Answer by EfForEffort for How does the Java 'for each' loop work?
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 How does the Java 'for each' loop work?
for (Iterator<String> itr = someList.iterator(); itr.hasNext(); ) { String item = itr.next(); System.out.println(item); }
View ArticleAnswer by Pete for How does the Java 'for each' loop work?
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 How does the Java 'for each' loop work?
Here's an equivalent expression. for(Iterator<String> sit = someList.iterator(); sit.hasNext(); ) { System.out.println(sit.next()); }
View ArticleAnswer by toluju for How does the Java 'for each' loop work?
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 How does the Java 'for each' loop work?
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 ArticleHow does the Java 'for each' loop work?
Consider: List<String> someList = new ArrayList<String>(); // add "monkey", "donkey", "skeleton key" to someList for (String item : someList) { System.out.println(item); } What would the...
View ArticleAnswer by mightyWOZ for How does the Java 'for each' loop work?
As many of other answers correctly state, the foreachloop is just syntactic sugar over the same old forloop. You can see the actual for loop to which it is translated by using the -XD-printflat switch...
View ArticleAnswer by Java-Dev for How does the Java 'for each' loop work?
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 How does the Java 'for each' loop work?
I think this will work:for (Iterator<String> i = someList.iterator(); i.hasNext(); ) { String x = i.next(); System.out.println(x);}
View ArticleAnswer by IsraelCena for How does the Java 'for each' loop work?
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 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
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