问Java 8提供了Stream API、Lambda以及与java 7的简明代码比较

EN

//Exaple 1
//Traditional Way
interface SampleInterface {
    public void sampleMethod();
}

public class SampleClass implements SampleInterface {
    @Override
    public void sampleMethod() {
        // Implementation Logic
    }
}

//Using Lambda expression and Functional Interface
@FunctionalInterface
interface SampleInterface {
    public void sampleMethod();
}

public class SampleClass {
    public static void main(String[] args) {
        SampleInterface sf = () -> {System.out.println("Implementation of interface method");};
    }
}


//Example 2
Comparator<Student> c = (s1, s2) -> {return (s1.age < s2.age ? -1 : (s1.age > s2.age) ? 1 : 0 );};


//Example 3
//Using Stream API
List<Employee> newList = empList.stream().sorted((v1, v2) -> (v2.id < v1.id) ? -1 : (v2.id > v1.id) ? 1 : 0).collect(Collectors.toList());

//Using comparator 
Collections.sort(list, comparator);