[Training Video - 2] [Java Introduction] [Install Java and Eclipse, Create Class]

Download Java : https://java.com/en/download/

Download Eclipse : https://www.eclipse.org/downloads/

Code : 

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public class FirstJavaClass {       // function     public static void main(String[] args) {                   System.out.println("hello world");         // syso ->  cntrl+space         System.out.println(65465);                   // DATATYPES         int x = 100; // cannot store decimals - 32 bits         System.out.println(x);         x=200;          System.out.println(x);                   long var =3000L;// cannot store decimals - 64 bits         char c='y'; // just one place         boolean b=true; // true or false                   System.out.println(3>12);                   int q=100;         int w=200;                   boolean x1=q>w;                   System.out.println(x1);                   // IF statements         if(q<w){             System.out.println("q is lesser");         }else if(q==w){             System.out.println("q is equal to w");         }else{             System.out.println("q is greater");         }                   // STRING class         String str = "hello how are you";     } }

　　

Result :

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hello world 65465 100 200 false false q is lesser