2026 Valid 1z1-809 FREE EXAM DUMPS QUESTIONS & ANSWERS [Q99-Q116]

2026 Valid 1z1-809 FREE EXAM DUMPS QUESTIONS & ANSWERS

Free 1z1-809 Exam Braindumps Oracle  Pratice Exam

Oracle 1z0-809 exam is a certification exam for Java programmers who want to demonstrate their advanced knowledge and skills in Java programming. 1z1-809 exam is designed for those who have already passed the Oracle 1z0-808 exam and want to further their understanding of Java SE 8 programming concepts. Passing the 1z0-809 exam will provide certification as a Java SE 8 Programmer II.

Oracle 1z0-809 exam is a certification exam for Java programmers who have already passed the Java SE 8 Programmer I exam. It is designed to test the advanced skills and knowledge required for building robust and scalable Java applications. Passing 1z1-809 exam is a great achievement for any Java developer, as it demonstrates their expertise and proficiency in Java programming.

 

NO.99 Given the code fragment:
public static void main (String[] args) throws IOException {
BufferedReader brCopy = null;
try (BufferedReader br = new BufferedReader (new FileReader
(“employee.txt”))) { //
line n1
br.lines().forEach(c -> System.out.println(c));
brCopy = br; //line n2
}
brCopy.ready(); //line n3;
}
Assume that the ready method of the BufferedReader, when called on a closed BufferedReader, throws an exception, and employee.txt is accessible and contains valid text.
What is the result?

 
 
 
 

NO.100 Given the code fragment:
public static void main (String [ ] args) throws IOException {
BufferedReader br = new BufferedReader (new InputStremReader
(System.in));
System.out.print (“Enter GDP: “);
//line 1
}
Which code fragment, when inserted at line 1, enables the code to read the GDP from the user?

 
 
 
 

NO.101 Given the code fragment:

What is the result?

 
 
 
 

NO.102 Which statement is true about the single abstract method of the java.util.function.Function interface?

 
 
 
 

NO.103 Given the code fragment:

What is the result?

 
 
 
 

NO.104 Given that these files exist and are accessible:

and given the code fragment:

Which code fragment can be inserted at line n1 to enable the code to print only /company/emp?

 
 
 
 

NO.105 Given the code fragment:
public class Foo {
public static void main (String [ ] args) {
Map<Integer, String> unsortMap = new HashMap< > ( );
unsortMap.put (10, “z”);
unsortMap.put (5, “b”);
unsortMap.put (1, “d”);
unsortMap.put (7, “e”);
unsortMap.put (50, “j”);
Map<Integer, String> treeMap = new TreeMap <Integer, String> (new
Comparator<Integer> ( ) {
@Override public int compare (Integer o1, Integer o2) {return
o2.compareTo
(o1); } } );
treeMap.putAll (unsortMap);
for (Map.Entry<Integer, String> entry : treeMap.entrySet () ) {
System.out.print (entry.getValue () + ” “);
}
}
}
What is the result?

 
 
 
 

NO.106 Given the code fragments:
interface CourseFilter extends Predicate<String> {
public default boolean test (String str) {
return str.equals (“Java”);
}
}
and
List<String> strs = Arrays.asList(“Java”, “Java EE”, “Java ME”);
Predicate<String> cf1 = s – > s.length() > 3;
Predicate cf2 = new CourseFilter() { //line n1
public boolean test (String s) {
return s.contains (“Java”);
}
};
long c = strs.stream()
.filter(cf1)
.filter(cf2 //line n2
.count();
System.out.println(c);
What is the result?

 
 
 
 

NO.107 Given the Greetings.propertiesfile, containing:

and given:

What is the result?

 
 
 
 
 

NO.108 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?

 
 
 
 

NO.109 Given the records from the Employee table:

and given the code fragment:
try {
Connection conn = DriverManager.getConnection (URL, userName, passWord);
Statement st = conn.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,
ResultSet.CONCUR_UPDATABLE);
st.execute(“SELECT*FROM Employee”);
ResultSet rs = st.getResultSet();
while (rs.next()) {
if (rs.getInt(1) ==112) {
rs.updateString(2, “Jack”);
}
}
rs.absolute(2);
System.out.println(rs.getInt(1) + ” ” + rs.getString(2));
} catch (SQLException ex) {
System.out.println(“Exception is raised”);
}
Assume that:
The required database driver is configured in the classpath.
The appropriate database accessible with the URL, userName, and passWord exists.
What is the result?

 
 
 
 

NO.110 Given the definition of the Emp class:
public class Emp
private String eName;
private Integer eAge;
Emp(String eN, Integer eA) {
this.eName = eN;
this.eAge = eA;
}
public Integer getEAge () {return eAge;}
public String getEName () {return eName;}
}
and code fragment:
List<Emp>li = Arrays.asList(new Emp(“Sam”, 20), New Emp(“John”, 60), New Emp(“Jim”, 51)); Predicate<Emp> agVal = s -> s.getEAge() <= 60;//line n1 li = li.stream().filter(agVal).collect(Collectors.toList()); Stream<String> names = li.stream()map.(Emp::getEName);//line n2 names.forEach(n -> System.out.print(n + ” “)); What is the result?

 
 
 
 

NO.111 Given:

What is the result?

 
 
 
 

NO.112 Given the code fragment:

What is the result?

 
 
 
 

NO.113 Given the code fragment:
public static void main (String [ ] args) throws IOException {
BufferedReader br = new BufferedReader (new InputStremReader (System.in)); System.out.print (“Enter GDP: “);
//line 1
}
Which code fragment, when inserted at line 1, enables the code to read the GDP from the user?

 
 
 
 

NO.114 Given:

Which option fails?

 
 
 
 

NO.115 Which statement is true about the DriverManagerclass?

 
 
 
 

NO.116 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?

 
 
 
 

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