What is Java ? ,java introduction,Java definition, Java Fundamental

Author - Shiva Gautam
9/02/2020
63

                   

About Java:-


Java is a complete technology or platform, which is used to create small scale to large scale application’s using Java Programming language, Java Development Kit and Java Frameworks.
Java Technology Provide a complete platform to compile and execute the java program code using JDK and JRE.

Java code converted into byte code by java compiler under JDK.

Java Technology uses JVM (Java virtual machine ) to execute java byte code to any operating system hence Java is platform-independent but JVM dependent. JVM  is part of JRE.
JVM is a subpart of JRE which is also called the virtual operating system of Java.
In the developer machine, JDK and JRE both are required, but in the client machine, only JRE is required.
About Java Programming language:-
Java programming language is an Object-oriented programming language which is used to create a real-world based application for end-users.
Real-world application means the application which will be created for the normal user's for example Skype, Zoom, google meet is the best platform for video and audio conferencing.
Online banking, Whatsapp, Instagram, Facebook, google these all are real-world based application.

History of Java:-
Java programming language was developed by James Gosling and his teams from 1991 to 1995 under the Sun microsystem company. initially, java was named  OAK but oak was reserved hence it renamed  Java. java language is an enhancement of C and C++ language.  

Unique features of Java programming Languages:-

Java Programming language provides better 
1) Security
2) Reusability
3) Accessibility
4) Dynamic memory allocation (RAM) for real-time applications.
5)  Multithreading
6)  Distributed
7) Garbage collector for automatic memory management
8)  Remote programming using RMI
9)  Network Support
10)  Best processing speed under server and operating system.
Java is Platform dependent or Independent?
Java programming language is an operating system independent language because java program will be executed by JVM, not by the operating system.
When we compile Java Program code then it will convert into byte code by Java compiler, Byte code will be executed by JVM (Java Virtual Machine), not by the operating system hence JAVA Byte Code is Operating System free.
1) Hello.java---------------->
     (Compile)---->
2) Byte Code----->
      (Load by JVM ClassLoader) ------> 
3)  JVM---->(convert)--------> byte code to machine code using JIT.
 Machine code using JIT (Just in time compiler)
4)  machine code will be executed by the Operating System.
Java Terminology:-
JDK (Java Development Kit)--->
It provides Java compiler and library to convert Java Code to Byte Code
JRE (Java Runtime Environment):-
It provides a runtime environment to execute java program code.
JVM (Java Virtual Machine):-
It is used to execute Java byte code and converted into machine code using JIT
JNI  (Java Native Interface):-
It contain library for native code (c/c++) code execution. 
JIT (Just In Time Compiler):- 
It is used to convert byte code to machine code under JVM at runtime.
Software Tools For Java:-
........................................................................

How to download Java from the internet:-
https://www.oracle.com/in/java/technologies/javase/javase-jdk8-downloads.html
1 JDK + JRE 
 JDK (Java Development Kit)
it is used to compile java program code to byte code.
.java ----> .class conversion will be managed by JDK.
JRE  (JAVA Runtime Environment)
it is used to execute byte code(class file) to machine code using JVM(Java Virtual Machine).
JVM is the virtual executor for java program code but JVM is operating System dependent. Linux JVM and Windows JVM both will be different.
but .class file is common for all JVM.
note:-  for a developer or learner machine:-  JDK+JRE
for client machine:-   JRE (Java runtime environment)
................................................................................................................................................

How do we check Java is installed in the machine?
go on program files and check Java (JDK+JRE)
How do we check whether the Java path is set or not?
open command prompt and type javac.
if javac describes then the path is set.
internal or external command problem then the path is not set.
How to set the path?
1 temp path:-

  without admin permission, we can set this path .simple copy default path of java
c:/program files/java/jdk/bin
open command prompt type cmd on the run
set path=C:\Program Files\Java\jdk1.8.0_161\bin.
When the command prompt will be closed then the path will reset.
2 permanent paths:-
right click on mycomputer----> properties---> advance system setting--->environment variable----> new 
a window will appear.
variable name:-    path
variable value:-     C:\Program Files\Java\jdk1.8.0_161\bin
press ok, ok and ok
restart command prompt
Video to set path


CREATE the FIRST PROGRAM OF JAVA:-

 1  Open notepad and write code

 class Classname
{
   public static void main(String args[])
   {
          System.out.println("statement");
   }
}
2 Save this program using .java file
    Classname.java 

