Supplier<String> supplier = () -> "hello, world";
String result = supplier.get();
System.out.println(result);

Supplier stringSupplier = () -> new String("Hi Neo");
String string = stringSupplier.get();
System.out.println(string);

Supplier<LocalDateTime> currentTime = () -> LocalDateTime.now();  
LocalDateTime now = currentTime.get(); // 计算当前时间

Optional<String> optional = Optional.ofNullable("hello"); 
String orElseGet = optional.orElseGet(() -> "world");

Supplier userSupplier= () -> new User(1,"netkiller");  
User user=userSupplier.get();  
System.out.println(user.getName());  
		
		

		
package cn.netkiller.test;

import java.util.function.Supplier;

public class TestSupplier {
    private final int age = 24;

    TestSupplier() {
        System.out.println(age);
    }

    public static void main(String[] args) {
        Supplier<TestSupplier> supplier = TestSupplier::new;
        //调用get()方法，此时会调用对象的构造方法，即获得到真正对象
        supplier.get();
        System.out.println(supplier.get().test());

        TestSupplier test = supplier.get();
        System.out.println(test.test());
    }

    private String test() {
        return "Helloworld!!!";
    }
}		
		
		

			
package cn.netkiller.test;

import java.util.function.Supplier;

public class TestSupplier {
    private final int age = 24;
    private final String name;

    TestSupplier(String name) {
        this.name = name;
//        System.out.println(name);
    }

    public static void main(String[] args) {
        Supplier<String> stringSupplier = () -> {
            return "test1";
        };
        System.out.println(stringSupplier.get());

        Supplier<String> stringSupplier1 = () -> "test2";
        System.out.println(stringSupplier1.get());

        Supplier<TestSupplier> testSupplier = () -> new TestSupplier("Neo");
        System.out.println(testSupplier.get().name);

//        String name = "Netkiller";
//        Supplier<TestSupplier> testSupplier1 = (name) -> {new TestSupplier(name)};
//        System.out.println(testSupplier1.get().name);
//        System.out.println(test.test());
    }

    private String test() {
        return "Helloworld!!!";
    }
}
			
		

			
package cn.netkiller.test;

import java.util.concurrent.ExecutionException;
import java.util.function.Supplier;

public class Test {
    public static void main(String[] args) throws ExecutionException, InterruptedException {
        System.out.println(Thread.currentThread());
        process(() -> {
            System.out.println(Thread.currentThread().getName() + " Process...");
            return "Test";
        });

        Supplier<String> stringSupplier1 = () -> "netkiller";
        process(stringSupplier1);

    }

    public static <T> void process(Supplier<T> supplier) {
//        System.out.println(Thread.currentThread().getName() + " Process...");

//        CompletableFuture<T> runAsync = CompletableFuture.supplyAsync(supplier);
//        runAsync.join();
//        System.out.println(variable.get());

        T value = supplier.get();
        System.out.println(value);
    }
}