Oracle 1z0-809 actual dump : Java SE 8 Programmer II

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(scr));
What is the result?

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

Given:

and the code fragment:

What is the result?

• A. A compilation error occurs because the try block doesn't have a catch or finally block.
• B. The program compiles successfully.
• C. A compilation error occurs at line n1.
• D. A compilation error occurs at line n2.

The data.doc, data.txt and data.xml files are accessible and contain text.
Given the code fragment:
Stream<Path> paths = Stream.of (Paths. get("data.doc"),
Paths. get("data.txt"),
Paths. get("data.xml"));
paths.filter(s-> s.toString().endWith("txt")).forEach(
s -> {
try {
Files.readAllLines(s)
.stream()
.forEach(System.out::println); //line n1
} catch (IOException e) {
System.out.println("Exception");
}
}
);
What is the result?

• A. The program prints the content of the three files.
• B. A compilation error occurs at line n1.
• C. The program prints the content of data.txt file.
• D. The program prints:Exception<<The content of the data.txt file>>Exception

Given the code fragment:
List<String> empDetails = Arrays.asList("100, Robin, HR",
"200, Mary, AdminServices",
"101, Peter, HR");
empDetails.stream()
.filter(s-> s.contains("1"))
.sorted()
.forEach(System.out::println); //line n1
What is the result?

• A. E. A compilation error occurs at line n1.
• B. 100, Robin, HR101, Peter, HR
• C. 100, Robin, HR101, Peter, HR200, Mary, AdminServices
• D. 100, Robin, HR200, Mary, AdminServices101, Peter, HR

Given the code fragments:
class Caller implements Callable<String> {
String str;
public Caller (String s) {this.str=s;}
public String call()throws Exception { return str.concat ("Caller");}
}
class Runner implements Runnable {
String str;
public Runner (String s) {this.str=s;}
public void run () { System.out.println (str.concat ("Runner"));}
}
and
public static void main (String[] args) throws InterruptedException, ExecutionException { ExecutorService es = Executors.newFixedThreadPool(2); Future f1 = es.submit (new Caller ("Call")); Future f2 = es.submit (new Runner ("Run")); String str1 = (String) f1.get(); String str2 = (String) f2.get();//line n1 System.out.println(str1+ ":" + str2);
}
What is the result?

• A. The program prints:Run RunnerCall Caller : nullAnd the program does not terminate.
• B. An Execution is thrown at run time.
• C. The program terminates after printing:Run RunnerCall Caller : Run
• D. A compilation error occurs at line n1.