First Java Program - Input/Output, Debugging and Datatypes

Description:

In this video we run our first Java program from scratch, providing a hands on demo of every step. We cover input and output in Java, data types, type conversion and casting, debugging, control flow, loops, and also solve a few problems. Take part in the learning in public initiative! Share your learnings on LinkedIn and Twitter with #DSAwithKunal & don't forget to tag us! 👉 Resources - Join Replit: - Complete Java DSA playlist: - Code, Assignments, & Notes: ➡️ Connect with me: ========================================= Timestamps: 0:00 Introduction 1:32 Creating .java file 1:11 Setting Up Few Things 3:07 Structure of Java File 7:57 Creating Main Function 9:58 Writing First Line of Code (Printing "Hello Word!") 10:37 Converting .java to .class (Byte Code) 12:23 Running Main.class 12:40 Explanation of words of the Program 12:59 What is 'public' (1st line)? 13:12 What is 'class'? 13:30 What is 'Main' in this code 13:56 What is 'main function'? 14:35 What is 'public' (2nd line)? 15:06 What is 'static'? 18:24 What is 'void'? 19:07 Array and Arguments 21:00 Changing Location of Byte Code 22:25 Location of 'javac' and 'java' 24:31 Environment Variable PATH 27:25 Starting with IntelliJ IDEA 29:49 Some Shortcuts 30:17 What is a 'package'? 32:42 What is 'System.out.println()'? 34:45 Outputs in Java 39:25 Inputs in Java 46:40 Primitive Data Types in Java 54:14 Comments in Java 55:08 Int Input Program 59:47 Literals and Identifiers 1:01:18 String Input Program 1:02:38 Float Input Program 1:04:39 Sum of Two Numbers 1:07:30 Type Conversion and Casting 1:07:48 Type Conversion 1:08:39 Conditions for Type Conversion 1:10:24 Typecasting 1:12:20 Automatic Type Promotion in Expressions 1:18:25 Java follows Unicode 1:19:20 Rules for Type Promotion 1:21:18 Example for thorough review of concepts 1:25:00 Basics of while loops and for loops 1:25:13 if condition 1:26:00 while loops 1:27:19 for loops 1:28:03 When to use - while loop and for loop 1:28:45 Temperature Conversion Program 1:31:52 Outro #java #placement #dsa #interviews