers).forEach(System.out::println);Response:12345The process finished with exit code 0PS: You need a Array (int[] numbers), and import...
View ArticleAnswer by Java-Dev for In detail, how does the 'for each' loop work in Java?
The code would be:import java.util.ArrayList;import java.util.List;public class ForLoopDemo { public static void main(String[] args) { List<String> someList = new ArrayList<String>();...
View ArticleAnswer by nabayram for In detail, how does the 'for each' loop work in Java?
I think this will work:for (Iterator<String> i = someList.iterator(); i.hasNext(); ) { String x = i.next(); System.out.println(x);}
View ArticleAnswer by mightyWOZ for In detail, how does the 'for each' loop work in Java?
As many of other answers correctly state, the for each loop is just syntactic sugar over the same old for loop and the compiler translates it to the same old for loop.javac (OpenJDK) has a switch,...
View ArticleAnswer by vivekkurien for In detail, how does the 'for each' loop work in Java?
In Java 8, they introduced forEach. Using it List, Maps can be looped.Loop a List using for eachList<String> someList = new...
View ArticleAnswer by Du-Lacoste for In detail, how does the 'for each' loop work in Java?
Using older Java versions, including Java 7, you can use a foreach loop as follows.List<String> items = new...
View ArticleAnswer by gomisha for In detail, how does the 'for each' loop work in Java?
The Java for each loop (aka enhanced for loop) is a simplified version of a for loop. The advantage is that there is less code to write and less variables to manage. The downside is that you have no...
View ArticleAnswer by stackFan for In detail, how does the 'for each' loop work in Java?
Prior to Java 8, you need to use the following:Iterator<String> iterator = someList.iterator();while (iterator.hasNext()) { String item = iterator.next(); System.out.println(item);}However, with...
View ArticleAnswer by Rei Brown for In detail, how does the 'for each' loop work in Java?
This looks crazy but hey it worksList<String> someList = new ArrayList<>(); //has contentsomeList.forEach(System.out::println);This works. Magic
View ArticleAnswer by Alexander Drobyshevsky for In detail, how does the 'for each' loop...
An alternative to forEach in order to avoid your "for each":List<String> someList = new ArrayList<String>();Variant 1 (plain):someList.stream().forEach(listItem -> {...
View ArticleAnswer by L Joey for In detail, how does the 'for each' loop work in Java?
As so many good answers said, an object must implement the Iterable interface if it wants to use a for-each loop.I'll post a simple example and try to explain in a different way how a for-each loop...
View ArticleAnswer by Santhosh Rajkumar for In detail, how does the 'for each' loop work...
public static Boolean Add_Tag(int totalsize){ List<String> fullst = new ArrayList<String>(); for(int k=0; k<totalsize; k++) { fullst.addAll(); }}
View ArticleAnswer by akhil_mittal for In detail, how does the 'for each' loop work in Java?
As defined in JLS, a for-each loop can have two forms:If the type of expression is a subtype of Iterable then translation is as:List<String> someList = new...
View ArticleAnswer by Manohar for In detail, how does the 'for each' loop work in Java?
It adds beauty to your code by removing all the basic looping clutter. It gives a clean look to your code, justified below.Normal for loop:void cancelAll(Collection<TimerTask> list) { for...
View ArticleAnswer by TheArchon for In detail, how does the 'for each' loop work in Java?
The Java for-each idiom can only be applied to arrays or objects of type *Iterable. This idiom is implicit as it truly backed by an Iterator. The Iterator is programmed by the programmer and often uses...
View ArticleAnswer by Jrovalle for In detail, how does the 'for each' loop work in Java?
In Java 8 features you can use this:List<String> messages = Arrays.asList("First", "Second", "Third");void forTest(){ messages.forEach(System.out::println);}OutputFirstSecondThird
View ArticleAnswer by aliteralmind for In detail, how does the 'for each' loop work in Java?
The for-each loop, added in Java 5 (also called the "enhanced for loop"), is equivalent to using a java.util.Iterator--it's syntactic sugar for the same thing. Therefore, when reading each element, one...
View ArticleAnswer by PrivateName for In detail, how does the 'for each' loop work in Java?
A foreach loop syntax is:for (type obj:array) {...}Example:String[] s = {"Java", "Coffe", "Is", "Cool"};for (String str:s /*s is the array*/) { System.out.println(str);}Output:JavaCoffeIsCoolWARNING:...
View ArticleAnswer by oneConsciousness for In detail, how does the 'for each' loop work...
The concept of a foreach loop as mentioned in Wikipedia is highlighted below:Unlike other for loop constructs, however, foreach loops usually maintain no explicit counter: they essentially say "do this...
View ArticleAnswer by MRocklin for In detail, how does the 'for each' loop work in Java?
Here is an answer which does not assume knowledge of Java Iterators. It is less precise, but it is useful for education.While programming we often write code that looks like the following:char[] grades...
View ArticleAnswer by Ryan Delucchi for In detail, how does the 'for each' loop work in...
The Java "for-each" loop construct will allow iteration over two types of objects:T[](arrays of any type)java.lang.Iterable<T>The Iterable<T> interface has only one method:...
View ArticleAnswer by Mikezx6r for In detail, how does the 'for each' loop work in Java?
The construct for each is also valid for arrays. e.g.String[] fruits = new String[] { "Orange", "Apple", "Pear", "Strawberry" };for (String fruit : fruits) { // fruit is an element of the `fruits`...
View ArticleAnswer by billjamesdev for In detail, how does the 'for each' loop work in Java?
Also note that using the "foreach" method in the original question does have some limitations, such as not being able to remove items from the list during the iteration.The new for-loop is easier to...
View ArticleAnswer by EfForEffort for In detail, how does the 'for each' loop work in Java?
It's implied by nsayer's answer, but it's worth noting that the OP's for(..) syntax will work when "someList" is anything that implements java.lang.Iterable -- it doesn't have to be a list, or some...
View ArticleAnswer by for In detail, how does the 'for each' loop work in Java?
for (Iterator<String> itr = someList.iterator(); itr.hasNext(); ) { String item = itr.next(); System.out.println(item);}
View ArticleAnswer by Pete for In detail, how does the 'for each' loop work in Java?
It would look something like this. Very crufty. for (Iterator<String> i = someList.iterator(); i.hasNext(); ) System.out.println(i.next());There is a good writeup on for each in the Sun...
View ArticleAnswer by Hank for In detail, how does the 'for each' loop work in Java?
Here's an equivalent expression.for(Iterator<String> sit = someList.iterator(); sit.hasNext(); ) { System.out.println(sit.next());}
View ArticleAnswer by toluju for In detail, how does the 'for each' loop work in Java?
The for-each loop in Java uses the underlying iterator mechanism. So it's identical to the following:Iterator<String> iterator = someList.iterator();while (iterator.hasNext()) { String item =...
View ArticleAnswer by nsayer for In detail, how does the 'for each' loop work in Java?
for (Iterator<String> i = someIterable.iterator(); i.hasNext();) { String item = i.next(); System.out.println(item);}Note that if you need to use i.remove(); in your loop, or access the actual...
View ArticleIn detail, how does the 'for each' loop work in Java?
Consider:List<String> someList = new ArrayList<>();// add "monkey", "donkey", "skeleton key" to someListfor (String item : someList) { System.out.println(item);}What would the equivalent...
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