1.1 This example usesSupplierto return a current date-time. Java8Supplier1.java packagecom.mkyong;importjava.time.LocalDateTime;importjava.time.format.DateTimeFormatter;importjava.util.function.Supplier;publicc
In Java 8,Consumeris a functional interface; it takes an argument and returns nothing. @FunctionalInterfacepublicinterfaceConsumer<T> {voidaccept(T t); }Copy 1. Consumer Java8Consumer1.java packagecom.mkyong.java8;importjava.util.function.Consumer;publicclassJava8Consumer1{publicstaticvoidmain(Strin...
Java 8 introduced and new javascript engine named “Nashorn”. Nashorn is based onDa Vinci Machine,a project with aim of adding dynamic language support to JVM. Nashorn is a nice milestone to make the hybrid softwares easier than before. The nice features of this engine makes you able to mak...
2. Streams filter(), findAny() and orElse() package com.mkyong.java8; import java.util.Arrays; import java.util.List; public class NowJava8 { public static void main(String[] args) { List<Person> persons = Arrays.asList( new Person("mkyong", 30), new Person("jack", 20), new P...
8|0七. FileSystems.newFileSystem() 方法在FileSystems 类中添加了三种新方法,以便更容易地使用文件系统提供程序,这些提供程序将文件的内容视为文件系统。newFileSystem(Path) newFileSystem(Path, Map<String, ?>) newFileSystem(Path, Map<String, ?>, ClassLoader)回到...
Encrypt and decrypt a message with theChaCha20-Poly1305algorithm. TestChaCha20Poly1305.java packagecom.mkyong.java11.jep329.poly1305;importjavax.crypto.KeyGenerator;importjavax.crypto.SecretKey;importjava.nio.ByteBuffer;importjava.security.NoSuchAlgorithmException;importjava.security.SecureRandom;publicclassTes...
Further ReadJava 8 Function Examples 1. UnaryOperator 1.1 In this example, theFunction<Integer, Integer>which accepts and returns the same type, can be replaced withUnaryOperator<Integer>. Java8UnaryOperator1.java packagecom.mkyong;importjava.util.function.Function;importjava.util.function.UnaryOperator...
Further Reading–Java 8 Consumer Examples 1. BiConsumer JavaBiConsumer1.java packagecom.mkyong.java8;importjava.util.function.Consumer;publicclassJavaBiConsumer1{publicstaticvoidmain(String[] args){ BiConsumer<Integer, Integer> addTwo = (x, y) -> System.out.println(x + y); ...
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packagecom.mkyong.exactmethods;packagecom.mkyong;publicclassMultiplyExact{publicstaticvoidmain(String[] args){intx=Integer.MAX_VALUE;//( = 2 147 483 647)inty=Integer.MAX_VALUE; Object z; System.out.println("---Before Java 8---");