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| Section | Objectives |
|---|---|
| Topic 1: Functional Programming | - Work with functional interfaces - Process data using Stream API - Use lambda expressions and method references |
| Topic 2: Annotations and JDBC | - Use built-in and custom annotations - Execute SQL operations and process results - Connect to databases using JDBC |
| Topic 3: Java I/O and NIO | - Process file system resources - Use Path, Files, and related APIs - Read and write files |
| Topic 4: Exception Handling | - Handle checked and unchecked exceptions - Use try-with-resources - Create custom exceptions |
| Topic 5: Controlling Program Flow | - Work with records and sealed classes - Apply decision statements and loops - Use switch expressions and pattern matching |
| Topic 6: Object-Oriented Programming | - Create and use classes, interfaces, enums, and records - Apply inheritance and polymorphism - Implement encapsulation and abstraction |
| Topic 7: Java Concurrency | - Create and manage threads - Work with concurrent collections and executors - Use virtual threads |
| Topic 8: Handling Date, Time, Text, Numeric and Boolean Values | - Use String, StringBuilder, and related APIs - Use date, time, duration, period, and localization APIs - Work with primitive wrappers and number formatting |
| Topic 9: Collections and Generics | - Use sequenced collections and maps - Apply generics and bounded types - Use List, Set, Map, Queue, and Deque implementations |
| Topic 10: Modules and Packaging | - Create and use Java modules - Package and deploy applications - Manage dependencies and exports |
Given:
java
String textBlock = """
j \
a \t
v \s
a \
""";
System.out.println(textBlock.length());
What is the output?
Correct Answer: D 🗳️
Explanation: Only visible for PrepAwayTest members. You can sign-up / login (it's free).
Given:
java
Integer frenchRevolution = 1789;
Object o1 = new String("1789");
Object o2 = frenchRevolution;
frenchRevolution = null;
Object o3 = o2.toString();
System.out.println(o1.equals(o3));
What is printed?
Correct Answer: D 🗳️
Explanation: Only visible for PrepAwayTest members. You can sign-up / login (it's free).
Given:
java
public class BoomBoom implements AutoCloseable {
public static void main(String[] args) {
try (BoomBoom boomBoom = new BoomBoom()) {
System.out.print("bim ");
throw new Exception();
} catch (Exception e) {
System.out.print("boom ");
}
}
@Override
public void close() throws Exception {
System.out.print("bam ");
throw new RuntimeException();
}
}
What is printed?
Correct Answer: B 🗳️
Explanation: Only visible for PrepAwayTest members. You can sign-up / login (it's free).
Given:
java
public class ExceptionPropagation {
public static void main(String[] args) {
try {
thrower();
System.out.print("Dom Perignon, ");
} catch (Exception e) {
System.out.print("Chablis, ");
} finally {
System.out.print("Saint-Emilion");
}
}
static int thrower() {
try {
int i = 0;
return i / i;
} catch (NumberFormatException e) {
System.out.print("Rose");
return -1;
} finally {
System.out.print("Beaujolais Nouveau, ");
}
}
}
What is printed?
Correct Answer: C 🗳️
Explanation: Only visible for PrepAwayTest members. You can sign-up / login (it's free).
Consider the following methods to load an implementation of MyService using ServiceLoader. Which of the methods are correct? (Choose all that apply)
Correct Answer: B,D 🗳️
Explanation: Only visible for PrepAwayTest members. You can sign-up / login (it's free).
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