Gemini said Reinforcement Learning (RL) is a subset of machine learning where an agent learns to make decisions by performing actions in an environment to maximize a reward.

Unlike Supervised Learning (where the model is given the "right answer"), RL is based on trial and error. It is very similar to training a dog: you don't tell the dog exactly which muscles to move; you just give it a treat when it does something good and no treat when it doesn't.

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all from table

ACID properties in database management. It ensures that all operations within a transaction are completed successfully;

collecting and managing data from various sources into a centralized repository

A correlated subquery is a subquery that uses values from the outer query to complete its evaluation.

stored in multiple places. It can be intentional for backup and faster access, or accidental, leading to inconsistencies and higher storage costs. To minimize it, database normalization

to implement algorithms that work on different types while providing compile-time checks

creating interactive features in web pages

(Package-Private)

System:

A final class from the java.lang package.

Contains several useful class fields and methods.

out:

A static member of the System class.

An instance of PrintStream, which is used to output data to different destinations like the console.

println():

A method of the PrintStream class.

Prints a line of text to the output stream, followed by a new line.

he JVM specifically looks for the main method with the exact signature public static void main(String[] args). If a class contains multiple main methods with different signatures (i.e., overloading), the JVM will ignore those overloaded methods and only execute the one with the correct signature

A user thread (or non-daemon thread) is a thread that executes user-defined tasks and keeps running until the task is complete. Definition: A daemon thread is a background thread that runs in the JVM. It provides services to user threads, but it’s not critical to the application.

1. Primitive Data Types:
2. Static Methods and Fields:
3. Wrapper Classes:
4. Operator Overloading:

The stack is a region of memory that stores variables created by each function (including the main function) during its execution. On the other hand, a heap is a region of memory used for dynamic memory allocation, where blocks of memory are allocated and released in an arbitrary order.

Waiting for a Signal I/O Operations: Waiting to Enter a Synchronized Block/Method:

def, aim to primary feature loossly couple, stande alone code test in memory configuration

def provide configuration time

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