Password Encryption techinque in Java ( High Secured using BASE64Encoder)

Hi All,

Here I write a program for Text Encryption using BASE64Encoder concept, Also I used the String conversion, ASCII conversion and Byte conversion finally three levels of BASE64Encoder concept. It's a highly secure encryption technique.

/**
 *
 * @author BALAMURUGAN M.R
 */
import java.util.Scanner;
import java.util.StringTokenizer;
import sun.misc.BASE64Encoder;

public class SkiEncryption {

   static String finalEncode = "", finalDecode = "";
//Method for getting value from user
    public static void main(String arg[]) {
        System.out.println("SKiTECH Encryption Technique");
        System.out.println("Please enter any text for Encryption ");
        Scanner str1 = new Scanner(System.in);
        String name = str1.nextLine();
        String valToEncrypt = name, encryptedValue = "";
        encryptedValue = encryption(valToEncrypt);
        System.out.println("After Encryption value \n " + encryptedValue);

    }
//Method for converting String to ASCII value format
    public static String encryption(String valToEncrypt) {
        String encryptedValue = stringToASCII(valToEncrypt);
        return encryptedValue;
    }
//Method for converting String to ASCII value format
    private static String stringToASCII(String valToEncrypt) {
        String val = "", encrypt = "";
        for (int i = 0; i < valToEncrypt.length(); ++i) {
            char c = valToEncrypt.charAt(i);
            int j = (int) c;
            String byteval = asciiToByte(j);
            val = val + byteval;
        }
        encrypt = encode(val);
        return encrypt;
    }

   //Method for THREE LEVEL OF BASE64Encoder CONVERSION  FOR BYTE CODES
    public static String encode(String val) {
        val = val.trim().toLowerCase();
        try {
            BASE64Encoder encoder = new BASE64Encoder();
            String firstEncode = new String(encoder.encodeBuffer(val.getBytes()));  // 1st level encryption for byte code
            String secEncode = new String(encoder.encodeBuffer(firstEncode.getBytes())); //2nd level encryption for byte code
            finalEncode = encoder.encodeBuffer(secEncode.getBytes()); // 3rd level encryption for byte code

        } catch (Exception e) {
            System.out.println("Encryprtion error  : " + e);
        }
        return finalEncode;
    }

   //Method for converting ASCII to BYTE value format
    public static String asciiToByte(int acii) {

        String by = Integer.toBinaryString(acii);

        return (by + ",");
    }
}

output:

~~~~~~

SKiTECH Encryprtion Technique
Please enter any text for Encryption
krishna
After Encryption value
 VFZSRmQwMVVRWGhOVTNkNFRWUkZkMDFFUlhkTVJFVjRUVVJGZDAxRVJYTk5WRVY0VFVSQmVFMVRk
M2hOVkVGNFRVUkJkMHhFUlhoTg0KUkVWNFRWUkJjMDFVUlhkTlJFRjNUVk4zUFEwSw0K

Generation of Pseudo in Java

Hi All,

Here I write a program for Generation of Pseudo in given limitation in Java :-)

import java.util.Random;
import java.util.Scanner;

public class PseudoNo {

    public static final void main(String... aArgs) {
        System.out.println("Enter the starting digits for Pseudo number ");
        int i1 = new Scanner(System.in).nextInt();
        System.out.println("Enter the ending digits for Pseudo number ");
        int limit = new Scanner(System.in).nextInt();       
        Random randomGenerator = new Random(); //Radom function for finding Pseudo Number
        for (int i = i1; i <= limit; ++i) {
            int randomInt = randomGenerator.nextInt(limit);
            System.out.println("Pseudo Numbers" + randomInt);
        }

        System.out.println("Done :-)");
    }
}

output:

~~~~~~

Enter the starting digits for Pseudo number
20
Enter the ending digits for Pseudo number
30
Pseudo Numbers15
Pseudo Numbers14
Pseudo Numbers3
Pseudo Numbers24
Pseudo Numbers23
Pseudo Numbers8
Pseudo Numbers16
Pseudo Numbers29
Pseudo Numbers10
Pseudo Numbers10
Pseudo Numbers22
Done.