 3  Compile this program

    javac Classname.java

 4 Execute this program

    java Classname    
Assignment:- 

 WAP to calculate simple interest?
Solution:-

class SI
{   
   public static void main(String args[])
  {
      float p,r,t,si;
      p=10000;
      r=2;
      t=2;
      si=(p*r*t)/100;
      System.out.println("result is ="+si);
   }
}
Write a program to calculate simple interest?
class SI
{
       public static void main(String args[])
    {
        float p=12000.2F,r=2.3F,t=2.5F,si;
        si=(p*r*t)/100;
        System.out.println("P= "+p);
        System.out.println("R= "+r);
        System.out.println("T= "+t);
        System.out.println("Result is "+si);
             }
}
 WAP to reverse a five-digit number without using a loop?
The solution of this program;-
class Reverseexample
{
    public static void main(String args[])
    {
           int num = 12345;
           int a = num%10;
           num = num/10;
           int b = num%10;
           num = num/10;
           int c = num%10;
           num = num/10;
           int d = num%10;
           int e = num/10;
           int rev = a*10000+b*1000+c*100+d*10+e*1;
           System.out.print(rev); 
           }
}
WAP to Swap two numbers?
class Swap
{
     public static void main(String args[])
     {
         int a=100,b=20,c;
         System.out.println("a=" + a+ " b= " +b);
         c=a;
         a=b;
         b=c;
         System.out.println("a=" + a+ " b= " +b);
         
     }
}
Create a Program to print the name, email, mobile, and date of the birth field?
class Biodata
{
  public static void main(String args[])
  {
     String name,email,mobile,dob;
     name= "manish kumar";
     email= "manishkumar@gmail.com";
     mobile= "9812312345";
     dob="10/06/1998";
     System.out.println("name is "+name);
     System.out.println("email is "+email);
     System.out.println("mobile no is "+mobile);
     System.out.println("dob is "+dob);
        }
}
WAP to reverse 7 digit number?
WAP to convert temprature from celsious to  

Fahrenheit 

?
WAP to calculate electricity bill where unit price and total consumption will be assigned by the users?
Complex Number Addition?
class Complex
{
   public static void main(String args[])
   {
      int r1=5,r2=3,i1=2,i2=3,r,i;
      r = r1 + r2;
      i = i1 + i2;
      System.out.println(r1 + "+" + i1 + "i");
      System.out.println(r2 + "+" + i2 + "i");
      System.out.println(r + "+" + i + "i"); 
   }
}                   
                                                                                                     
                                                       NEXT SESSION

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Shiva Gautam

Shiva Gautam

Hi, I'm Shiva Gautam. With over 15 years of diverse experience in various IT domains, I am now an entrepreneur focusing on both training and software development. My expertise spans across multiple technologies, and I've authored numerous articles on subjects including Java, Python, REACT, NODE, ANGULAR, Cloud, software testing, Django framework, C#, Flutter, Salesforce, Ruby on Rails, .NET, AWS, DEVOPS, AI/ML and more. For additional information, please visit shivaconceptsolution.com and kangaroosoftware.net.

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63تعليقات

POST Answer of Questions and ASK to Doubt

  1. Lokesh31 أكتوبر 2020 في 4:30 م

    Q:- Calculate the Simple Intrest ?
    Solution :-

    class Si
    {
    public static void main(String args[])

    {
    float p=20000,r=5,t=2,si;
    si=(p*r*t)/100;
    System.out.println(si);
    }
    }

    ردحذف
  2. Lokesh31 أكتوبر 2020 في 4:32 م

    Q:- WAP to print the Table of Given Number ?
    Solution :-
    class Table
    {
    public static void main(String args[])

    {
    int n=2,ans,i;
    for(i=1;i<=10;i++)
    {
    ans = n*i;
    System.out.println(n + " * " + i + " = " + ans);
    }
    }
    }

    ردحذف
  3. Lokesh31 أكتوبر 2020 في 4:33 م

    Q:- WAP to Print any String ?
    Solution :-
    class Test
    {
    public static void main(String args[])

    {
    System.out.println("hello Java");
    }
    }

    ردحذف
  4. Lokesh31 أكتوبر 2020 في 4:40 م

    Q:- WAP to reverse 7 digit number ?
    Solution:-

    class Reverse
    {
    public static void main(String args[])
    {
    int num = 1234567;
    int a = num%10;
    num = num/10;
    int b = num%10;
    num = num/10;
    int c = num%10;
    num = num/10;
    int d = num%10;
    num = num/10;
    int e = num%10;
    num = num/10;
    int f = num%10;
    num = num/10;
    int g =num/10;
    int rev = a*1000000+b*100000+c*10000+d*1000+e*100+f*10+g*1;
    System.out.print(rev);
    }
    }

    ردحذف
  5. Lokesh31 أكتوبر 2020 في 4:46 م

    Q:- WAP to swap two numbers ?
    Solution:-
    class Swap
    {
    public static void main (string args[])
    {
    int a=100,b=20,c;
    c=a;
    a=b;
    b=c;
    System.out.println(a + " , " +b);
    }
    }

    ردحذف
  6. Unknown2 نوفمبر 2020 في 9:06 م

    class Sc_root
    {
    public static void main(String[] args)
    {
    int n=10, s, c;
    s=n*n;
    c=s*n;
    System.out.println("Sq_root = "+s);
    System.out.println("Cb_root = "+c);
    }
    }

