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Oracle Java SE 8 Programmer II Sample Questions (Q19-Q24):

NEW QUESTION # 19
Given:

And given the commands:

What is the result?

A. Compilation fails.
B. Failure
C. Success
D. An exception is thrown at runtime.

Answer: B

NEW QUESTION # 20
Given the code fragments:
class Employee {
Optional<Address> address;
Employee (Optional<Address> address) {
this.address = address;
}
public Optional<Address> getAddress() { return address; }
}
class Address {
String city = “New York”;
public String getCity { return city: }
public String toString() {
return city;
}
}
and
Address address = null;
Optional<Address> addrs1 = Optional.ofNullable (address);
Employee e1 = new Employee (addrs1);
String eAddress = (addrs1.isPresent()) ? addrs1.get().getCity() : “City Not available”; What is the result?

A. null
B. A NoSuchElementException is thrown at run time.
C. City Not available
D. New York

Answer: C

NEW QUESTION # 21
Given the code fragment:

Assume that dbURL, userName, and passwordare valid.
Which code fragment can be inserted at line n1to enable the code to print Connection Established?

A. con = DriverManager.getConnection (userName, password, dbURL);
B. con = DriverManager.getConnection (dbURL);
con.setClientInfo ("user", userName);
con.setClientInfo ("password", password);
C. Properties prop = new Properties();
prop.put ("userid", userName);
prop.put ("password", password);
prop.put("url", dbURL);
con = DriverManager.getConnection (prop);
D. Properties prop = new Properties();
prop.put ("user", userName);
prop.put ("password", password);
con = DriverManager.getConnection (dbURL, prop);

Answer: D

NEW QUESTION # 22
Given the code fragment:
List<String> nL = Arrays.asList("Jim", "John", "Jeff");
Function<String, String> funVal = s -> "Hello : ".contact(s);
nL.Stream()
.map(funVal)
.peek(System.out::print);
What is the result?

A. A compilation error occurs.
B. Jim John Jeff
C. The program prints nothing.
D. Hello : Jim Hello : John Hello : Jeff

Answer: A

NEW QUESTION # 23
Given the code fragment:
List<String> colors = Arrays.asList("red", "green", "yellow");
Predicate<String> test = n - > {
System.out.println("Searching...");
return n.contains("red");
};
colors.stream()
.filter(c -> c.length() >= 3)
.allMatch(test);
What is the result?

A. Searching...
B. Searching...Searching...
C. Searching...Searching...Searching...
D. A compilation error occurs.

Answer: C

NEW QUESTION # 24
......

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Oracle Java SE 8 Programmer II Sample Questions (Q19-Q24):

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