1z1-809 무료 덤프문제 온라인 액세스

Given:
class Student {
String course, name, city;
public Student (String name, String course, String city) {
this.course = course; this.name = name; this.city = city;
}
public String toString() {
return course + ":" + name + ":" + city;
}
public String getCourse() {return course;}
public String getName() {return name;}
public String getCity() {return city;}
and the code fragment:
List<Student> stds = Arrays.asList(
new Student ("Jessy", "Java ME", "Chicago"),
new Student ("Helen", "Java EE", "Houston"),
new Student ("Mark", "Java ME", "Chicago"));
stds.stream()
.collect(Collectors.groupingBy(Student::getCourse))
.forEach(src, res) -> System.out.println(res));
What is the result?

• A.[Java EE: Helen:Houston][Java ME: Jessy:Chicago, Java ME: Mark:Chicago]
• B.A compilation error occurs.
• C.[Java ME: Jessy:Chicago, Java ME: Mark:Chicago][Java EE: Helen:Houston]
• D.Java EEJava ME

Given the code fragment:
ZonedDateTime depart = ZonedDateTime.of(2015, 1, 15, 3, 0, 0, 0, ZoneID.of("UTC-7")); ZonedDateTime arrive = ZonedDateTime.of(2015, 1, 15, 9, 0, 0, 0, ZoneID.of("UTC-5")); long hrs = ChronoUnit.HOURS.between(depart, arrive); //line n1 System.out.println("Travel time is" + hrs + "hours"); What is the result?

• A.Travel time is 8 hours
• B.An exception is thrown at line n1.
• C.Travel time is 6 hours
• D.Travel time is 4 hours

Given the code fragment:

What is the result?

• A.Java EEJava EESE
• B.Java EEJava SE
• C.Java EESE
• D.The program prints either:Java EEJava SEorJava SEJava EE

Given:
public class Test<T> {
private T t;
public T get () {
return t;
}
public void set (T t) {
this.t = t;
}
public static void main (String args [ ] ) {
Test<String> type = new Test<>();
Test type 1 = new Test ();//line n1
type.set("Java");
type1.set(100);//line n2
System.out.print(type.get() + " " + type1.get());
}
}
What is the result?

• A.Java 100
• B.A compilation error occurs. To rectify it, replace line n1 with:Test<Integer> type1 = new Test<>();
• C.java.lang.string@<hashcode>java.lang.Integer@<hashcode>
• D.A compilation error occurs. To rectify it, replace line n2 with:type1.set (Integer(100));

Given:
class RateOfInterest {
public static void main (String[] args) {
int rateOfInterest = 0;
String accountType = "LOAN";
switch (accountType) {
case "RD";
rateOfInterest = 5;
break;
case "FD";
rateOfInterest = 10;
break;
default:
assert false: "No interest for this account"; //line n1
}
System.out.println ("Rate of interest:" + rateOfInterest);
}
}
and the command:
java -ea RateOfInterest
What is the result?

• A.No interest for this account
• B.A compilation error occurs at line n1.
• C.An AssertionError is thrown.
• D.Rate of interest: 0