    ردحذف
  7. akshay3 نوفمبر 2020 في 12:41 م

    //WAP to covert cm to inches and inches to cm
    class Inchescm
    {
    public static void main(String args[])
    {
    double inches,cm;
    inches=25;
    cm=2.54*inches;
    inches=2.54/cm;
    System.out.println("result="+cm);
    System.out.println("result="+inches);

    }
    }

    ردحذف
  8. akshay3 نوفمبر 2020 في 12:49 م

    WAP convert inches to cm and cm to inches
    class Inchescm
    {
    public static void main(String args[])
    {
    double inches,cm;
    inches=25;
    cm=2.54*inches;
    inches=cm*0.393700787402;
    System.out.println("result="+cm);
    System.out.println("result="+inches);

    }
    }

    ردحذف
  9. Shiva Gautam3 نوفمبر 2020 في 5:27 م

    Convert Centimeter to Inch

    class ConvertCtoI
    {
    public static void main(String args[])
    {
    float c=34.567F,i;

    i = c/2.54F;
    System.out.println("Inch value is "+i);



    }



    }

    ردحذف
  10. Shiva Gautam3 نوفمبر 2020 في 5:33 م

    Convert Inch to Centimeter?

    class ConvertItoC
    {
    public static void main(String args[])
    {
    float c,i=56;

    c = i*2.54F;
    System.out.println("CM value is "+c);



    }



    }

    ردحذف
  11. akshay4 نوفمبر 2020 في 2:27 م

    WAP to reverse 7 digit number
    class Reverse
    {
    public static void main(String[]args)
    {
    int num=1234567;
    int a=num%10;
    num=num/10;
    int b=num%10;
    num=num/10;
    int c=num%10;
    num=num/10;
    int d=num%10;
    num=num/10;
    int e=num%10;
    num=num/10;
    int f=num%10;
    num=num/10;
    int g=num%10;
    int rev = a*1000000+b*100000+c*10000+d*1000+e*100+f*10+g*1;
    System.out.println(rev);
    }
    }

    ردحذف
  12. akshay4 نوفمبر 2020 في 3:21 م

    WAP to convert temperature from celsius to Fahrenheit

    class Temperature
    {
    public static void main(String[]args)
    {
    float celsius, fahrenheit;
    fahrenheit=122;
    celsius=(5*fahrenheit-160)/9;
    System.out.println("cel"+celsius);


    }
    }

    ردحذف
  13. Hariom Dhakar26 نوفمبر 2020 في 9:47 ص

    class reverse
    {
    public static void main(String args[])
    {
    int num=1234567;
    int a,b,c,d,e,f,g;
    int reverse;

    a=num%10;
    num=num/10;

    b=num%10;
    num=num/10;

    c=num%10;
    num=num/10;

    d=num%10;
    num=num/10;

    e=num%10;
    num=num/10;

    f=num%10;
    num=num/10;

    g=num%10;
    num=num/10;

    reverse=a*1000000+b*100000+c*10000+d*1000+e*100+f*10+g*1;

    System.out.println(reverse);
    }
    }

    ردحذف
  14. Ayan26 نوفمبر 2020 في 4:26 م

    /* WAP to calculate SI;
    class Si
    {
    public static void main(String args[])
    {
    float p,r,t,si;
    p=100F;
    r=5F;
    t=5F;
    si=(p*r*t)/100;
    System.out.println(+si);
    }
    }

    ردحذف
  15. ayan9 ديسمبر 2020 في 4:58 م

    Write a program to print reverse number.

    class Reversenumber

    {
    public static void main(String args[])

    {

    int num=12345;

    int a,b,c,d,e;

    a=num%10;

    num=num/10;

    b=num%10;

    num=num/10;

    c=num%10;

    num=num/10;

    d=num%10;

    e=num/10;

    int rev= a*10000+b*1000+c*100+d*10+e*1;

    System.out.println(rev);

    }

    }

    ردحذف
  16. ayan9 ديسمبر 2020 في 5:16 م

    write a program to swap two numbers.

    class Swap
    {
    public static void main(String[] args)
    {
    int a=2,b=3,c;
    c=a;
    a=b;
    b=c;
    System.out.println(a);
    System.out.println(b);
    }
    }

    ردحذف
  17. Unknown22 ديسمبر 2020 في 11:51 م

    // WAP TO REVERSE 7 DIGIT NUMBER
    class Reverse7digit
    {
    public static void main(String abc[])
    {
    int num=1234567;
    int a=num%10;
    num=num/10;
    int b=num%10;
    num=num/10;
    int c=num%10;
    num=num/10;
    int d=num%10;
    num=num/10;
    int e=num%10;
    num=num/10;
    int f=num%10;
    num=num/10;
    int g=num%10;
    int rev=a*1000000+b*100000+c*10000+d*1000+e*100+f*10+g*1;
    System.out.println("the revese number is" +rev);
    }
    }

