Tag: java conversion program

In this tutorial, we will write a Java Program to Convert a Binary Number to Hexadecimal Number. Before that, you must have knowledge of the following topics in java.

• Java operator
• Java while loop

Binary number

The binary numbers are based on 0 and 1, so it is a base 2 number. They are the combination of 0 and 1. For example, 1001, 110101, etc.

Hexadecimal number

The hexadecimal number is represented with a base of 16. It has digits from 0 to 15 to represent, However after 9 the values are represented in Alphabet till 15 such as 10 is represented as A, 11 as B, 12 as C, 13 as D, 14 as E, and 15 as F.

Input: 11011111
Output: DF

Input: 10001101
Output: 8D

Now let us go through a program for Binary to hexadecimal conversion in java.

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Java Program to Convert Binary to Hexadecimal using While loop

import java.util.Scanner;

public class Main
{
  public static void main(String[] args)
  {
    int[] hexaDecnum = new int[1000];
    int i = 1, j = 0, rem, decNum = 0, binary;

    Scanner in = new Scanner(System.in);

    System.out.print("Enter a Binary Number: ");
    binary = in .nextInt();

    while (binary > 0)
    {
      rem = binary % 2;
      decNum = decNum + rem * i;
      i = i * 2;
      binary /= 10;
    }

    i = 0;

    while (decNum != 0)
    {
      hexaDecnum[i] = decNum % 16;
      decNum = decNum / 16;
      i++;
    }

    System.out.print("Equivalent Hexadecimal value: ");
    for (j = i - 1; j >= 0; j--)
    {
      if (hexaDecnum[j] > 9)
        System.out.print((char)(hexaDecnum[j] + 55) + "\n");
      else
        System.out.print(hexaDecnum[j] + "\n");
    }
  }
}

Output:

Enter a Binary Number: 1010
Equivalent Hexadecimal value: A

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In this tutorial, we will write a Java Program to Convert a Hexadecimal Number to Binary Number. Before that, you must have knowledge of the following topics in java.

• Java operator
• Java while loop

Binary number

The binary numbers are based on 0 and 1, so it is a base 2 number. They are the combination of 0 and 1. For example, 1001, 110101, etc.

Hexadecimal number

The hexadecimal number is represented with a base of 16. It has digits from 0 to 15 to represent, However after 9 the values are represented in Alphabet till 15 such as 10 is represented as A, 11 as B, 12 as C, 13 as D, 14 as E, and 15 as F.

Now let us go through a program for hexadecimal to binary conversion in java.

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Java Program to Convert Hexadecimal to Binary using While loop

import java.util.Scanner;

public class Main
{
  public static int conversionFunc(String hexa)
  {
    String digits = "0123456789ABCDEF";
    hexa = hexa.toUpperCase();
    int result = 0;
    for (int i = 0; i < hexa.length(); i++)
    {
      char c = hexa.charAt(i);
      int d = digits.indexOf(c);
      result = 16 *result + d;
    }

    return result;
  }

  public static void main(String args[])
  {
    String hexDecNum;
    int decnum, i = 1, j;
    int binnum[] = new int[100];
    Scanner scan = new Scanner(System.in);

    System.out.print("Enter Hexadecimal Number: ");
    hexDecNum = scan.nextLine();

    //hexadecimal to decimal
    decnum = conversionFunc(hexDecNum);

    //decimal to binary
    while (decnum != 0)
    {
      binnum[i++] = decnum % 2;
      decnum = decnum / 2;
    }

    System.out.print("Equivalent Binary Value: ");
    for (j = i - 1; j > 0; j--)
    {
      System.out.print(binnum[j]);
    }
  }
}

Output:

Enter Hexadecimal Number: AD
Equivalent Binary Value: 10101101

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This is a Java Program to Convert a Hexadecimal Number to its decimal Equivalent. Before that, you must have knowledge of the following topics in Java.

• Java operator
• Java for loop

Hexadecimal number

The hexadecimal number is represented with a base of 16. It has digits from 0 to 15 to represent, However after 9 the values are represented in Alphabet till 15 such as 10 is represented as A, 11 as B, 12 as C, 13 as D, 14 as E, and 15 as F.

Decimal Number

These are the numbers with a base of 10, which ranges from 0 to 9. These numbers are formed with the combination of 0 to 9 digits such as 24, 345, etc.

Now let us go through a program for Hexadecimal to decimal conversion in java.

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Java Program to Convert Hexadecimal to Decimal using for loop

import java.util.Scanner;

public class Main
{
  public static int conversionFunc(String hexa)
  {
    String digits = "0123456789ABCDEF";
    hexa = hexa.toUpperCase();
    int val = 0;

    for (int i = 0; i < hexa.length(); i++)
    {
      char c = hexa.charAt(i);
      int d = digits.indexOf(c);
      val = 16 *val + d;
    }

    return val;
  }

  public static void main(String args[])
  {
    String hexadeci;
    int decimal;
    Scanner scan = new Scanner(System.in);

    System.out.print("Enter a Hexadecimal Number: ");
    hexadeci = scan.nextLine();

    decimal = conversionFunc(hexadeci);

    System.out.print("Equivalent Decimal Value: " + decimal);
  }
}

Output:

Enter a Hexadecimal Number: 7D
Equivalent Decimal Value: 125

---

This is a Java Program to Convert a Decimal Number to its Hexadecimal Equivalent. Before that, you must have knowledge of the following topics in Java.

