Untitled Quiz

Following a plan is not part of the Agile Manifesto; responding to change is.

Creates and maintains the product backlog.

Conducts daily stand-up meetings to facilitate scrum.

Java Interpreter translates bytecode into machine code, while Java Compiler translates the entire Java program into bytecode at once.

A for loop with the condition a == 5 is invalid in Java.

Constructor with parameters, defining initialization of an object.

A for loop with a valid condition and increment/decrement

Count of unique characters.

Derived class can override the instance variable even if the same is in base class.

Splits a string and converts the first characters to uppercase.

The synchronized keyword in Java ensures that only one thread can execute a method or block of code at a time, preventing race conditions and ensuring thread safety.

The FileOutputStream class in Java allows writing data to a file. It creates a file if it doesn't exist or overwrites it if it does.

Java 8 introduced the ability to define default and static methods within interfaces. These methods can provide default implementations or utility functions.

SonarQube uses different severity levels to classify code issues. The severities indicate the impact and urgency of resolving the issue. Issues is not a SonarQube severity.

Java threads are independent units of execution within a program. The join() method in Java forces a thread to wait until another thread finishes execution.

The code snippet will print "c=1 c=2". The static variable c increments in the c() method, and each call to the constructor prints its value.

The i variable is declared with different values in interfaces. The A class implements I3, which has its own i. The output will be the value of i from I3 (3333). This issue arises from the conflicting declarations of i across the interfaces.

Attempting to divide by zero (1/0) in Java throws an ArithmeticException. The program will catch this exception and print "Standard Edition" instead of the original output.

The continue statement skips the rest of the loop's instructions for the current iteration. The finally block always executes, irrespective of exceptions. In this case, the loop runs only once, with i set to 0. The final output is "0 Continue".

A HashSet in Java can store unique elements (no duplicates). The elements can be of different types (string, number, boolean, null, etc.), as long as they are non-duplicitous.

The start() method in Java threads is used for making the thread ready and in a running state. A main method will execute the code first, then, another thread (ExamThread, in this case) can start executing as a separate processes in parallel or simultaneously. If two thread-like programs start, the execution ordering is unpredictable, and is often not deterministic. Each thread has its own execution path independent of others

Java Sets are used to store unordered collections of unique elements of different data types, including strings, numbers, booleans, or even null values.

When multiple threads run concurrently, the exact order in which their output appears on the console is generally unpredictable.