    ردحذف
  18. Unknown22 ديسمبر 2020 في 11:54 م

    // WAP TO REVERSE 7 DIGIT NUMBER
    class Reverse7digit
    {
    public static void main(String abc[])
    {
    int num=1234567;
    int a=num%10;
    num=num/10;
    int b=num%10;
    num=num/10;
    int c=num%10;
    num=num/10;
    int d=num%10;
    num=num/10;
    int e=num%10;
    num=num/10;
    int f=num%10;
    num=num/10;
    int g=num%10;
    int rev=a*1000000+b*100000+c*10000+d*1000+e*100+f*10+g*1;
    System.out.println("the revese number is" +rev);
    }
    }

    ردحذف
  19. Unknown24 ديسمبر 2020 في 12:18 ص

    //WAP to calculate electricity bill where unit price and total consumption will be assigned by the users?
    import java.util.Scanner;
    class Bill
    { ;
    public static void main(String abc[])
    {
    int a;//unit price
    int b;//unit consumption
    Scanner sc = new Scanner(System.in);
    System.out.println("unit price");
    a= sc.nextInt();
    System.out.println("unit consumption");
    b= sc.nextInt();
    int c;//total consumption
    c=a*b;
    System.out.println("total cost of consumption is "+c);
    }
    }

    ردحذف
  20. Unknown26 يناير 2021 في 1:31 ص

    kinjal
    //WAP to SWAP two numbers-

    class Swap
    {

    public static void main(String[] args)
    {

    int x = 100, y = 200;

    System.out.println("Before Swap");
    System.out.println("x = " + x);
    System.out.println("y = " + y);

    int temp = x;
    x = y;
    y = temp;

    System.out.println("After swap");
    System.out.println("x = " + x);
    System.out.println("y = " + y);
    }
    }

    ردحذف
  21. Abhishek singh chauhan26 يناير 2021 في 8:02 م

    WAP two number swap



    class AddTwoNumbers {

    public static void main(String[] args) {

    int num1 = 5, num2 = 15, sum;
    sum = num1 + num2;

    System.out.println("Sum of two number: "+sum);
    }
    }

    ردحذف
  22. Abhishek singh chauhan26 يناير 2021 في 8:03 م

    WAP two number swap


    class AddTwoNumbers {

    public static void main(String[] args) {

    int num1 = 5, num2 = 15, sum;
    sum = num1 + num2;

    System.out.println("Sum of two number : "+sum);
    }
    }

    ردحذف
  23. manvi surana26 يناير 2021 في 8:35 م

    Manvi Surana
    Q) Simple Interest
    class Si
    {
    public static void main(String args[])
    {
    int si,p=1000,r=5,t=1;
    si=(p*r*t)/100;
    System.out.println(si);
    }

    }

    ردحذف
  24. Yash Panjre26 يناير 2021 في 8:52 م

    class Simpleintrest
    {
    public static void main(String args[])
    {
    float p=20000,r=4,t=4,si;
    si=(p*r*t)/100;
    System.out.println("simple instrest is"+si);
    }
    }

    ردحذف
  25. Unknown26 يناير 2021 في 9:00 م


    class Simple
    {
    public static void main(String args[])
    {
    int p=5000,r=5,t=2,si;
    si=(p*r*t)/100;
    System.out.println(si);
    }
    }

    ردحذف
  26. Yash Panjre26 يناير 2021 في 9:10 م

    class Swap
    {
    public static void main(String args[])
    {
    int n1=12,n2=6,temp=0;

    temp=n1;
    n1=n2;
    n2=temp;
    System.out.println("n1="+n1+" "+"n2="+n2);
    }
    }

    ردحذف
  27. Unknown27 يناير 2021 في 10:58 م

    nayansi purwar

    Q:- Calculate the Simple Intrest ?
    Solution :-

    public class SI {

    public static void main(String[] args) {

    float si, p=1000;
    float rate=3;
    float time=2;
    si=(p*rate*time)/100;
    System.out.println(si);
    }

    }


    ردحذف
  28. Unknown27 يناير 2021 في 11:00 م

    Q-->WAP to calculate electricity bill where unit price and total consumption will be assigned by the users?

    solution-->
    public class Electricitybill {


    public static void main(String[] args) {

    int Unit_price=8;
    double Total_consumption=340.1;
    double bill=Unit_price*Total_consumption;
    System.out.println("Total Electricity bill:"+bill);
    }

    }


    ردحذف
  29. Unknown27 يناير 2021 في 11:02 م

    #NAYANSI PURWAR

    # WAP to convert temprature from celsious to Fahrenheit ?

    -->

    public class Fahrenheit {


    public static void main(String[] args) {

    int celcius=40;
    int fahrenheit=(celcius*9/5)+32;

    System.out.println("celcius to fahrenheit:"+fahrenheit);
    }

    }



    -->

    ردحذف
  30. Unknown27 يناير 2021 في 11:03 م

    #Nayansi purwar

    #WAP to reverse 7 digit number?