• Java operator
• Java while loop

Hexadecimal number

The hexadecimal number is represented with a base of 16. It has digits from 0 to 15 to represent, However after 9 the values are represented in Alphabet till 15 such as 10 is represented as A, 11 as B, 12 as C, 13 as D, 14 as E, and 15 as F.

Decimal Number

These are the numbers with a base of 10, which ranges from 0 to 9. These numbers are formed with the combination of 0 to 9 digits such as 24, 345, etc.

Now let us go through a program for decimal to hexadecimal conversion in java.

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Java Program to Convert Decimal to Hexadecimal using while loop

import java.util.Scanner;

public class Main
{
  public static void main(String args[])
  {
    int decimal, rem;
    String hexdeci = "";

    char hex[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };

    Scanner scan = new Scanner(System.in);

    System.out.print("Enter a Decimal Number: ");
    decimal = scan.nextInt();

    while (decimal > 0)
    {
      rem = decimal % 16;
      hexdeci = hex[rem] + hexdeci;
      decimal /= 16;
    }

    System.out.print("Equivalent Hexadecimal Value: " + hexdeci);
  }
}

Output:

Enter a Decimal Number: 125
Equivalent Hexadecimal Value: 7D

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In this tutorial, we will write a Java Program for the conversion of decimal to hexadecimal using recursion. Before that, you must have knowledge of the following topic in Java.

• java while loop

Hexadecimal number

The hexadecimal number is represented with a base of 16. It has digits from 0 to 15 to represent, However after 9 the values are represented in Alphabet till 15 such as 10 is represented as A, 11 as B, 12 as C, 13 as D, 14 as E, and 15 as F.

Decimal Number

These are the numbers with a base of 10, which ranges from 0 to 9. These numbers are formed with the combination of 0 to 9 digits such as 24, 345, etc.

Now let us go through a program for decimal to hexadecimal conversion in java using recursion.

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Java Program to Convert Decimal to Hexadecimal using Recursion

import java.util.Scanner;

public class Main
{
  char[] charHexa = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };
  int num;
  String hexaDeci = "";

  public static void main(String[] args)
  {
    Main obj = new Main();
    int decimal;
    Scanner sc = new Scanner(System.in);

    System.out.print("Enter decimal number: ");
    decimal = sc.nextInt();

    String hex = obj.hexadecimal(decimal);
    System.out.println("Equivalent Hexadecimal Value: " + hex);

  }

  String hexadecimal(int deci)
  {
    if (deci != 0)
    {
      num = deci % 16;
      hexaDeci = charHexa[num] + hexaDeci;
      deci /= 16;
      hexadecimal(deci);   //recursion call
    }

    return hexaDeci;
  }
}

Output:

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In this tutorial, we will write a program to convert octal to decimal in java. Before that, you must have knowledge of the following topics in C++.

• Java operator
• Java while loop

Octal number

The octal numbers are the numbers with base 8 and use the digits 0 to 7. Example: 8 in decimal is represented as 10 in octal, 25 as 31, and so on.

Decimal Number

These are the numbers with a base of 10, which ranges from 0 to 9. These numbers are formed with the combination of 0 to 9 digits such as 24, 345, etc.

Conversion example:

Input: 23
Output: 19

Let us go through a program for the octal to decimal Conversion in java.

---

Java Program to Convert Octal to Decimal using while loop

import java.util.Scanner;

public class Main
{
  public static void main(String[] args)
  {
    int octalNum, decimalNumber = 0, i = 0;
    Scanner scan = new Scanner(System.in);

    System.out.print("Enter an Octal Number: ");
    octalNum = scan.nextInt();

    while (octalNum != 0)
    {
      decimalNumber += (octalNum % 10) *Math.pow(8, i);
      ++i;
      octalNum /= 10;
    }

    System.out.printf("Equivalent Decimal Number: %d", decimalNumber);
  }
}

Output:

Enter an Octal Number: 23
Equivalent Decimal Number: 19

---

In this tutorial, we will write a program to convert decimal to octal in java. Before that, you must have knowledge of the following topics in C++.

• Java operator
• Java while loop

Octal number

The octal numbers are the numbers with base 8 and use the digits 0 to 7. Example: 8 in decimal is represented as 10 in octal, 25 as 31, and so on.

Decimal Number

These are the numbers with a base of 10, which ranges from 0 to 9. These numbers are formed with the combination of 0 to 9 digits such as 24, 345, etc.

Conversion example:

Input: 19
Output: 23

Let us go through a program for the Decimal to Octal Conversion in java.

