In Java 8,Supplieris a functional interface; it takes no arguments and returns a result. Supplier.java @FunctionalInterfacepublicinterfaceSupplier<T> { Tget(); }Copy 1. Supplier 1.1 This example usesSupplierto
public interface Supplier<T> { /** * Gets a result. * * @return a result */ T get(); } Java 8 Supplier example Lets use supplier interface to print String: 1 2 3 4 5 6 7 8 9 10 11 12 13 package org.arpit.java2blog; import java.util.function.Supplier; public class Java8...
*/publicabstractvoidmethod();}publicclassDemo{//定义一个方法,参数使用函数式接口MyFunctionalInterfacepublicstaticvoidshow(MyFunctionalInterface myInter){myInter.method();}publicstaticvoidmain(String[]args){//调用show方法,方法的参数是一个接口,所以可以传递接口的实现类对象show(newMyFunctionalInterfaceImpl()...
publicclassTestFunctionInterface{ publicstaticvoidtestFun(MyFunctionInterfacemyFunctionInterface) { myFunctionInterface.method(); } publicstaticvoidmain(String[]args) { testFun(newMyFunctionInterfaceImpl()); } } 1. 2. 3. 4. 5. 6. 7. 8. 9. (2)内名内部类 testFun(newMyFunctionInterface() ...
Now, open up the Eclipse Ide and let’s have a look at a simple code example where theConsumerandSupplierinterface is being used. 2. Java8 Consumer and Supplier Example 2.1 Tools Used We are using Eclipse Oxygen, JDK 8 and Maven. ...
@FunctionalInterface 注解 标识是一个函数式接口 1、该注解只能标记在"有且仅有一个抽象方法"的接口上。 2、JDK8接口中的静态方法和默认方法,都不算是抽象方法。 3、接口默认继承java.lang.Object,所以如果接口显示声明覆盖了Object中方法,那么也不算抽象方法。
Java8中的函数式接口详解(Supplier、Consumer、Predicate、Function),@toc@FunctionalInterface函数式接口:有且只有一个抽象方法的接口,称之为函数式接口@FunctionalInterface注解作用:可以检测接口是否是一个函数式接口是:编译成功否:编译失败(接口中没有抽象方法或者抽
public interface Supplier<T> { T get(); } Tis the type of results supplied by the supplier. Supplieroffers a concise and convenient way to represent value-providing functions, promoting lazy evaluation, code clarity, and compatibility with functional programming concepts in Java. ...
@FunctionalInterface标记在接口上,“函数式接口”是指仅仅只包含一个抽象方法的接口 (1)该注解只能标记在"有且仅有一个抽象方法"的接口上。 (2)JDK8接口中的静态方法和默认方法,都不算是抽象方法。 (3)接口默认继承java.lang.Object,所以如果接口显示声明覆盖了Object中方法,那么也不算抽象方法。
Functional supplier interface in Java tutorial There are only half a dozen classes you really need to master to become competent in the world of functional programming. The java.util.function ...