    -->
    public class Reverse{

    public static void main(String[] args)
    {
    int num=1234567;
    int a=num%10;
    num=num/10;
    int b=num%10;
    num=num/10;
    int c=num%10;
    num=num/10;
    int d=num%10;
    num=num/10;
    int e=num%10;
    num=num/10;
    int f=num%10;
    int g=num/10;
    int rev=a*1000000+b*100000+c*10000+d*1000+e*100+f*10+g*1;
    System.out.println(rev);


    }
    }

    ردحذف
  31. kinjal singh sirohi28 يناير 2021 في 12:04 ص

    class Temperature
    {
    public static void main(String[]args)
    {
    float celsius, fahrenheit;
    fahrenheit=122;
    celsius=(fahrenheit-32)*5/9;
    System.out.println("cel"+celsius);


    }
    }

    ردحذف
  32. Mansi Awasthi28 يناير 2021 في 12:15 م

    Mansi Awasthi
    -WAP to reverse 7 digit number

    class ReverseNum
    {
    public static void main(String args[])
    {
    int num=1234567;
    int a=num%10;
    num=num/10;
    int b=num%10;
    num=num/10;
    int c=num%10;
    num=num/10;
    int d=num%10;
    num=num/10;
    int e=num%10;
    num=num/10;
    int f=num%10;
    num=num/10;
    int g=num%10;
    int rev = a*1000000+b*100000+c*10000+d*1000+e*100+f*10+g*1;
    System.out.println(rev);
    }
    }

    ردحذف
  33. Unknown31 يناير 2021 في 8:01 م

    # Noopur Rana
    class SI
    {
    public static void main (String args[])
    {
    float p=18000,r=4,t=5,si;
    si=(p*r*t)/100;
    System.out.println("Simple Interest is:"+si);
    }
    }

    ردحذف
  34. Unknown31 يناير 2021 في 8:47 م

    #Noopur Rana
    #WAP to Swap numbers
    class Swapping
    {
    public static void main(String args[])
    {
    int p=15 , q = 45 , r=30;
    System.out.println("Before Swapping:"+p+" " +q);
    r=p;
    p=q;
    q=r;

    System.out.println("After Swapping:" +p+ " " +q);
    }
    }

    ردحذف
  35. Khushboo Sendre31 يناير 2021 في 9:20 م

    Khushboo Sendre
    class SimpleInterset
    {
    public static void main(String args[])
    {
    float p,r,s,t;
    p=10000;
    r=2;
    t=2;
    s=(p*r*t)/100;
    System.out.println("The simple interset ="+s);
    }
    }

    ردحذف
  36. Khushboo Sendre31 يناير 2021 في 9:28 م

    Khushboo Sendre
    #WAP to reverse a five-digit number without using a loop?
    class Reverse
    {
    public static void main(String args[])
    {
    int num=98765;
    int a = num%10;
    num = num/10;
    int b= num%10;
    num = num/10;
    int c = num%10;
    num = num/10;
    int d =num%10;
    num = num/10;
    int e = num%10;
    num = num/10;

    int rev = a*10000+b*1000+c*100+d*10+e*1;
    System.out.println(rev);
    }
    }

    #WAP to Swap two numbers without third variable?
    class Swap
    {
    public static void main(String args[])
    {
    int a=10,b=20;
    a=a+b;
    b=a-b;
    a=a-b;
    System.out.println(a);
    System.out.println(b);
    }
    }


    #WAP to Swap two numbers with third variable?
    class Swapp
    {
    public static void main(String args[])
    {
    int a=50,b=80,c;
    c=a;
    a=b;
    b=c;
    System.out.println("The result is:"+a+" "+b);
    }
    }


    #Create a Program to print name, email, mobile, and date of the birth field.
    class Bio
    {
    public static void main(String args[])
    {
    String name,email,mobile,dob;
    name="Khushboo Sendre";
    email="khushboo.sendre198@gmail.com";
    mobile="9074897157";
    dob="01.01.1998";

    System.out.println("Name="+name);
    System.out.println("Email="+email);
    System.out.println("Mobile="+mobile);
    System.out.println("DOB="+dob);
    }
    }

    #WAP to reverse 7 digit number?
    class ReverseNum
    {
    public static void main(String args[])
    {
    int num=1234567;

    int a=num%10;
    num=num/10;

    int b=num%10;
    num=num/10;

    int c=num%10;
    num=num/10;

    int d=num%10;
    num=num/10;

    int e=num%10;
    num=num/10;

    int f=num%10;
    num=num/10;

    int g=num%10;
    num=num/10;

    int reverse=a*1000000+b*100000+c*10000+d*1000+e*100+f*10+g*1;
    System.out.println(reverse);
    }
    }

    #WAP to convert temprature from celsious to Fahrenheit ?
    class Fahrenheit
    {
    public static void main(String args[])
    {
    float cel,fahrenheit;
    fahrenheit=640;
    cel=(fahrenheit-32)*5/9;
    System.out.println(cel);
    }
    }

