I have started this course from Udemy and will complete soon with all my effort In Sha Allah:
Book Recommendation: Effective Java, Second Edition, Joshua Bloch
Harnessing Java by Kishori Shoron
Head First Java
1st video:
Installed JDK
Environment Setup
Made Hello.java with Notepad++
then done javac Hello from cmd:
It made Hello class which is platform independent
2nd Video:
public class HelloWorld1{
public static void main(String[] args){
System.out.println("Hello World!!");
}
}
//when it has public modifier then you need to make the file name
//and class name same if it is not then it's okay
E:\javaudemy>javac Hello.java
Hello.java:1: error: class HelloWorld1 is public, should be declared in a file named HelloWorld1.java
public class HelloWorld1{
^
1 error
Installing Intellij and Setup for Running Java Application:
Section:3 Classes and Objects
package com.javalearn.fromudemybyheart;
public class Demo {
static void print() {
System.out.println("\n\nInside Print......");
System.out.println("Hello World!!");
System.out.println();
System.out.print("Hello World");
System.out.println(" "); //Print a space
System.out.print("World!!"); /* */
}
public static void main(String[] args) {
print();
int i = 6;
int j = 5;
System.out.println(i + j);
System.out.println(i * j);
System.out.println(i - j);
System.out.println(i / j); //System is a class in java library and out is a variable in System class
System.out.println(i % j);
}
}
2d Array and 3D array some problem but will clear later now I should move on with other topics.
