Assigning values

 now(ZoneId) → quando quer hora de outro país

now(ZoneId) → when you want the time of another country

.now()

Gets the current date or time from the system.

.of()

Creates a date/time by passing numbers.

.parse()

Converts a String into a date/time object

 

✅ .now() → when you need the current moment

You use it when the system needs to know:

• today’s date

• the current time

• the exact moment of a purchase

• whether something is overdue

Real examples:

LocalDate today = LocalDate.now();
LocalDateTime purchaseMoment = LocalDateTime.now();

 

📌 Commonly used in:

• payment systems

• due date verification

• logging systems

 

✅ .of() → when you already know the values

You use it when:

• you are creating a fixed date

• you are testing your code

• you are defining a specific rule

LocalDate dueDate = LocalDate.of(2026, 5, 15);

 

📌 Commonly used in:

• unit tests

• system-defined dates

• calculated or predefined dates

 

                                                                                      ✅ .parse() → when the date comes as TEXT

You use it when:

• you receive a date from the user

• you receive a date from a database

• you receive a date from an API

• you read a date from a file

 

Example:

LocalDate date = LocalDate.parse("2026-05-15");

📌 Commonly used in:

• forms

• system integration

• JSON data processing