Basics of Java

Q: How can I learn the basics of Java easily?

To learn Java easily and efficiently, first understand its basics i.e. it’s object-oriented programming structure. Be patient while going through the concepts and be thorough with them. Try to practice Java code as much as possible as it will help you in developing confidence.

Q: How long does it take to be a java developer?

A Java developer can expect to work for one to four years. The time it takes to become a Java developer is mostly determined by the path they pursue and their aptitude. On average, it takes one to two years of at least three hours of daily code practice to become a confident Java developer.

Q: What are the main differences between the Java platform and other platforms?

Java is the software-based platform whereas other platforms may be the hardware platforms or software-based platforms. Java is executed on the top of other hardware platforms whereas other platforms can just contain the hardware components.

Q: Why is the Java platform independent?

Java is a platform-independent programming language because it uses Java Virtual Machine to run Java programs. Java source code is compiled to platform independent bytecode which can be interpreted by JVM on any platform.

Q: Why is Java not 100% Object-oriented?

Java is not fully object oriented because it supports primitive data types like it, byte, long etc., which are not objects.

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Key Points

Earn Certificate of completion

Average time to complete 25 days

Pre-requisites: Basic Aptitude And Enthusiasm To Learn

Module 1

Introduction to Java

6 Notes & 12 Problems

0/120

Introduction

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JDK, JRE and JVM

0/40

Attempt

How to run a Java Code?

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MCQs

0/80

Attempt

Module 2

Variables and Data types

8 Notes & 20 Problems

0/200

Introduction

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Keywords in Java

0/20

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Data Types in Java

0/40

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Scope of Variables in Java

0/40

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Types of Variables in Java

0/30

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TypeCasting in Java

0/40

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Overflow and Underflow in Java

0/30

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Module 3

Basic I/O in Java

2 Notes & 8 Problems

0/200

Taking User Input in Java

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MCQs

0/40

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Practice Problems

0/160

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Module 4

Operators in Java

9 Notes & 31 Problems

0/310

Introduction

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Arithmetic Operators

0/40

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Unary Operators

0/50

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Assignment Operators

0/40

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Relational Operators

0/40

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Logical Operators

0/30

Attempt

Bitwise Operators

0/40

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Ternary Operators

0/40

Attempt

Instance of Operators

0/30

Attempt

Module 5

Control Statements in Java

3 Notes & 31 Problems

0/650

Introduction and Selection Statements

0/80

Attempt

Practice Problems

0/160

Attempt

Iteration Statements

0/80

Attempt

Jump Statements

0/50

Attempt

Practice Problems

0/280

Attempt

Module 6

Methods in Java

5 Notes & 17 Problems

0/290

Introduction to Methods

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Types of Methods

0/40

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Parameters in Methods

0/40

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Method Overloading

0/50

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Practice Problems

0/160

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Module 7

Memory Allocation

2 Notes & 6 Problems

0/60

Introduction to Memory Allocation

0/30

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Garbage Collection in Java

0/30

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Module 8

Arrays

10 Notes & 16 Problems

0/340

Arrays

0/50

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Two-Dimensional Array

0/50

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Advantages and Disadvantages

View

Example Problems

View

Practice Problems

0/240

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Module 9

Strings

3 Notes & 16 Problems

0/310

Introduction to Strings

0/90

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Important Java Methods

0/20

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Practice Problems

0/200

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Module 10

Object Oriented Programming in Java

15 Notes & 55 Problems

0/940

Introduction

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Package in Java

0/40

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Access Modifiers in Java

0/40

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Classes and Objects in Java

0/40

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Static keyword in Java

0/40

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Final Keyword in Java

0/40

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Practice Problems

0/320

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Constructor in Java

0/90

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this and super Keywords in Java

0/40

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Instance Initialization block in Java

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Encapsulation in Java

0/40

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Inheritance in Java

0/120

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Polymorphism in Java

0/80

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Abstraction in Java

0/50

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Module 11

Exception Handling

8 Notes & 10 Problems

0/100

Introduction to Exception Handling

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Types of exceptions in Java

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Multiple catch block in Java

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Explicitly throw an exception in Java

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Finally block in Java

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User-defined exception in Java

View

MCQs

0/100

Attempt

Module 12

Collections in Java

12 Notes & 5 Problems

0/50

Introduction

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Why Java Collections

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Java Collection Framework Hierarchy

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MCQs

0/50

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Collection Algorithms

View

Example Problems

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Score 80% (Without penalty)

Frequently Asked Questions

How can I learn the basics of Java easily?

How long does it take to be a java developer?

What are the main differences between the Java platform and other platforms?

Why is the Java platform independent?

Why is Java not 100% Object-oriented?

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Introduction to Java

Introduction

JDK, JRE and JVM

How to run a Java Code?

MCQs

Variables and Data types

Introduction

Keywords in Java

Data Types in Java

Scope of Variables in Java

Types of Variables in Java

TypeCasting in Java

Overflow and Underflow in Java

Basic I/O in Java

Taking User Input in Java

MCQs

Practice Problems

Operators in Java

Introduction

Arithmetic Operators

Unary Operators

Assignment Operators

Relational Operators

Logical Operators

Bitwise Operators

Ternary Operators

Instance of Operators

Control Statements in Java

Introduction and Selection Statements

Practice Problems

Iteration Statements

Jump Statements

Practice Problems

Methods in Java

Introduction to Methods

Types of Methods

Parameters in Methods

Method Overloading

Practice Problems

Memory Allocation

Introduction to Memory Allocation

Garbage Collection in Java

Arrays

Arrays

Two-Dimensional Array

Advantages and Disadvantages

Example Problems

Practice Problems

Strings

Introduction to Strings

Important Java Methods

Practice Problems

Object Oriented Programming in Java

Introduction

Package in Java

Access Modifiers in Java

Classes and Objects in Java

Static keyword in Java

Final Keyword in Java

Practice Problems

Constructor in Java

this and super Keywords in Java

Instance Initialization block in Java

Encapsulation in Java

Inheritance in Java

Polymorphism in Java

Abstraction in Java

Exception Handling

Introduction to Exception Handling

Types of exceptions in Java

Multiple catch block in Java

Explicitly throw an exception in Java

Finally block in Java

User-defined exception in Java

MCQs

Collections in Java

Introduction

Why Java Collections

Java Collection Framework Hierarchy