New features in Java 8

New features in Java 8

Java 8 (also known as JDK 1.8) is a major version of Java language development. Oracle Corporation released Java 8 on March 18, 2014, which supports functional programming, new JavaScript engines, new date APIs, new stream APIs, and more.

New features

Java8 has added a lot of features, we mainly discuss the following:

• The Lambda expression −lambda allows the function to be passed as a parameter of a method (function as an argument into the method).

• method Reference − A method reference provides a very useful syntax to directly reference a method or constructor that already has a Java class or object (instance). Used in conjunction with lambda, method references can make language constructs more compact and concise, reducing redundant code.

• default Method − The default method is a method that has an implementation in the interface.

• new Tools − New compiler tools, such as: Nashorn engine JJs, class-dependent parser jdeps.

• Stream API − The newly added stream API (Java.util.stream) introduces a true functional programming style into Java.

• Date Time API − strengthens the processing of dates and times.

• The Optional class −optional class has become part of the Java 8 class library To resolve null pointer exceptions.

• Nashorn, JavaScript engine −java 8 provides a new Nashorn JavaScript engine that allows us to run specific JavaScript applications on the JVM.

Programming style

Java 8 wants its own programming style and differs from Java 7, and the following examples show the programming formats for Java 7 and Java 8:

Java8tester.java File Code:Import Java.Util.Collections;Import Java.Util.List;Import Java.Util.ArrayList;Import Java.Util.Comparator;Public Class Java8tester { Public Static void Main(String Args[]){ List<String>Names1=New ArrayList<String>();Names1.Add("Google");Names1.Add("Runoob");Names1.Add("Taobao");Names1.Add("Baidu");Names1.Add("Sina");List<String>Names2=New ArrayList<String>();Names2.Add("Google");Names2.Add("Runoob");Names2.Add("Taobao");Names2.Add("Baidu");Names2.Add("Sina");Java8tester Tester=New Java8tester();System.Out.println("Using Java 7 Syntax:");Tester.SortUsingJava7(Names1);System.Out.println(Names1);System.Out.println("Using Java 8 Syntax:");Tester.SortUsingJava8(Names2);System.Out.println(Names2);} //Sorting using Java 7 Private void SortUsingJava7(List<String>Names){ Collections.Sort(Names,New Comparator<String>() {@Override Public Int Compare(String S1,String S2) { Return S1.CompareTo(S2);} });} //Sorting using Java 8 Private void SortUsingJava8(List<String> names) { collectionssort (names (s1s2) s1< Span class= "Hl-code". compareto (s2 ) } } /span>

New Java 8 features