Internally, each iterator instance maintains a pointer to the element in the collection that will be accessed next by the iterator. The hasNext() methods is a check to see if the next element in the collection is available for access. If the collection is empty or the end of the collection...
Here we want to loadLICENSE.txtthat resides in Hamcrest library, so we will use theMatcher’sclass that helps to get a resource. The same file can be loaded using the classloader too. 13. Conclusion As we can see, there are many possibilities for loading a file and reading data from i...
How to use the java iterator hasNext() and next() methods? Every element in the collection can be visited one by one by calling next(). The method throws an exception when there are no more elements in the collection. In order to avoid the exception, you should call hasnext() before n...
As a result, you might need to run the whole class to find the problem. To overcome this problem TestNG provides an inbuilt class called the Reporter Class that is used for logging. This tutorial explores how to use the TestNG Reporter Log in Selenium to identify the cause of a failed ...
Let’s see a example for how to use Hashtable in java programs. import java.util.Hashtable; import java.util.Iterator; public class HashtableExample { public static void main(String[] args) { //1. Create Hashtable Hashtable<Integer, String> hashtable = new Hashtable<>(); //2. ...
The Apache Commons solution is fuller featured and has regular updates but requires a little more work to use. 7. Conclusion In this article, we saw how to read INI files using a couple of open-source libraries. We saw how to read individual keys and how to iterate over the whole file...
Java while Loop Thewhileloopin Java continually executes a block of statements until a particular condition evaluates totrue. As soon as the condition becomesfalse, thewhileloop terminates. As a best practice, if the number of iterations is not known at the start, it is recommended to use ...
while(crunchifyIterator.hasNext()){ System.out.println(crunchifyIterator.next()); } // ListIterator - traverse a list of elements in either forward or backward order // An iterator for lists that allows the programmer to traverse the list in either direction, modify the list during iteration...
I have written a Java program with over 700 lines of code, which has been packaged as a running Jar program. After double clicking and running, I can read the "boxs.txt" file created in partition D, ... Another screenshot of the result, including the "boxs.txt"...
Close a Scanner in Java Using close() Conclusion In this tutorial, we will learn how to close a scanner in Java and when we should use it. ADVERTISEMENT The Scanner class has a method close() that is especially available to close the opened scanner. It is a good practice to close ...