Finding the Square root of a given number using both manual and Java inbuilt functionality

Hi All,

Here I write programs for finding the Square root of a given number using both manual and Java inbuilt functionality :-)

 

import java.util.Scanner;

public class squareRoot {
    public static void main(String args[]) {
        System.out.println("SquareRoot in Java ");       
        Scanner scanner = new Scanner(System.in);
        System.out.println("Enter number to find square root: ");       
        double square = scanner.nextDouble(); //Reading value from console
        double squareRoot = Math.sqrt(square);    // Java inbuilt functionality for squareRoot the given number
        System.out.println("Square root of Given number: " + square + " is -> " + squareRoot);
         System.out.println("");
        
        //Manually calculating SquareRoot of given number 
        System.out.println("Enter number to find square root: ");      
        double square1 = scanner.nextDouble();
        manuallySquare(square1);
    }
    public static void manuallySquare(double square) {
        double x = 1;
        for (int i = 0; i < square; i++) {
            x = 0.5 * (x + square / x);
        }
        System.out.println("Square root of Given number: " + square + " is: -> " + x);
    }
}

Output:

~~~~~~

SquareRoot in Java
Enter number to find square root:
25
Square root of Given number: 25.0 is -> 5.0

Enter number to find square root:
64
Square root of Given number: 64.0 is: -> 8.0

 

String reverses & Digits (Numbers) Reverse functionality in both manual and using Java inbuilt functionality.

Hi All,

Hi All, Here I write programs for the given String Reverse functionality in both manual and Java inbuilt functionality in the same way in Digits (Numbers) also :-)

import java.util.Scanner;

public class reversenum {

    public static void main(String args[]) {
        //Reverse Integer Digits in Java
        System.out.println("Reverse Integer Digits in Java");
        System.out.println("Enter the digits for reverse ");
        Scanner s = new Scanner(System.in);

        int i = reverseDigt(s.nextInt());
        System.out.println("After Reverse given digits :-) ");
        System.out.println(i); 
       
        //Reverse String in Java
        System.out.println("Using String functioality Reverse the String in Java ");
        System.out.println("Please enter any content ");
        Scanner str1 = new Scanner(System.in);
        String name = str1.nextLine();   // reading a string from console
        String reverse1 = new StringBuffer(name).reverse().toString();       //Using inbuild reverse function example 
        System.out.printf("Original String : %s , Reversed String %s  %n", name, reverse1);
      
       
        //manually reverse function example
        System.out.println("Using manually string reverse functionlity in Java ");
        Scanner str2 = new Scanner(System.in);
        String name1 = str2.nextLine();   // reading a string from console
        reverse1 = srtreverse(name1);
        System.out.printf("Original String : %s , Reversed String %s %n", name1, reverse1);
    }

    // function for manually reverse the String
    public static String srtreverse(String source) {
        if (source == null || source.isEmpty()) {
            return source;
        }
        String reverse = "";
        for (int i = source.length() - 1; i >= 0; i--) {
            reverse = reverse + source.charAt(i);
        }

        return reverse;
    }

    // function for manually reverse the digits
    public static int reverseDigt(int x) {

        String st = x + "";
        StringBuffer sb = new StringBuffer(st).reverse();
        return new Integer(sb.toString()).intValue();

    }
}

output:

~~~~~~

Reverse Integer Digits in Java
Enter the digits for reverse
123456
After Reverse given digits :-)
654321
Using String functioality Reverse the String in Java
Please enter any content
skitech
Original String : skitech , Reversed String hcetiks 
Using manually string reverse functionlity in Java
telent
Original String : telent , Reversed String tnelet 

Generating & finding the given number is Prime Numbers or not in Java

Hi All,

A number is called as a prime if it has only two divisors. In other words, a number which is divided only by 1 and itself. i.e.; number of factors for a prime number should only be 5 (1 and itself).

