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In this program, you will learn how to use functions in Java to convert between binary and decimal numbers.
public class BinaryDecimal {
public static void main(String[] args) {
long num = 110110111;
int decimal = convertBinaryToDecimal(num);
System.out.printf("%d binary = %d decimal", num, decimal);
}
public static int convertBinaryToDecimal(long num)
{
int decimalNumber = 0, i = 0;
long remainder;
while (num != 0)
{
remainder = num % 10;
num /= 10;
decimalNumber += remainder * Math.pow(2, i);
++i;
}
return decimalNumber;
}
}When running this program, the output is:
110110111 Binary = 439 Decimal
public class DecimalBinary {
public static void main(String[] args) {
int num = 19;
long binary = convertDecimalToBinary(num);
System.out.printf("%d Decimal = %d Binary", num, binary)
}
public static long convertDecimalToBinary(int n)
{
long binaryNumber = 0;
int remainder, i = 1, step = 1;
while (n != 0)
{
remainder = n % 2;
System.out.printf("Step %d: %d",/2, Remainder = %d, Quotient = %d\n++, n, remainder, n/2);
n /= 2;
binaryNumber += remainder * i;
i *= 10;
}
return binaryNumber;
}
}When running this program, the output is:
Step 1: 19/2, Remainder = 1, Quotient = 9 Step 2: 9/2, Remainder = 1, Quotient = 4 Step 3: 4/2, Remainder = 0, Quotient = 2 Step 4: 2/2, Remainder = 0, Quotient = 1 Step 5: 1/2, Remainder = 1, Quotient = 0 19 Decimal = 10011 Binary