[UPDATED Aug-2025] Best Value Available Preparation Guide for 1z1-830 Exam [Q39-Q58]

NEW QUESTION 39
Given:
var cabarets = new TreeMap<>();
cabarets.put(1, “Moulin Rouge”);
cabarets.put(2, “Crazy Horse”);
cabarets.put(3, “Paradis Latin”);
cabarets.put(4, “Le Lido”);
cabarets.put(5, “Folies Bergere”);
System.out.println(cabarets.subMap(2, true, 5, false));
What is printed?

NEW QUESTION 40
Given:
java
var frenchCities = new TreeSet<String>();
frenchCities.add(“Paris”);
frenchCities.add(“Marseille”);
frenchCities.add(“Lyon”);
frenchCities.add(“Lille”);
frenchCities.add(“Toulouse”);
System.out.println(frenchCities.headSet(“Marseille”));
What will be printed?

NEW QUESTION 41
Given:
java
ExecutorService service = Executors.newFixedThreadPool(2);
Runnable task = () -> System.out.println(“Task is complete”);
service.submit(task);
service.shutdown();
service.submit(task);
What happens when executing the given code fragment?

NEW QUESTION 42
Given:
java
public class ThisCalls {
public ThisCalls() {
this(true);
}
public ThisCalls(boolean flag) {
this();
}
}
Which statement is correct?

NEW QUESTION 43
Given:
java
var ceo = new HashMap<>();
ceo.put(“Sundar Pichai”, “Google”);
ceo.put(“Tim Cook”, “Apple”);
ceo.put(“Mark Zuckerberg”, “Meta”);
ceo.put(“Andy Jassy”, “Amazon”);
Does the code compile?

NEW QUESTION 44
Which two of the following aren’t the correct ways to create a Stream?

NEW QUESTION 45
Given:
java
Stream<String> strings = Stream.of(“United”, “States”);
BinaryOperator<String> operator = (s1, s2) -> s1.concat(s2.toUpperCase()); String result = strings.reduce(“-“, operator); System.out.println(result); What is the output of this code fragment?

NEW QUESTION 46
Given:
java
public class Test {
class A {
}
static class B {
}
public static void main(String[] args) {
// Insert here
}
}
Which three of the following are valid statements when inserted into the given program?

NEW QUESTION 47
Given:
java
final Stream<String> strings =
Files.readAllLines(Paths.get(“orders.csv”));
strings.skip(1)
.limit(2)
.forEach(System.out::println);
And that the orders.csv file contains:
mathematica
OrderID,Customer,Product,Quantity,Price
1,Kylian Mbappe,Keyboard,2,25.50
2,Teddy Riner,Mouse,1,15.99
3,Sebastien Loeb,Monitor,1,199.99
4,Antoine Griezmann,Headset,3,45.00
What is printed?

NEW QUESTION 48
Given:
java
Period p = Period.between(
LocalDate.of(2023, Month.MAY, 4),
LocalDate.of(2024, Month.MAY, 4));
System.out.println(p);
Duration d = Duration.between(
LocalDate.of(2023, Month.MAY, 4),
LocalDate.of(2024, Month.MAY, 4));
System.out.println(d);
What is the output?

NEW QUESTION 49
Which of the following java.io.Console methods doesnotexist?

NEW QUESTION 50
Given:
java
record WithInstanceField(String foo, int bar) {
double fuz;
}
record WithStaticField(String foo, int bar) {
static double wiz;
}
record ExtendingClass(String foo) extends Exception {}
record ImplementingInterface(String foo) implements Cloneable {}
Which records compile? (Select 2)

NEW QUESTION 51
Given:
java
Optional o1 = Optional.empty();
Optional o2 = Optional.of(1);
Optional o3 = Stream.of(o1, o2)
.filter(Optional::isPresent)
.findAny()
.flatMap(o -> o);
System.out.println(o3.orElse(2));
What is the given code fragment’s output?

NEW QUESTION 52
Given:
java
Optional<String> optionalName = Optional.ofNullable(null);
String bread = optionalName.orElse(“Baguette”);
System.out.print(“bread:” + bread);
String dish = optionalName.orElseGet(() -> “Frog legs”);
System.out.print(“, dish:” + dish);
try {
String cheese = optionalName.orElseThrow(() -> new Exception());
System.out.println(“, cheese:” + cheese);
} catch (Exception exc) {
System.out.println(“, no cheese.”);
}
What is printed?

NEW QUESTION 53
Given:
java
Runnable task1 = () -> System.out.println(“Executing Task-1”);
Callable<String> task2 = () -> {
System.out.println(“Executing Task-2”);
return “Task-2 Finish.”;
};
ExecutorService execService = Executors.newCachedThreadPool();
// INSERT CODE HERE
execService.awaitTermination(3, TimeUnit.SECONDS);
execService.shutdownNow();
Which of the following statements, inserted in the code above, printsboth:
“Executing Task-2” and “Executing Task-1”?

NEW QUESTION 54
Given:
java
var lyrics = “””
Quand il me prend dans ses bras
Qu’il me parle tout bas
Je vois la vie en rose
“””;
for ( int i = 0, int j = 3; i < j; i++ ) {
System.out.println( lyrics.lines()
.toList()
.get( i ) );
}
What is printed?

NEW QUESTION 55
Given:
java
var hauteCouture = new String[]{ “Chanel”, “Dior”, “Louis Vuitton” };
var i = 0;
do {
System.out.print(hauteCouture[i] + ” “);
} while (i++ > 0);
What is printed?

NEW QUESTION 56
Given:
java
public class OuterClass {
String outerField = “Outer field”;
class InnerClass {
void accessMembers() {
System.out.println(outerField);
}
}
public static void main(String[] args) {
System.out.println(“Inner class:”);
System.out.println(“————“);
OuterClass outerObject = new OuterClass();
InnerClass innerObject = new InnerClass(); // n1
innerObject.accessMembers(); // n2
}
}
What is printed?

NEW QUESTION 57
Given:
java
interface A {
default void ma() {
}
}
interface B extends A {
static void mb() {
}
}
interface C extends B {
void ma();
void mc();
}
interface D extends C {
void md();
}
interface E extends D {
default void ma() {
}
default void mb() {
}
default void mc() {
}
}
Which interface can be the target of a lambda expression?

NEW QUESTION 58
Given:
java
System.out.print(Boolean.logicalAnd(1 == 1, 2 < 1));
System.out.print(Boolean.logicalOr(1 == 1, 2 < 1));
System.out.print(Boolean.logicalXor(1 == 1, 2 < 1));
What is printed?