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Around the industry, everyone is talking about attaining and acquiring ISO standards for their Organizations. ISO has grabbed the market very fast and has become a quality measurement parameter. However, what exactly is ISO and what is the process of attaining this certification?To understand this more effectively, let us first understand what is Quality. Quality can be implied as a measure of degree of excellence. With better quality comes better service and value for money. Quality can mean different things to different people. For some people, Quality can mean doing the right job at the right time, for some Quality ... Read More
LongSupplier is a built-in functional interface from java.util.function package. This interface doesn’t expect any input but produces a long-valued output. Since LongSupplier is a functional interface, it can be used as an assignment target for lambda expression and method reference and contains only one abstract method: getAsLong().Syntax@FunctionalInterface public interface LongSupplier { long getAsLong(); }Example of Lambda Expressionimport java.util.function.LongSupplier; public class LongSupplierLambdaTest { public static void main(String args[]) { LongSupplier supplier = () -> { // lambda expression return 75; }; long result = supplier.getAsLong(); System.out.println(result); } }Output75Example ... Read More
LongPredicate is a functional interface defined in java.util.function package. This interface can be used mainly for evaluating an input of type long and returns an output of type boolean. LongPredicate can be used as an assignment target for a lambda expression or method reference. It contains one abstract method: test() and three default methods: and(), negate() and or().Syntax@FunctionalInterface interface LongPredicate { boolean test(long value); }Example of Lambda Expressionimport java.util.function.LongPredicate; public class LongPredicateLambdaTest { public static void main(String args[]) { LongPredicate longPredicate = (long input) -> { // lambda expression if(input == 50) { ... Read More
In this article, we will learn about Byobu on the Ubuntu 16.04, Byobu which is a terminal multiplexer and easy to use, Byobu is used to have multiple windows, consoles and split panes within the windows and will also show the status badges and notifications on the terminal.To complete this tutorial we needed an Ubuntu 16.04 installed and a Linux user with sudo permissions.Installing or Checking the ByobuAs a default feature of Ubuntu 16.04, Byobu is installed. However, as a practice, we will check the installation and version and if not we will install the Byobu.To check the Byobu is ... Read More
On a fine blue Monday morning, the customer sent you an email for urgent video call. You, being a good Project Manager, the project’s progress status and all other details you always kept at your bay. So, without any second thought, you jumped to the video call and start discussing with your client.After your initial exchange of pleasantries, suddenly the client complained that you are going in a wrong direction. He has gone through the application you have released yesterday at the end of first phase and he is totally disappointed that the requirements he has mentioned initially are different ... Read More
JDBC is acronym of Java database connectivity. It is used to connect your application to the database and transactions . It is an open source Java api. Hibernate is also used for connect your application to database and to do database related transactions but with different approach. It has a object relationship library which mapped the tables and columns of the database with the java object. It enables object oriented programming in database. Hibernate provides HQL to access the data from the database. Sr. No.KeyJDBCHibernate1Basic It is database connectivity technology It is a framework, 2Lazy Loading It does not support lazy loading Hibernate support ... Read More
IntBinaryOperator is a functional interface in Java 8 from java.util.function package. This interface expects two parameters of type int as input and produces an int type result. IntBinaryOperator can be used as an assignment target for a lambda expression or method reference. It contains only one abstract method: applyAsInt().Syntax@FunctionalInterface public interface IntBinaryOperator { int applyAsInt(int left, int right) }Exampleimport java.util.function.*; public class IntBinaryOperatorTest { public static void main(String[] args) { IntBinaryOperator test1 = (a, b) -> a + b; // lambda expression System.out.println("Addition of two parameters: " + test1.applyAsInt(10, 20)); IntFunction test2 = new IntFunction() { ... Read More
Function interface is a functional interface from java.util.function package. This interface expects one argument as input and produces a result. Function interface can be used as an assignment target for a lambda expression or method reference. It contains one abstract method: apply(), two default methods: andThen() and compose() and one static method: identity().Syntax@FunctionalInterface public interface Function { R apply(T t); }Exampleimport java.util.function.Function; public class FunctionTest { public static void main(String[] args) { Function f1 = i -> i*4; // lambda System.out.println(f1.apply(3)); Function f2 = i -> i+4; // lambda ... Read More
DoubleSupplier interface is a built-in functional interface defined in java.util.function package. This functional interface doesn’t expect any input but produces a double-valued output. DoubleSupplier interface can be used as an assignment target for lambda expression and method reference. This interface contains only one abstract method: getAsDouble().Syntax@FunctionalInterface public interface DoubleSupplier { double getAsDouble(); }Example of Lambda Expressionimport java.util.concurrent.ThreadLocalRandom; import java.util.function.DoubleSupplier; public class DoubleSupplierLambdaTest { public static void main(String args[]) { DoubleSupplier getRandomDouble = () -> { // lambda expression double doubleVal = ThreadLocalRandom.current().nextDouble(0000, 9999); return Math.round(doubleVal); }; ... Read More
The functional interface is a simple interface with only one abstract method. A lambda expression can be used through a functional interface in Java 8. We can declare our own/custom functional interface by defining the Single Abstract Method (SAM) in an interface.Syntaxinterface CustomInterface { // abtstact method }Example@FunctionalInterface interface CustomFunctionalInterface { void display(); } public class FunctionInterfaceLambdaTest { public static void main(String args[]) { // Using Anonymous inner class CustomFunctionalInterface test1 = new CustomFunctionalInterface() { public void display() { System.out.println("Display using Anonymous inner class"); ... Read More