Java Programming Tutorial - 1
Code :
class mks{
public static void main(String[] args){
System.out.println("Hello Java");
}
}
Output :
Hello Java
import java.util.Scanner;
int X =20;
int Y =20;
int S =20;
int P =20;
System.out.println( ++X );
System.out.println( Y++ );
System.out.println( --S );
System.out.println( P-- );
int A =20;
int B =20;
int C =20;
int D =20;
Java Programming Tutorial - 2
Code :
class mks{
public static void main(String[] args){
int friends;
friends = 13;
System.out.print("I have ");
System.out.print( friends );
System.out.println(" friends.");
}
}
Output :
I have 13 friends.
Java Programming Tutorial - 3
Code :
import java.util.Scanner;
class mks{
public static void main(String[] args){
Scanner mark = new Scanner (System.in);
System.out.println( mark.nextLine() );
}
}
Output :
98 //User Input Value
98
Java Programming Tutorial - 4
Code :
import java.util.Scanner;
class mks{
class mks{
public static void main(String[] args){
Scanner mark = new Scanner (System.in);
double num1, num2, answer;
System.out.println( "Insert First Number : " );
num1=mark.nextDouble();
System.out.println( "Insert Second Number : " );
num2=mark.nextDouble();
answer = num1 + num2 ;
System.out.println( "num1 + num2 : " +answer );
answer = num1 - num2 ;
System.out.println( "num1 - num2 :" +answer );
answer = num1 * num2 ;
System.out.println( "num1* num2 :" +answer );
answer = num1 / num2 ;
System.out.println( "num1 / num2 : " +answer );
answer = num1 % num2 ;
System.out.println( "num1 % num2 : " +answer );
}
double num1, num2, answer;
System.out.println( "Insert First Number : " );
num1=mark.nextDouble();
System.out.println( "Insert Second Number : " );
num2=mark.nextDouble();
answer = num1 + num2 ;
System.out.println( "num1 + num2 : " +answer );
answer = num1 - num2 ;
System.out.println( "num1 - num2 :" +answer );
answer = num1 * num2 ;
System.out.println( "num1* num2 :" +answer );
answer = num1 / num2 ;
System.out.println( "num1 / num2 : " +answer );
answer = num1 % num2 ;
System.out.println( "num1 % num2 : " +answer );
}
}
Output :
Insert First Number :
55
Insert Second Number :
10
num1 + num2 : 65.0
num1 - num2 :45.0
num1 * num2 :550.0
num1 / num2 : 5.5
num1 % num2 : 5.0
55
Insert Second Number :
10
num1 + num2 : 65.0
num1 - num2 :45.0
num1 * num2 :550.0
num1 / num2 : 5.5
num1 % num2 : 5.0
Java Programming Tutorial - 5
Code :
class mks{
public static void main(String[] args){
int X =20;
int Y =20;
int S =20;
int P =20;
System.out.println( ++X );
System.out.println( Y++ );
System.out.println( --S );
System.out.println( P-- );
int A =20;
int B =20;
int C =20;
int D =20;
System.out.println( A+=5 );
System.out.println( B-=5 );
System.out.println( C/=5 );
System.out.println( D*=5 );
System.out.println( B-=5 );
System.out.println( C/=5 );
System.out.println( D*=5 );
}
}
Output :
21
20
19
20
25
15
4
100
20
19
20
25
15
4
100
Java Programming Tutorial - 6
Code :
class mks{
public static void main(String[] args){
int marks = 98; // Value of marks variable
if(marks <= 45){
System.out.println("Fail");
}else if( marks >=46 && marks <= 55){
System.out.println("C");
}else if( marks >=56 && marks <= 65){
System.out.println("B");
}else if( marks >=66 && marks <= 75){
System.out.println("A");
}else if( marks >=90 && marks <= 100){
System.out.println("A+");
}else{
System.out.println("Invalied Marks");
}
}
}
Output :
A+
- && means AND Operator.It checks all the arguments and if all arguments are true it is going inside.
- || means OR Operator.It checks all the arguments.Even if one argument is true it is going inside.
- != means NOT Operator.
- == means Equal Operator.It checks the equality.
Java Programming Tutorial - 7
Code :
class mks{
public static void main(String[] args){
int marks = 4;
switch(marks){
case 1:
System.out.println("Funny");
break;
case 2:
System.out.println("Sad");
break;
case 3:
System.out.println("Good");
break;
case 4:
System.out.println("Angrey");
break;
default:
System.out.println("I don't understand your mood");
break;
}
}
}
Output :
Angrey
