Interface with default method
public interface InterfaceDefault {
default void foo(){
System.out.println("Calling A.foo()");
}
array parallel sort
int[] myArray=new int [10]; for (int i=0;i<10;i++) myArray[i]= (int) (Math.random()*100); Arrays.parallelSort(myArray);
lambda expressions
Runnable java8Runner = () ->{
System.out.println("I am running");
};
java8Runner.run();
new timer type
ZoneId zone = ZoneId.of("Europe/Berlin");
Clock clock = Clock.system(zone);
System.out.print(clock.millis());
LocalDate date = LocalDate.now();
System.out.printf(" %s-%s-%s",
date.getYear(), date.getMonthValue(), date.getDayOfMonth()
);
Stream and paralllel stream like groovy closures
Function<Person, Job> mapPersonToJob = new Function<Person, Job>() {
public Job apply(Person person) {
Job job = new Job(person.getPersonId(), person.getJobDescription());
return job;
}
};
java.util.function.Predicate<? super Person> p1 = e -> e.getPersonId() < 6 ;
java.util.function.Predicate<? super Person> p2 = e -> e.getPersonId() < 3 ;
boolean intMap = persons.parallelStream().allMatch(p1);
System.out.println("value:"+intMap);
List <Person> persone = persons.parallelStream().filter(p2).collect(Collectors.toList());
List<Job> jobs = persons.parallelStream().map(mapPersonToJob)
.collect(Collectors.toList());
Job job = mapPersonToJob.apply(person);