    #WAP to calculate electricity bill where unit price and total consumption will be assigned by the users?
    class Electricity
    {
    public static void main(String args[])
    {
    int unitprice=10,totalconsumption=520,electricitybill;
    electricitybill=unitprice*totalconsumption;
    System.out.println(electricitybill);
    }
    }

    ردحذف
  37. sumit21 فبراير 2021 في 2:00 م

    class example80
    {
    public static void main(String ...arg)
    {
    int a=450,b=568,c;
    c=b;
    b=a;
    a=c;
    System.out.print("value of a ="+a+"\n"+"value of b = "+b);

    }
    }

    ردحذف
  38. Unknown30 مارس 2021 في 11:18 ص





















































    Ankita Verma

    public class BillClass
    {
    public static void main(String args[])
    {
    int unit_price=10;
    double total_consumption=400.3;
    double electricity_bill;
    electricity_bill=unit_price*total_consumption;

    System.out.println("electricity_bill" +electricity_bill);

    }
    }

    ردحذف
  39. Unknown30 مارس 2021 في 11:24 ص

    Ankita Verma
    import java.util.Scanner;

    class SwapClass
    {
    public static void main(String arg[])
    {
    Scanner sc =new Scanner(System.in);
    int y,z;

    System.out.println("enter the value of y=");
    y=sc.nextInt();//Scanner objct to integer
    System.out.println("enter the value of z=");
    z=sc.nextInt();//Scanner object to integer
    y=y+z;
    z=y-z;
    y=y-z;
    System.out.println("Swap the value y & z" + " " + y + " " + z);

    }
    }

    ردحذف
  40. Unknown30 مارس 2021 في 11:27 ص

    Ankita Verma

    class ReverseClass
    {
    public static void main(String arg[])
    {
    long num=1234789;
    long t=num%10;
    num=num/10;
    long u=num%10;
    num=num/10;
    long v=num%10;
    num=num/10;
    long w=num%10;
    num=num/10;
    long x=num%10;
    num=num/10;
    long y=num%10;
    num=num/10;
    long z=num%10;
    num=num/10;
    long rev=t*1000000+u*100000+v*10000+w*1000+x*100+y*10+z*1;
    System.out.println(rev);
    }
    }

    ردحذف
  41. Unknown30 مارس 2021 في 11:30 ص

    Ankita Verma

    class Temperature
    {
    public static void main(String args[])
    {
    float celsious,fahrenheit;
    fahrenheit=24;
    celsious=(5*fahrenheit-160)/9;
    System.out.prinln("cel" +celsious);

    }
    }

    ردحذف
  42. Unknown30 مارس 2021 في 11:32 ص

    Ankita Verma

    class TestClass
    {
    String name, status,salary,doj,mobile,email;
    void display()
    {
    System.out.println("name is"+ name);
    System.out.println("status is" +status);
    System.out.println("email"+email);
    System.out.println("salary =" +salary);
    System.out.println("mobile"+mobile);
    System.out.println("doj"+doj);
    }
    public static void main(String args[])
    {
    TestClass obj=new TestClass();
    obj.name="Ankita";
    obj.status="employee";
    obj.email="ankitaverma.somy@gmail.com";
    obj.salary="Rs.20000";
    obj.mobile="9826145838";
    obj.doj="22/3/2021";
    obj. display();
    }
    }

    ردحذف
  43. Unknown31 مارس 2021 في 12:09 م

    Ankita Verma

    class M1
    {
    public static void main(String arg[])
    {
    long num=12345;

    long v=num%10;
    num=num/10;
    long w=num%10;
    num=num/10;
    long x=num%10;
    num=num/10;
    long y=num%10;
    num=num/10;
    long z=num%10;
    num=num/10;
    long rev=v*10000+w*1000+x*100+y*10+z*1;
    System.out.println(rev);

    long max=0;
    long smax=0;
    if(max<v)
    {
    max=v;
    System.out.println(max);
    smax=w;
    System.out.println(smax);
    }
    }
    }

    ردحذف
  44. Unknown1 أبريل 2021 في 12:47 م

    class SiClass
    {
    public static void main(String args[])
    {
    double si;
    double p=2000;
    float r=5.5F;
    float t=8;
    si=(p*r*t)/100;
    System.out.println(si);
    }
    }

    ردحذف
  45. Unknown1 أبريل 2021 في 12:49 م

    Ankita Verma

    class SiClass
    {
    public static void main(String args[])
    {
    double si;
    double p=2000;
    float r=5.5F;
    float t=8;
    si=(p*r*t)/100;
    System.out.println(si);
    }
    }

    ردحذف
  46. Shiva Gautam3 يوليو 2021 في 5:30 م

    #program to reverse five digit number without using loop

    class ReverseNum
    {
    public static void main(String args[])
    {
    int num=67432;
    System.out.println("Actual number is "+num);
    int a,b,c,d,e,rev;
    a = num%10; //2
    num = num/10; //6743
    b=num%10; //3
    num= num/10; //674
    c = num%10; //4
    num = num/10; //67
    d = num%10; //7
    e = num/10; //6
    rev = a*10000+b*1000+c*100+d*10+e*1;
    System.out.println("Reverse is "+rev);


