Java Language
@java_language_basic
10 subscribers
Download Telegram
About
Blog
Apps
Platform
Join
Java Language
10 subscribers
Java Language
Channel created
Java Language
Hello/Namaste everyone, this is our channel to teach , explore and learn Java language for all you guys in absolutely free .

We share our experience , knowledge and learnings in free in this channel about Java programming from basic . All you need to do is study step wise step and proceed further with your efforts and code in your life .

Hoping you guys will enjoy learn with us .

Sayonara,Good Luck
20 views
Java Language
public class Main {
public static void main(String [] args)
{
{System.out.println("Hello My code world Family,this is my first post");}
}
}


/* Every line of code that runs in Java must be inside a class.
And the class name should always start with an uppercase first letter.
In our example, we named the class Main.
*/

// The name of the java file must match the class name.

// The main() method is required and you will see it in every Java program:

// For now, just remember that every Java program has a class name which must match the filename, and that every program must contain the main() method.

// Inside the main() method, we can use the println() method to print a line of text to the screen:
17 viewsRoyal.., edited  
Java Language
public class Main {
    public static void main(String [] args)
    {
    {System.out.println("Hello K T ❤ bhai ");}
    {System.out.println("Hello Naresh bhai! ");}
    {System.out.print("Mahima ");}
    {System.out.print("Antriksh !");}         
    }
}


/* here main difference is println or print word.. Println mean next line and print mean continue line. */
❤1
22 viewsRoyal.., edited  
Java Language
public class Main{
    public static void main(String [] args){
        {System.out.println(5+7);}
    }
}


// output = 12
22 viewsRoyal.., edited  
Java Language
/* In Java, there are different types of variables, for example:

String - stores text, such as "Hello". String values are surrounded by double quotes

int - stores integers (whole numbers), without decimals, such as 123 or -123

float - stores floating point numbers, with decimals, such as 19.99 or -19.99

char - stores single characters, such as 'a' or 'B'. Char values are surrounded by single quotes

boolean - stores values with two states: true or false
*/


public class Main
{
    public static void main(String [] args)
    {
        String name;
        name= "Royal";
        {System.out.println(name);}
        
        int a,b,c;
        a=55;
        b=60;
        c=a+b;
        {System.out.println(name + c);}
    }
}


// output = Royal, Royal 115
24 viewsRoyal.., edited  
Java Language
int myNum = 5;
float myFloatNum = 5.99f;
char myLetter = 'D';
boolean myBool = true;
String myText = "Hello";
24 viewsRoyal.., edited  
Java Language
String firstName = "Royal ";
String lastName = "Riv";
String fullName = firstName + lastName;
System.out.println(fullName);


//output= Royal Riv
24 viewsRoyal.., edited  
Java Language
/* One Value to Multiple Variables
You can also assign the same value to multiple variables in one line:
*/

public class Main {
    
    public static void main(String[] args) {
        
        int a,b,c;
        a=b=c=30;
        System.out.println(a+b+c);
    }
}

//output=90
30 viewsRoyal.., edited  
Java Language
All Java variables must be identified with unique names.

These unique names are called identifiers.

Identifiers can be short names (like x and y) or more descriptive names (age, sum, totalVolume).

Note: It is recommended to use descriptive names in order to create understandable and maintainable code:

Example--

int m = 60;
// not so easy to understand what m actually is

// Good
int minutesPerHour = 60;


The general rules for naming variables are:

Names can contain letters, digits, underscores, and dollar signs
Names must begin with a letter
Names should start with a lowercase letter, and cannot contain whitespace
Names can also begin with $ and _
Names are case-sensitive ("myVar" and "myvar" are different variables)
Reserved words (like Java keywords, such as int or boolean) cannot be used as names
31 viewsRoyal.., edited  
Java Language
// Create integer variables

int length = 4;
int width = 6;
int area;

// Calculate the area of a rectangle

area = length * width;

// Print variables

System.out.println("Length is: " + length);

System.out.println("Width is: " + width);

System.out.println("Area of the rectangle is: " + area);
33 viewsRoyal.., edited  
Java Language
There are eight primitive data types in Java:

Data Type Size Description

byte ➡ 1 byte➡ Stores whole numbers from -128 to 127

short ➡2 bytes ➡Stores whole numbers from -32,768 to 32,767

int ➡4 bytes ➡ Stores whole numbers from -2,147,483,648 to 2,147,483,647

long ➡8 bytes ➡Stores whole numbers from -9,223,372,036,854,775,808 to 9,223,372,036,854,775,807

float ➡4 bytes➡ Stores fractional numbers. Sufficient for storing 6 to 7 decimal digits

double➡ 8 bytes ➡Stores fractional numbers. Sufficient for storing 15 decimal digits

boolean ➡1 bit➡ Stores true or false values

char ➡2 bytes ➡Stores a single character/letter or ASCII values
50 viewsRoyal.., edited  
Java Language
import java.util.Scanner;

public class Main{
public static void main(String[]args)
{
Scanner X= new Scanner(System.in);

{System.out.print("Your name pls: ");}
String name;
name=X.next();
{System.out.print("Hey "+name+" Welcome🤗,\nPlease Enter Group Code: ");}



int code;
code=X.nextInt();
if(code==1010){
System.out.println("Correct Code,Group is open for you✔.");
}else{
System.out.println("Sorry, Wrong Code ❌");
}

}
}
87 viewsRoyal.., edited