Exam Code: 1Z0-809 (Practice Exam Latest Test Questions VCE PDF)
Exam Name: Java SE 8 Programmer II
Certification Provider: Oracle
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Q61. Given: What is the result?
A. 0 Done
B. First Exception Done
C. Second Exception
D. Done Third Exception
E. Third Exception
Answer: B
Q62. Which two statements are true for a two-dimensional array of primitive data type?
A. It cannot contain elements of different types.
B. The length of each dimension must be the same.
C. At the declaration time, the number of elements of the array in each dimension must be specified.
D. All methods of the class object may be invoked on the two-dimensional array.
Answer: C,D
Explanation: http://stackoverflow.com/questions/12806739/is-an-array-a-primitive-type-or-an-object-or-something-else-entirely
Q63. Given the code fragment:
Path path1 = Paths.get(“/app/./sys/”);
Path res1 = path1.resolve(“log”);
Path path2 = Paths.get(“/server/exe/”);
Path res1 = path1.resolve(“/readme/”);
System.out.println(res1);
System.out.println(res2);
What is the result?
A. /app/sys/log /readme/server/exe
B. /app/log/sys /server/exe/readme
C. /app/./sys/log /readme
D. /app/./sys/log /server/exe/readme
Answer: D
Q64. Given:
public class SampleClass {
public static void main(String[] args) {
AnotherSampleClass asc = new AnotherSampleClass(); SampleClass sc = new
SampleClass();
sc = asc;
System.out.println("sc: " + sc.getClass());
System.out.println("asc: " + asc.getClass());
}}
class AnotherSampleClass extends SampleClass {
}
What is the result?
A. sc: class Object asc: class AnotherSampleClass
B. sc: class SampleClass asc: class AnotherSampleClass
C. sc: class AnotherSampleClass asc: class SampleClass
D. sc: class AnotherSampleClass asc: class AnotherSampleClass
Answer: D
Q65. Given:
interface Doable {
public void doSomething (String s);
}
Which two class definitions compile?
A. public abstract class Task implements Doable {
public void doSomethingElse(String s) { }
}
B. public abstract class Work implements Doable {
public abstract void doSomething(String s) { }
public void doYourThing(Boolean b) { }
}
C. public class Job implements Doable {
public void doSomething(Integer i) { }
}
D. public class Action implements Doable {
public void doSomething(Integer i) { }
public String doThis(Integer j) { }
}
E. public class Do implements Doable {
public void doSomething(Integer i) { }
public void doSomething(String s) { }
public void doThat (String s) { }
}
Answer: C,D
Q66. Which statement is true about java.util.stream.Stream?
A. A stream cannot be consumed more than once.
B. The execution mode of streams can be changed during processing.
C. Streams are intended to modify the source data.
D. A parallel stream is always faster than an equivalent sequential stream.
Answer: B
Q67. Given the code fragment:
Path source = Paths.get (“/data/december/log.txt”);
Path destination = Paths.get(“/data”);
Files.copy (source, destination);
and assuming that the file /data/december/log.txt is accessible and contains:
10-Dec-2014 – Executed successfully
What is the result?
A. A file with the name log.txt is created in the /data directory and the content of the /data/december/log.txt file is copied to it.
B. The program executes successfully and does NOT change the file system.
C. A FileNotFoundException is thrown at run time.
D. A FileAlreadyExistsException is thrown at run time.
Answer: B
Q68. Given: What is the result?
A. 100 210
B. Compilation fails due to an error in line n1
C. Compilation fails due to an error at line n2
D. Compilation fails due to an error at line n3
Answer: C
Q69. What is the proper way to defined a method that take two int values and returns their sum as an int value?
A. int sum(int first, int second) { first + second; }
B. int sum(int first, second) { return first + second; }
C. sum(int first, int second) { return first + second; }
D. int sum(int first, int second) { return first + second; }
E. void sum (int first, int second) { return first + second; }
Answer: D
Q70. 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. java.lang.string@<hashcode>java.lang.Integer@<hashcode>
C. A compilation error occurs. To rectify it, replace line n1 with: Test<Integer> type1 = new Test<>();
D. A compilation error occurs. To rectify it, replace line n2 with: type1.set (Integer(100));
Answer: C