    }


    }

    ردحذف
  47. Shiva Gautam3 يوليو 2021 في 5:36 م

    #program to calculate electricity bill
    class EBill
    {
    public static void main(String args[])
    {
    float uprice=12.2F,consumption=200,bill;
    bill = uprice*consumption;
    System.out.println("Total electricty bill is "+bill);

    }


    }

    ردحذف
  48. Shubham Singh16 أغسطس 2021 في 12:57 م

    class cal
    {
    public static void main(String args[])
    {
    int n=11;
    int p=23;
    int r=n+p;
    System.out.println("value of first"+p);
    System.out.println("value second"+n);
    System.out.print("r="+r);



    }
    }

    ردحذف
  49. Unknown6 سبتمبر 2021 في 3:53 م

    class ReverseNum
    {
    public static void main(String args[])
    {
    int num=1234567;

    int a=num%10;
    num=num/10;

    int b=num%10;
    num=num/10;

    int c=num%10;
    num=num/10;

    int d=num%10;
    num=num/10;

    int e=num%10;
    num=num/10;

    int f=num%10;
    num=num/10;

    int g=num%10;
    num=num/10;

    int reverse=a*1000000+b*100000+c*10000+d*1000+e*100+f*10+g*1;
    System.out.println(reverse)
    }
    }

    ردحذف
  50. Anjali Chouhan8 أكتوبر 2021 في 1:38 م

    Anjali Chouhan

    class Demo
    {
    public static void main(String args[])
    {
    int a=10;
    int b=20;

    a=a+b;
    b=a-b;
    a=a-b;

    System.out.println("a "+a);

    System.out.println("b "+b);
    }
    }

    ردحذف
  51. Anjali Chouhan9 أكتوبر 2021 في 2:25 م


    Anjali Chouhan

    import java.util.Scanner;
    class SI

    {
    public static void main(String args[])

    {

    int p,r,t,si;
    Scanner sc= new Scanner(System.in);
    System.out.println("Enter your no.p");
    p=sc.nextInt();
    System.out.println("Enter your no.r");
    r=sc.nextInt();
    System.out.println("Enter your no.t");
    t=sc.nextInt();
    si= (p*r*t/100);
    System.out.println("Result is=" + si);
    }
    }

    ردحذف
  52. Anjali Chouhan9 أكتوبر 2021 في 3:01 م

    Anjali Chouhan


    class Rev1
    {
    public static void main(String args[])
    {

    long num=3456789;
    long p=num%10;
    num=num/10;
    long q=num%10;
    num=num/10;
    long r=num%10;
    num=num/10;
    long s=num%10;
    num=num/10;
    long t=num%10;
    num=num/10;
    long u=num%10;
    num=num/10;
    long v=num%10;
    num=num/10;
    long rev=p*1000000+q*100000+r*10000+s*1000+t*100+u*10+v*1;
    System.out.println(rev);


    }
    }

    ردحذف
  53. Anjali Chouhan9 أكتوبر 2021 في 4:52 م

    Anjali Chouhan

    import java.util.Scanner;
    class Detail
    {
    public static void main(String args[])
    {
    String name,email,mobile,dob;
    Scanner sc=new Scanner(System.in);



    System.out.println("Enter your Name" );
    name=sc.nextLine();
    System.out.println("Enter your Email");
    email=sc.nextLine();
    System.out.println("Enter your Mobile" );
    mobile=sc.nextLine();
    System.out.println("Enter your DOB");
    dob=sc.nextLine();
    System.out.println("Enter your name="+ name);


    System.out.println("Enter your email="+ email);

    System.out.println("Enter your mobile="+ mobile);

    System.out.println("Enter your dob="+ dob);
    }
    }

    ردحذف
  54. sam10 أكتوبر 2021 في 1:00 م

    java hiring in chennai

    ردحذف
  55. yogesh seroke13 أكتوبر 2021 في 10:14 ص

    class Swaptwoint
    {
    public static void main(String args[])
    {
    int a,b,c;
    a=10;
    b=20;
    System.out.println("before swaping " + a);
    System.out.println("before swaping " + b);
    c=a;
    a=b;
    b=c;
    System.out.println("after swaping " + a);
    System.out.println("after swaping " + b);
    }
    }

    ردحذف
  56. yogesh seroke13 أكتوبر 2021 في 10:33 ص

    Yogesh seroke
    import java.util.Scanner;
    class Si
    {
    public static void main(String args[])
    {
    int a;//for principle
    float b;//for rate
    int c;//for time
    double si;//for simple interest
    System.out.println("type the value of principle");
    Scanner sc = new Scanner(System.in) ;
    a=sc.nextInt();
    System.out.println("type the value of rate");
    b=sc.nextFloat();
    System.out.println("type the value of time");
    c=sc.nextInt();
    si=(a*b*c)/100;
    System.out.println("the value of Simple interest is " + si);
    }
    }