Here I tried to get the number of prime numbers below a given number. and given number is prime number  or not .

import java.util.Scanner;

public class primeno {

    public static void main(String[] args) {

        System.out.println("Please enter the number: ");
        int limit = new Scanner(System.in).nextInt();
        System.out.println("Generate Prime numbers between 1 and " + limit);
        // loop through the numbers one by one
        for (int i = 1; i < limit; i++) {
            boolean isPrimeNumber = true;
            for (int j = 2; j < i; j++) {
                if (i % j == 0) {
                    isPrimeNumber = false;
                    break; // exit the inner for loop
                }
            }
            // print the number if prime
            if (isPrimeNumber) {
                System.out.print(i + " ");
            }
        }
        System.out.println("\n\nFinding given number is prime number or not: ");
        if (finprime(limit)) {
            System.out.println("The given number is a prime number :-) " + limit);
        } else {
            System.out.println("The given number is not a prime number :-( " + limit);
        }
    }

    public static boolean finprime(int x) {
        int i;
        for (i = 2; i < x; i++) {
            if (x % i == 0) {
                break;
            }
        }
        if (i == x) {
            return true;
        }
        return false;
    }
}

out put:

~~~~~~

Please enter the number:
50
Generate Prime numbers between 1 and 50
1 2 3 5 7 11 13 17 19 23 29 31 37 41 43 47

Finding given number is prime number or not:
The given number is not a prime number :-( 50

Finding GCD & LCD for given two numbers in java

Hi All,

The greatest common divisor (gcd), also known as the greatest common factor (gcf), or highest common factor (hcf).of two or more integers (at least one of which is not zero), is the largest positive integer that divides the numbers without a remainder.

The least common multiple  is the smallest positive integer that is a multiple of both the numbers.

import java.util.Scanner;

//main class
public class GCD_LCD {

    private static int lcm;

    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        System.out.print("Enter the number1: ");
        int num1 = input.nextInt();
        System.out.print("Enter the number2: ");
        int num2 = input.nextInt();
        // for GCD
        if (num1 > num2) {
            System.out.println("the GCD of " + num1 + " and " + num2 + " is " + GCD(num1, num2));
        } else {
            System.out.println("the GCD of " + num1 + " and " + num2 + " is " + GCD(num1, num2));
        }

        //For LCD
        LCD(num1, num2);
    }

    public static int GCD(int x, int y) {
        int result;
        if (y == 0) {
            return x;
        }
        result = GCD(y, x % y);
        return result;
    }

    public static int LCD(int x, int y) {
        for (int i = 1; i <= x * y; i++) {
            if (i % x == 0 && i % y == 0) {
                lcm = i;
                break;
            }
        }
        System.out.println("the LCD of " + x + " and " + y + " is " + lcm);
        return 0;

    }
}

output:

~~~~~

Enter the number1: 30
Enter the number2: 72
the GCD of 30 and 72 is 6
the LCD of 30 and 72 is 360

Fibonacci series for given number in Java

Hi All,

Java program to find Fibonacci series of a given number

import java.io.*;
import java.util.*;

public class fibonacci {
public static void main(String[] args) throws Exception {
    BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
    System.out.print("Enter value of n: ");
    String st = reader.readLine();
    int num = Integer.parseInt(st);
    int f1=0,f2=0,f3=1;
    for(int i=1;i<=num;i++){
        System.out.println(f3);
        f1=f2;
        f2=f3;
        f3=f1+f2;
    }
}
}

