JavaWith.NextlevelCoders

JDBC QUIZ Which of the following driver converts the JDBC calls into database-specific calls? A) Native API-partly Java Driver (Type 2) B) Net Protocol-pure Java Driver (Type 3) C) Native Protocol-pure Java Driver (Type 4) D) JDBC-ODBC Bridge Driver (Type 1) Guess the correct option in the comments!

👨‍💻 JDBC Quiz Which of the following is used to limit the number of rows returned ? A. getMaxrows(int i) B. getMinRows(int i) C. setMaxRows(int i) ⬇️ Guess the correct option in the comments!

Q. What are daemon threads in java ❓ In Java, a daemon thread is a thread that runs in the background, performing tasks that are not critical to the program's execution. Daemon threads are typically used for tasks such as: ========================== • Garbage collection • Memory management • Monitoring system resources • Providing services to other threads Characteristics of daemon threads ========================== 🔹 Run in the background Daemon threads run in the background, without blocking the main program's execution. 🔹 Low priority: Daemon threads have a lower priority than normal threads. 🔹 * *Don't prevent JVM termination**: If all non-daemon threads finish execution, the JVM can terminate even if daemon threads are still running. 🔹 Inherit daemon status: Threads created by a daemon thread are also daemon threads. ========================== To create a daemon thread in Java, you can use the ========================== ** setDaemon(true)** method on a Thread object before starting it: Thread thread = new Thread(() -> { // Perform background task }); thread.setDaemon(true); thread.start(); ` **Note that** daemon threnot suitable for tasks tasks** that require precise timing or critical execution, as they may be interrupted or terminated by the JVM at any time.

Java Keywords ========================= Keywords in Java are also known as reserved words. These are thepredefined words therefore they can’t be used as a variable name. If we will use keywords as a variable name, the result will be a compile-time error. The list of all the Java Keywords is given below.

Welcome to DSA & Interview Prep 23-Day Challenge! Join us for a 23-day journey to boost your coding skills and interview prep! JOIN =========👇🏻 https://whatsapp.com/channel/0029VakgEur9Bb61AvkwRs3e What to Expect ========================== - Daily 5-10 DSA questions, topic-wise - Interview questions to help you prepare and succeed Challenge Rules ========================== - Solve the daily questions and share your answers in the group - Stay consistent and track your progress Topics Covered: ========================== - Arrays, Strings, Linked Lists, Stacks, Queues, Trees, Graphs, and more! - System Design, Algorithms, and Data Structures Let's Grow Together! Join us now and take the first step towards cracking your dream coding interview! Share with your friends and fellow coders to join the challenge!

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What is the output of the following code? class Test { private void display() { System.out.println("Next Coders"); } } public class Solution { public static void main(String args[]) { Test obj = new Test(); obj.display(); } } A) Next Coders B) Compile-time Error C) Runtime Error D) None of the above Comment Correct Option ⬇️⬇️👇🏻

What is the output of the following code? class Test { int i; } public class Solution { public static void main(String args[]) { Test t; System.out.println(t.i); } } A) 0 B) garbage value C) Compile-time Error D) Runtime Error Comment Correct Option ⬇️

SQL Quiz 👩🏻‍💻👨🏻‍💻 Q.Which keyword is used to group rows based on a common column value❓ A. GROUP BY B. HAVING C. ORDER BY Choose Correct Option ⬇️

SQL Quiz 👨🏻‍💻👩🏻‍💻 Q.Which keyword is used to filter rows based on a specific condition❓ A. SELECT B. FROM C. WHERE Choose Correct Option ⬇️

👨‍💻 SQL Quiz Which SQL statement is used to remove a record from a table? A. REMOVE B. DELETE C. ERASE ⬇️ Guess the correct option in the comments!

Explain about static nested classes in java ❓ • When a static class is defined inside a enclosing class we define that as nested class. • Static nested classes are not inner classes. • Static nested classes can be instantiated without instance of outer class. • A static nested doesnot have access to instance variables and non static methods of outer class.

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