java

16

Oct

stack / vector removeIf example

Java 8 introduces a new method available for Collection types: removeif(). It accepts a predicate which defines the condition on which the elements should be removed. It returns a...

14

Oct

Inversion of control / Dependency injection — what is it?

Assume you depend on two or objects to create a functional representation of “Add to cart” implementation. This can be achieved traditionally via: create objects of all dependencies and...

05

Sep

AtomicInteger in Java

Let’s create a simple multi-threaded program where every thread increments the shared count variable 4 times. So if there are two threads, after they finish count value should be...

31

Aug

Handling timouts due to page load times in Selenium

For your Automated testing, Page Load time can be configured with pageLoadStrategy through Selenium WebDriver. At a time When Page Loading takes too much time your automated tests can...

30

Aug

Unique words and their count in a text file

import java.io.BufferedReader; import java.io.DataInputStream; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.IOException; import java.io.InputStreamReader; import java.util.ArrayList; import java.util.Collections; import java.util.Comparator; import java.util.HashMap; import java.util.List; import java.util.Map; import java.util.Set; import java.util.StringTokenizer; import...

29

Aug

handling WebDriver exceptions before test execution with TestNG

One can use static initialization block to catch exception like this: public class A { static final WebDriver wd; static { try { wd = new FirefoxDriver(); } catch...

28

Aug

Set functions in Java

package Set; import java.util.Arrays; import java.util.HashSet; import java.util.Iterator; import java.util.Set; import java.util.Spliterator; public class SetsExamples { static Set initSet1() { Set set1 = new HashSet(Arrays.asList(11,12,13,14,15)); return set1; } static...

24

Aug

Get free disk space from Java program

Following code snippet can be used to find the free disk space on local file system import java.io.File; public class FreediskspaceinGB { public static void main(String args) { File...

24

Aug

kill a running process from your java program (in Windows)

Following code snippet can be used to kill a process on windows system package practice; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; public class WindowsProcessKiller { // command used to...

23

Aug

Code snippet to execute dos command and process it’s result – (Find open TCP Ports on local system)

package practice; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; public class freeport { public static void main(String args) { try { Runtime rt = Runtime.getRuntime(); String command = “netstat -an”;...

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