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Java Program to Convert Decimal to Octal using while loop

import java.util.Scanner;

public class Main
{
  public static void main(String[] args)
  {
    int decNum, octalNumber = 0, i = 1;
    Scanner scan = new Scanner(System.in);

    System.out.print("Enter a Decimal Number: ");
    decNum = scan.nextInt();

    while (decNum != 0)
    {
      octalNumber += (decNum % 8) *i;
      decNum /= 8;
      i *= 10;
    }

    System.out.printf("Equivalent Octal value: %d", octalNumber);
  }
}

Output:

Enter a Decimal Number: 19
Equivalent Octal value: 23

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In this tutorial, we will write a java program to convert a binary number into octal using while loop. Before that, you must have knowledge of the following topics in C++.

• C++ operator
• C++ while loop

Binary number

The binary numbers are based on 0 and 1, so it is a base 2 number. They are the combination of 0 and 1. For example, 1001, 110101, etc.

Octal number

The octal numbers are the numbers with base 8 and use the digits 0 to 7. Example: 8 in decimal is represented as 10 in octal, 25 as 31, and so on.

Let us go through a program for the Binary to Octal Conversion in java.

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Java Program to Convert Binary to Octal using while loop

import java.util.Scanner;

public class Main
{
  public static void main(String args[])
  {
    int bin, rem, i = 0;
    int octalNum = 0, deciNum = 0;
    Scanner sc = new Scanner(System.in);

    System.out.print("Enter a Binary Number: ");
    bin = sc.nextInt();

    while (bin != 0)
    {
      deciNum += (bin % 10) *Math.pow(2, i);
      ++i;
      bin /= 10;
    }

    i = 1;

    while (deciNum != 0)
    {
      octalNum += (deciNum % 8) *i;
      deciNum /= 8;
      i *= 10;
    }
    
    System.out.print("Equivalent Octal Value: " + octalNum);
    
  }
}

Output:

Enter a Binary Number: 1010
Equivalent Octal Value: 12

---

In this tutorial, we will write a java program to convert a octal number into binary using while loop. Before that, you must have knowledge of the following topics in C++.

• C++ operator
• C++ while loop

Binary number

The binary numbers are based on 0 and 1, so it is a base 2 number. They are the combination of 0 and 1. For example, 1001, 110101, etc.

Octal number

The octal numbers are the numbers with base 8 and use the digits 0 to 7. Example: 8 in decimal is represented as 10 in octal, 25 as 31, and so on.

Let us go through a program for the Ocatal to Binary Conversion in java.

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Java Program to Convert Octal number to Binary Number

import java.util.Scanner;

public class Main
{
  public static void main(String args[])
  {
    int octalNum, rem, i = 0;
    int bin = 0, deciNum = 0;
    Scanner sc = new Scanner(System.in);

    System.out.print("Enter a Octal Number: ");
    octalNum = sc.nextInt();

    while (octalNum != 0)
    {
      deciNum += (octalNum % 10) *Math.pow(8, i);
      ++i;
      octalNum /= 10;
    }

    i = 1;

    while (deciNum != 0)
    {
      bin += (deciNum % 2) *i;
      deciNum = deciNum / 2;
      i *= 10;
    }

    System.out.print("Equivalent Binary Value: " + bin);

  }
}

Output:

Enter a Octal Number: 12
Equivalent Binary Value: 1010

---

In this tutorial, we will write a java program to convert binary to decimal using while loop. Before that, you must have knowledge of the following topics in java.

• Java operator
• Java while loop

Binary number

The binary numbers are based on 0 and 1, so it is a base 2 number. They are the combination of 0 and 1. For example, 1001, 110101, etc.

Decimal Number

These are the numbers with a base of 10, which ranges from 0 to 9. These numbers are formed by the combination of 0 to 9 digits such as 24, 345, etc.

Here is the chart where for the equivalent value of decimal and binary numbers.

Example:

Input: 101
Output: 5

Input: 111
Output: 7

Now let us go through a program for the conversion of binary to decimal in java using while loop.

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Before using a while loop, let us find the conversion of binary number to decimal number by using the parseInt() method of the Integer class.

import java.util.Scanner;

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

    System.out.println("Enter a binary number: ");
    bin = sc.nextLine();

    System.out.println("Equivalent Decimal Value: " + Integer.parseInt(bin, 2));
  }
}

Enter a binary number:
1001
Equivalent Decimal Value: 9

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Java Program to Convert Binary to Decimal using while loop

import java.util.Scanner;

public class Main
{
  public static void main(String args[])
  {
    int bin, decimal = 0, i = 0;
    Scanner sc = new Scanner(System.in);

    System.out.println("Enter a binary number: ");
    bin = sc.nextInt();

    while (bin != 0)
    {
      decimal += ((bin % 10) *Math.pow(2, i));
      bin /= 10;
      i++;
    }

    System.out.println("Equivalent Decimal Value: " + decimal);
  }
}

Output:

Enter a binary number:
1010
Equivalent Decimal Value: 10

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