Output:

~~~~~~

Enter value of n: 5
1
1
2
3
5

 

 

Summation of a given set of Numbers using java (calculate given sum of digits in java)

Hi All,

 Summation of a set of Numbers, It used to calculate the sum of digits of given numbers :)


import java.io.*;

public class Summation {

    public static void main(String arg[]) {
        try {
            BufferedReader din = new BufferedReader(new InputStreamReader(System.in));
            int num, rem, sum;
            System.out.println(" Summation of a set of Numbers ");
           
            System.out.println("Please enter the number the sum of a digit: ");
            num = Integer.parseInt(din.readLine());
            rem = 0;
            sum = 0;

            while (num > 0) {
                rem = num % 10;  //getting remainder value stored in rem variable
                sum = sum + rem; // adding rem values to sum
                num = num / 10; // divide the number by 10 get remove the remainder value
            }

            System.out.println("The total Summation of the digit is : " + sum);
        } catch (IOException e) {
            System.out.println("Wrong Input");
        }
    }
}

output:

 Summation of a set of Numbers
Please enter the number the sum of a digit:
12121
The total Summation of the digit is :7

Factorial number calculation using java with Recursion method and Non-Recursion method

Hi All,

I tried Factorial number calculation using java with Recursion method and non-Recursion method :-)

import java.io.*;

public class factorial {

 public static void main(String[] args) throws IOException {
        // Using Non Recursion method
 
            BufferedReader object = new BufferedReader(new InputStreamReader(System.in));
            System.out.println("Enter the number");
            int a = Integer.parseInt(object.readLine());
            int fact = 1;
            System.out.println("Using Non Recursion method");
            System.out.println("Factorial of " + a + ":");
            for (int i = 1; i <= a; i++) {
                System.out.print(i + "*");
                fact = fact * i;
            }
            System.out.println(" = "+fact);
   
         // Using Recursion method
      
        int num = new factorial().RecursionFactorial(a);
        System.out.println("Using Recursion method " +num);
    }

    public int RecursionFactorial(int num) {

        int returnValue;

        if (num == 1) {
            return 1;
        }

        returnValue = RecursionFactorial(num - 1) * num;

        return returnValue;

    }
}

output:

Enter the number
8
Using Non Recursion method
Factorial of 8:
1*2*3*4*5*6*7*8* = 40320
Using Recursion method 40320

 

 

 

Swaping two numbers using temporary variable also without temporary variable in java

Hi All, 

Here I am tried swap two numbers using temporary variable also without temporary variable :)

public class swapTwoNos {
   
    public static void main(String[] args){
       
        // Using temporary variable for swapping two numbers        
        int var1=50;
        int var2=100;
        System.out.println("Using temporary variable for swapping two numbers");
        System.out.println("");
        System.out.println(" Before swapping numbers  \n var1 :"+var1+" var2 :"+var2);
        swap(var1,var2); // calling swap function for exchage the values
        withoutTemp(var1,var2);
    }

    private static void swap(int var1, int var2) {
       int temp =var1;
       var1=var2;
       var2=temp;
       System.out.println("After swapping numbers with temporary variable \n var1 :"+var1+" var2 :"+var2);      
    }

    private static void withoutTemp(int var1, int var2) {
      System.out.println("Using temporary variable for swapping two numbers"); 
      System.out.println("");
       var1 = var1 + var2;
       var2 = var1 - var2;
       var1 = var1 - var2;
       System.out.println("After swapping numbers without temporary variable \n var1 :"+var1+" var2 :"+var2);
    }   
   
}

output:

Using temporary variable for swapping two numbers

 Before swapping numbers 
 var1 :1 var2 :2
After swapping numbers with temporary variable
 var1 :2 var2 :1



Using without temporary variable for swapping two numbers

 After swapping numbers without temporary variable
 var1 :2 var2 :1

Write a Xml File using Java Program in directory also console

Hi All,

Here I try to write a simple XML file using java code.

import java.io.File;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;

import org.w3c.dom.Attr;
import org.w3c.dom.Document;
import org.w3c.dom.Element;

public class xmlWrite {

    public static void main(String argv[]) {

      try {

        DocumentBuilderFactory docFactory = DocumentBuilderFactory.newInstance();
        DocumentBuilder docBuilder = docFactory.newDocumentBuilder();

        // create root elements
        Document doc = docBuilder.newDocument();
        Element rootElement = doc.createElement("Department");
        doc.appendChild(rootElement);

        // create  a employee elements
