Test2.java

package com.freemindcafe.java8.sample1;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.stream.Collectors;
import java.util.stream.Stream;

import static java.util.stream.Collectors.toList;

import org.junit.Test;

public class Test2 {
    
    @Test
    public void test1() {
        Runnable r1 = new Runnable() {
            
            @Override
            public void run() {
                System.out.println("r1");           
            }
        };
        
        r1.run();
        
        Runnable r2 = () -> System.out.println("r2");
        r2.run();
        
        //Runnable r3 = () -> System.out::println;
    }
    
    
    @Test
    public void test2(){
        List<String> threeHighCaloricDishNames = Dish.menu.stream().filter(d -> d.getCalories() > 300).map(d -> d.getName()).map(d -> d.toUpperCase()).limit(3).collect(toList());
        System.out.println(threeHighCaloricDishNames);
        
        List<String> vegDishNames = Dish.menu.stream().filter(d -> d.isVegetarian()).map(d -> d.getName()).collect(toList());
        System.out.println(vegDishNames);
        
        List<String> skipFirstTwoHighCaloricDishNames = Dish.menu.stream().filter(d -> d.getCalories() > 300).map(d -> d.getName()).map(d -> d.toUpperCase()).skip(2).collect(toList());
        System.out.println(skipFirstTwoHighCaloricDishNames);
        
        List<String> words = Arrays.asList("Java8", "Lambdas", "In", "Action");
        List<Integer> worldLengths = words.stream().map(s -> s.length()).collect(toList());
        System.out.println(worldLengths);
        
        List<Integer> dishNameLengths = Dish.menu.stream().map(d -> d.getName()).map(s -> s.length()).collect(toList());
        System.out.println(dishNameLengths);
        
//      List<String> distinctWords = words.stream().map(s -> s.split("")).distinct().collect(toList());
//      List<String[]> distinctWords = words.stream().map(s -> s.split("")).distinct().collect(toList());
//      System.out.println(distinctWords);
        
//      List<Stream<String>> distinctWords = words.stream().map(s->s.split("")).map(s->Arrays.stream(s)).distinct().collect(toList());
//      System.out.println(distinctWords);
        
        List<String> distinctWords = words.stream().map(s->s.split("")).flatMap(s->Arrays.stream(s)).map(s->s.toLowerCase()).distinct().collect(toList());
        System.out.println(distinctWords);
    }
    
    @Test
    public void temp(){
        Arrays.stream("nikhil".split("")).forEach(s -> System.out.println(s));
    }
    

    
    

}