Question

Using JAVA programming language, create a number system conversion application that will do the following: Convert octal to decimal, Convert octal to binary, Convert octal to hexadecimal.


This is the SAMPLE OUTPUT:

NUMBER SYSTEMS APP (HEXADECIMALNUMBER SYSTEMS)

Operations:

Press [1] –Hexadecimalto DecimalConversion

Press [2] –Hexadecimalto BinaryConversion

Press [3] –Hexadecimalto OctalConversion


Select operation: 1

Enter hexadecimal: 1A5

Decimalequivalent is 421

Answer 1

Answer:

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Java Program to Convert Octal Number to Decimal and vice-versa

In this program, you'll learn to convert octal number to a decimal number and vice-versa using functions in Java.

To understand this example, you should have the knowledge of the following Java programming topics:

Java Methods

Java Operators

Java while and do...while Loop

Example 1: Program to Convert Decimal to Octal

public class DecimalOctal {

public static void main(String[] args) {

int decimal = 78;

int octal = convertDecimalToOctal(decimal);

System.out.printf("%d in decimal = %d in octal", decimal, octal);

}

public static int convertDecimalToOctal(int decimal)

{

int octalNumber = 0, i = 1;

while (decimal != 0)

{

octalNumber += (decimal % 8) * i;

decimal /= 8;

i *= 10;

}

return octalNumber;

}

}