        Element Empl = doc.createElement("Employee");
        rootElement.appendChild(Empl);

        // set attribute to employee element
        Attr attr = doc.createAttribute("id");
        attr.setValue("1");
        Empl.setAttributeNode(attr);
       

        // firstname elements of employee
        Element fname = doc.createElement("FirtName");
        fname.appendChild(doc.createTextNode("Skitech"));
        Empl.appendChild(fname);

        // lastname elements of employee
        Element lname = doc.createElement("LastName");
        lname.appendChild(doc.createTextNode("krish"));
        Empl.appendChild(lname);

        // nickname elements of employee
        Element pname = doc.createElement("NickName");
        pname.appendChild(doc.createTextNode("bala"));
        Empl.appendChild(pname);

        // salary elements of employee
        Element sal = doc.createElement("salary");
        sal.appendChild(doc.createTextNode("200000"));
        Empl.appendChild(sal);

        // write above details in XML File
        TransformerFactory tF = TransformerFactory.newInstance();
        Transformer trans = tF.newTransformer();
        DOMSource source = new DOMSource(doc);
        StreamResult result = new StreamResult(new File("C:\\file.xml"));

        // Output write to console for your reference
         result = new StreamResult(System.out);

        trans.transform(source, result);

        System.out.println("Your file saved! in the C:\\file.xml location :-)");

      } catch (ParserConfigurationException e) {
        e.printStackTrace();
      } catch (TransformerException t) {
        t.printStackTrace();
      }
    }
}


Output :

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<Department>
    <Employee id="1">
        <FirtName>Skitech</FirtName>
        <LastName>krish</LastName>
        <NickName>bala</NickName>
        <salary>200000</salary>
    </Employee>
</Department>

Reading Xml File using Java Program

Hi All,


Step1: Create a xml file as the xml Standard.

<?xml version="1.0" encoding="UTF-8"?>
<stocks>
       <stock>
              <symbol>Citibank</symbol>
              <price>100</price>
              <quantity>1000</quantity>
       </stock>
       <stock>
              <symbol>Axis bank</symbol>
              <price>90</price>
              <quantity>2000</quantity>
       </stock>
          <stock>
              <symbol>Indian bank</symbol>
              <price>695</price>
              <quantity>1200</quantity>
       </stock>
          <stock>
              <symbol>Canara bank</symbol>
              <price>370</price>
              <quantity>1000</quantity>
       </stock>
          <stock>
              <symbol>Icici    bank</symbol>
              <price>180</price>
              <quantity>3000</quantity>
       </stock>
          <stock>
              <symbol>State bank</symbol>
              <price>990</price>
              <quantity>200</quantity>
       </stock>
</stocks>

Step 2: Save the file as stock.xml (user dependent format).

Java program for read above xml file in console:

import java.io.File;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;

public class xmlRead {

    public static void main(String args[]) {
        try {

            File stocks = new File("C:\\Documents and Settings\\Sify\\Desktop\\stock.xml");
            DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
            DocumentBuilder dBuilder = dbFactory.newDocumentBuilder();
            Document doc = dBuilder.parse(stocks);
            doc.getDocumentElement().normalize();

            System.out.println("XML File " + doc.getDocumentElement().getNodeName());
            NodeList nodes = doc.getElementsByTagName("stock");
            System.out.println("==========================");

            for (int i = 0; i < nodes.getLength(); i++) {
            Node node = nodes.item(i);

                if (node.getNodeType() == Node.ELEMENT_NODE) {
                Element element = (Element) node;
                System.out.println("Stock Name: " + getValue("symbol", element));
                System.out.println("Stock Price: " + getValue("price", element));
                System.out.println("Stock Quantity: " + getValue("quantity", element));
                }
            }
        } catch (Exception ex) {
            ex.printStackTrace();
        }
        }

    private static String getValue(String tag, Element element) {
        NodeList nodes = element.getElementsByTagName(tag).item(0).getChildNodes();
        Node node = (Node) nodes.item(0);
        return node.getNodeValue();
    }
}







output:

XML File stocks
==========================
Stock Name: Citibank
Stock Price: 100
Stock Quantity: 1000
Stock Name: Axis bank
Stock Price: 90
Stock Quantity: 2000
Stock Name: Indian bank
Stock Price: 695
Stock Quantity: 1200
Stock Name: Canara bank
Stock Price: 370
Stock Quantity: 1000
Stock Name: Icici    bank
Stock Price: 180
Stock Quantity: 3000
Stock Name: State bank
Stock Price: 990
Stock Quantity: 200
BUILD SUCCESSFUL (total time: 0 seconds)