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# ๐ Java Programming Language โ Part 3/10: Methods & Functions #Java #Programming #Methods #Functions #OOP Welcome to Part 3 of our Java series! Today we'll dive into methods - the building blocks of Java programs. --- ## ๐น What are Methods in Java? Methodsโฆ
### ๐ What's Next?
In Part 5, we'll cover:
โก๏ธ Inheritance
โก๏ธ Method Overriding
โก๏ธ super Keyword
โก๏ธ Abstract Classes
#JavaOOP #ObjectOriented #ProgrammingBasics ๐
In Part 5, we'll cover:
โก๏ธ Inheritance
โก๏ธ Method Overriding
โก๏ธ super Keyword
โก๏ธ Abstract Classes
#JavaOOP #ObjectOriented #ProgrammingBasics ๐
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# ๐ Java Programming Language โ Part 4/10: Object-Oriented Programming (OOP) Basics #Java #OOP #Programming #Classes #Objects Welcome to Part 4 of our Java series! Today we'll explore the fundamentals of Object-Oriented Programming in Java. --- ## ๐น Whatโฆ
## ๐น Practical Example: Employee Hierarchy
---
## ๐น Best Practices for Inheritance
1. Favor Composition Over Inheritance - When possible
2. Keep Inheritance Hierarchies Shallow - Avoid deep inheritance trees
3. Use Abstract Classes for Partial Implementations
4. Document Overridden Methods Properly
5. Follow Liskov Substitution Principle - Subclass should be substitutable for superclass
---
### ๐ What's Next?
In Part 6, we'll cover:
โก๏ธ Interfaces
โก๏ธ Abstract Classes
โก๏ธ Difference Between Interfaces and Abstract Classes
#JavaOOP #Inheritance #Polymorphism๐
class Employee {
String name;
double salary;
public Employee(String name, double salary) {
this.name = name;
this.salary = salary;
}
public void work() {
System.out.println(name + " is working...");
}
}
class Manager extends Employee {
String department;
public Manager(String name, double salary, String dept) {
super(name, salary);
this.department = dept;
}
@Override
public void work() {
System.out.println(name + " is managing " + department);
}
public void conductMeeting() {
System.out.println("Conducting department meeting");
}
}
// Usage:
Employee emp1 = new Employee("Ahmed", 5000);
Manager mgr1 = new Manager("Fatima", 8000, "Marketing");
emp1.work(); // "Ahmed is working..."
mgr1.work(); // "Fatima is managing Marketing"
mgr1.conductMeeting();---
## ๐น Best Practices for Inheritance
1. Favor Composition Over Inheritance - When possible
2. Keep Inheritance Hierarchies Shallow - Avoid deep inheritance trees
3. Use Abstract Classes for Partial Implementations
4. Document Overridden Methods Properly
5. Follow Liskov Substitution Principle - Subclass should be substitutable for superclass
---
### ๐ What's Next?
In Part 6, we'll cover:
โก๏ธ Interfaces
โก๏ธ Abstract Classes
โก๏ธ Difference Between Interfaces and Abstract Classes
#JavaOOP #Inheritance #Polymorphism
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