Java新特性解读JDK8之函数式接口Supplier

package java.util.function;


/**
 * Represents a supplier of results.
 *
 * <p>There is no requirement that a new or distinct result be returned each
 * time the supplier is invoked.
 *
 * <p>This is a <a href="package-summary.html">functional interface</a>
 * whose functional method is {@link #get()}.
 *
 * @param <T> the type of results supplied by this supplier
 *
 * @since 1.8
 */
@FunctionalInterface
public interface Supplier<T> {


    /**
     * Gets a result.
     *
     * @return a result
     */
    T get();
}

package com.example.functionalinterfacedemo;
import java.util.function.Supplier;
public class SupplierDemo {
  public static void main(String[] args) {
    getObj();
  }
  /**
   * 可用于工厂设计模式，无参的工厂方法
   * @return
   */
  public static Object getObj() {
    Supplier<Object>supplier=()->{
      System.out.println("生产对象");
      return new Object();
    };
    return supplier.get();
  }
}