Java Control Statements | Lec-3| If, If-Else, Else-If, Loops & Jumping stat | JavaWithVaibhavMastar

Описание: The video lecture is about Java control flow statements, covering decision-making statements and loops.

Control Statements:
Control statements are also called execution control flow statements.
Without control statements, the program executes line by line.
Control statements are a means of decision-making.
The speaker mentioned the use of if, else, and multiple conditions with else if.
Loops:
Loops are important.
The main purpose of loops is to decrease the number of lines of code.
Loops repeat a block of code again and again until a condition becomes false.
The components of a loop include initialization, condition, and increment/decrement.
Initialization means the starting point.
Condition means the ending point.
Increment/decrement means increasing or decreasing the value, or how to proceed.
Types of Loops Discussed:
For Loop: Used when the number of iterations or count is known.
Syntax includes initialization, condition, and increment/decrement within the for statement.
An example was used to print numbers from 10 to 20 using a for loop, demonstrating initialization with $I = 10$, condition $I \le 20$, and increment $I++$.
Another example was used to print a series starting at 2, ending at 20, with a difference of 3 (e.g., 2, 5, 8, 11, 14, 17, 20), using $I += 3$ for the increment/decrement.
While Loop: Used when the number of iterations is not known.
The condition and whether the loop becomes false is what the execution depends on.
Syntax: while (condition) followed by the code block, with initialization before the while and increment/decrement inside the block.
An example of an ATM withdrawal process was used to illustrate a situation where the count is unknown, and the loop continues as long as the balance is greater than zero.
Do-While Loop: Guarantees that the code block is executed at least once, even if the initial condition is false.
The do block executes first, and then the while condition is checked.
Jumping Statements:
These are used to jump to a different location in the flow of control.
Jumping statements include break, continue, and return.
Break: Used to stop the loop execution.
Continue: Used to skip the current iteration and proceed to the next.
Return: Used to return a value and exit the method.