    ردحذف
  57. yogesh seroke13 أكتوبر 2021 في 10:52 ص

    Yogesh seroke
    import java.util.Scanner;
    class Rev7dnum
    {
    public static void main("String args[])
    {
    System.out.println("type seven digit number in integer");
    int num, a, b, c, d, e, f, g;
    Scanner sc = new Scanner(System.in) ;
    num = sc.nextInt();
    a = num%10;
    num = num/10;
    b=num%10;
    num=num/10;
    c=num%10;
    num=num/10;
    d=num%10;
    num=num/10;
    e=num%10;
    num=num/10;
    f=num%10;
    num=num/10;
    g=num%10;
    num=num/10;
    int rev = a*1000000+b*100000+c*10000+d*1000+e*100+f*10+g*1;
    System.out.println("the reverse number is " + rev) ;
    }
    }

    ردحذف
  58. yogesh seroke13 أكتوبر 2021 في 11:10 ص

    Yogesh seroke
    import java.util.Scanner;
    class Biodata
    {
    public static void main(String args[])
    {
    String name, email;
    String mob, dob;
    System.out.println("type your name");
    Scanner sc = new Scanner(System.in);
    name = sc.nextLine();
    System.out.println("type your email");
    email=sc.nextLine();
    System.out.println("type your mobile number");
    mob=sc.nextLine();
    System.out.println("type your date of birth");
    dob=sc.nextLine();
    System.out.println("your name is " + name);
    System.out.println("your emailid is " + emai);
    System.out.println("your mobile number is " + mob);
    System.out.println("your date of birth is " + dob);
    }
    }

    ردحذف
  59. yogesh seroke13 أكتوبر 2021 في 8:55 م

    import java.util.Scanner;
    class BioData
    {
    public static void main(String args[])
    {
    String name,email,mobile,dob;
    Scanner sc=new Scanner(System.in);
    System.out.println("Enter your Name" );
    name=sc.nextLine();
    System.out.println("Enter your Email");
    email=sc.nextLine();
    System.out.println("Enter your Mobile" );
    mobile=sc.nextLine();
    System.out.println("Enter your DOB");
    dob=sc.nextLine();
    System.out.println("Enter your name="+ name);
    System.out.println("Enter your email="+ email);

    System.out.println("Enter your mobile="+ mobile);

    System.out.println("Enter your dob="+ dob);
    }
    }

    ردحذف
  60. kshitij11 نوفمبر 2021 في 3:17 م

    import java.util.Scanner;
    class Si
    {
    public static void main(String args[])
    {
    float p,r,t,si;
    Scanner sc=new Scanner(System.in);
    System.out.println("enter p");
    p=sc.nextFloat();
    System.out.println("enter t");
    t=sc.nextFloat();
    System.out.println("enter r");
    r=sc.nextFloat();
    si=(p*r*t)/100;
    System.out.println("simple interest is "+si);
    }

    }

    ردحذف
  61. kshitij11 نوفمبر 2021 في 3:18 م

    import java.util.Scanner;
    class Rev
    {
    public static void main(String args[])
    {
    int r,rer;
    Scanner sc=new Scanner(System.in);
    System.out.println("enter any five digit number");
    r=sc.nextInt();
    rer=r%10;
    r=r/10;
    System.out.print(+rer);
    rer=r%10;
    r=r/10;
    System.out.print(+rer);
    rer=r%10;
    r=r/10;
    System.out.print(+rer);
    rer=r%10;
    r=r/10;
    System.out.print(+rer);
    rer=r%10;
    System.out.print(+rer);

    }
    }

    ردحذف
  62. kshitij11 نوفمبر 2021 في 3:21 م

    import java.util.Scanner;
    class Cf
    {
    public static void main(String args[])
    {
    int choice;
    float temp,result;
    Scanner sc=new Scanner(System.in);
    System.out.println("enter 1 to convert celsius to Fahrenheit \nenter 2 to convert Fahrenheit to celsius");
    choice=sc.nextInt();
    switch(choice)
    {
    case 1:
    System.out.println("enter in celsius");
    temp=sc.nextFloat();
    result=(temp*9/5)+32;
    System.out.println("result:- "+result+"°F");
    break;
    case 2:
    System.out.println("enter in Fahrenheit");
    temp=sc.nextFloat();
    result=(temp-32)*9/5;
    System.out.println("result:- "+result+"°C");
    break;
    default:
    System.out.println("invalid input");

    }



    }
    }

    ردحذف
  63. Unknown12 نوفمبر 2021 في 5:25 م

    Sandeep kelwa

    class Result
    {
    public static void main(String args[])
    { int p,m,c,total,per;
    p = 87;
    m = 76;
    c = 65;
    total = p+m+c;
    per = total/3;
    System.out.println("Total is ="+total);
    System.out.println("per is ="+per);
    }
    }

    ردحذف
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