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

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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:-

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 

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"); 
   }
}                   
                                                                                                     
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63Comments

POST Answer of Questions and ASK to Doubt

  1. 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);
    }
    }

    ReplyDelete
  2. 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);
    }
    }
    }

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

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

    ReplyDelete
  4. 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);
    }
    }

    ReplyDelete
  5. 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);
    }
    }

    ReplyDelete
  6. 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);
    }
    }

    ReplyDelete
  7. //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);

    }
    }

    ReplyDelete
  8. 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);

    }
    }

    ReplyDelete
  9. 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);



    }



    }

    ReplyDelete
  10. 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);



    }



    }

    ReplyDelete
  11. 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);
    }
    }

    ReplyDelete
  12. 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);


    }
    }

    ReplyDelete
  13. 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);
    }
    }

    ReplyDelete
  14. /* 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);
    }
    }

    ReplyDelete
  15. 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);

    }

    }

    ReplyDelete
  16. 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);
    }
    }

    ReplyDelete
  17. // 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);
    }
    }

    ReplyDelete
  18. // 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);
    }
    }

    ReplyDelete
  19. //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);
    }
    }

    ReplyDelete
  20. 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);
    }
    }

    ReplyDelete
  21. 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);
    }
    }

    ReplyDelete
  22. 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);
    }
    }

    ReplyDelete
  23. 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);
    }

    }

    ReplyDelete
  24. 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);
    }
    }

    ReplyDelete

  25. 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);
    }
    }

    ReplyDelete
  26. 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);
    }
    }

    ReplyDelete
  27. 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);
    }

    }


    ReplyDelete
  28. 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);
    }

    }


    ReplyDelete
  29. #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);
    }

    }



    -->

    ReplyDelete
  30. #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);


    }
    }

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


    }
    }

    ReplyDelete
  32. 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);
    }
    }

    ReplyDelete
  33. # 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);
    }
    }

    ReplyDelete
  34. #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);
    }
    }

    ReplyDelete
  35. 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);
    }
    }

    ReplyDelete
  36. 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);
    }
    }

    ReplyDelete
  37. 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);

    }
    }

    ReplyDelete




















































  38. 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);

    }
    }

    ReplyDelete
  39. 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);

    }
    }

    ReplyDelete
  40. 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);
    }
    }

    ReplyDelete
  41. 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);

    }
    }

    ReplyDelete
  42. 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();
    }
    }

    ReplyDelete
  43. 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);
    }
    }
    }

    ReplyDelete
  44. 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);
    }
    }

    ReplyDelete
  45. 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);
    }
    }

    ReplyDelete
  46. #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);


    }


    }

    ReplyDelete
  47. #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);

    }


    }

    ReplyDelete
  48. 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);



    }
    }

    ReplyDelete
  49. 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)
    }
    }

    ReplyDelete
  50. 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);
    }
    }

    ReplyDelete

  51. 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);
    }
    }

    ReplyDelete
  52. 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);


    }
    }

    ReplyDelete
  53. 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);
    }
    }

    ReplyDelete
  54. 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);
    }
    }

    ReplyDelete
  55. 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);
    }
    }

    ReplyDelete
  56. 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) ;
    }
    }

    ReplyDelete
  57. 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);
    }
    }

    ReplyDelete
  58. 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);
    }
    }

    ReplyDelete
  59. 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);
    }

    }

    ReplyDelete
  60. 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);

    }
    }

    ReplyDelete
  61. 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");

    }



    }
    }

    ReplyDelete
  62. 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);
    }
    }

    ReplyDelete
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