Salesforce Apex Programming Language

Explore how to compute simple interest in Apex by declaring integer and decimal variables for principal, years, and rate, applying the formula, and printing results with system.debug.

Explore Apex data types, including primitive types such as integer, long, decimal, double, boolean, date, and date time, collections (list, set, and map), s objects, enums, classes, objects, and interfaces.

Understand the apex date data type: declare date variables using date dot of new instance or today, and use add days, add years, add months, or days between.

Learn the date time data type in Apex, create values with datetime.newInstance(year, month, day, hour, minute, second) returning gmt, and format to the local timezone string.

Learn to use the DateTime class in Apex: create values with constructors, add hours/days/months/years, extract the date, and format to a local time zone string.

Explore the string data type in Apex, learn how single quotes define strings, index characters, concatenate, compare with equals, and use compare to for lexicographic order.

Explore apex operators, including assignment, addition, multiplication, subtraction, division, increment and decrement, boolean or and assignment, equals and triple equals, plus short-circuiting.

Explore how if-else statements in Apex evaluate conditions, execute if or else blocks, use braces for multiple statements, and apply examples like age checks and Sunday routines.

Learn how if else if ladders work in Apex, evaluate multiple conditions top to bottom, execute the first true block, or fall back to else when all fail.

Explore apex if-else logic to assign medals based on race position, awarding gold, silver, bronze, or no medal, with default null and debug outputs.

Explore how to calculate an employee's salary after a bonus in Apex using an if-else chain with thresholds: 15% for 150k+, 12% for 120k+, 10% for 100k+, and 5% otherwise.

Explore how Apex switch statements test an expression against multiple values and branch execution to matching blocks, with an optional default else when no values match.

Explore loops in Apex, including while, for, and do-while loops, focusing on boolean conditions and repeated execution with an example that prints a name ten times.

Learn to implement while loops in Apex with examples that print 1 through 10, increment using i++, and show reverse and stepping variations like increments by ten.

Master the Apex for loop by learning how initialization, condition, and increment (and decrement) sit in line, compare it with while loops, and review an example printing 1 to 5.

Demonstrates using a for loop in Apex to compute salary after bonuses from 5% to 20%, showing salary plus salary times bonus divided by 100 and the resulting values.

Demonstrate for loop in Apex with an example starting at ten, decrementing by two, and printing 10, 8, 6, 4, 2, 0 using system debug; explain initialization, condition, and decrement.

Identify an infinite loop in Apex where the condition never ends. Learn to avoid infinite loops by ensuring a terminating condition to prevent CPU time limit exceeded.

Explore the traditional for loop and the list or set iteration loops, and learn how lists differ from sets while iterating over elements in Apex.

Discover how break and continue control loops in apex. Break exits the loop; continue skips an iteration and moves to the next one, illustrated with a for loop example.

Explore nested loops by embedding a for loop inside another, using A as the outer and B as the inner, resetting B and printing A and B each iteration.

Demonstrate nested loops in Apex by using an outer loop from 1 to 4 and an inner loop up to i, printing i to create 1, 22, 333, 4444.

Master nested loops in Apex with a practical for loop example that prints incremental patterns using an outer loop and an inner loop to generate sequences.

Learn how a class serves as a blueprint for creating objects, using new to instantiate objects, and controlling them via reference variables, with non-static methods and instance variables.

Create an employee class with name and designation fields, instantiate two employees, assign values, and call a non-static show method to display each employee's name and designation.

Learn apex access modifiers, making fields private and exposing safe operations via public setters, with size validation and defaults. Understand private, protected, public, and global scopes.

Explore inheritance in Apex by defining a parent class with common features and extending it with child classes, demonstrating is-a relationships, method overriding, and code reuse through the vehicle example.

Explore the three Apex collections—lists, sets, and maps—showing how lists allow duplicates, sets prohibit duplicates, and maps store key-value pairs, with practical examples and debug outputs.