Java convert hex to decimal
public class ConvertHexToDecimal
{
public static void main(String[] args)
{
String strHex = "b";
int decimal = Integer.parseInt(strHex, 16);
System.out.println("Decimal number : " + decimal);
}
}Convert decimal number to binary in java without using array
public class DecimalToBinaryWithoutArray
{
static void toBinary(int num)
{
StringBuilder sb = new StringBuilder();
int a = 0;
while(num > 0)
{
sb.append(num % 2);
a++;
num = num / 2;
}
System.out.println(sb.reverse());
}
public static void main(String[] args)
{
int number = 20;
toBinary(number);
}
}Java program to convert decimal number to binary & count number of 1s
// decimal to binary conversion in java
import java.util.Scanner;
public class DecimalBinaryDemo
{
public static void main(String[] args)
{
int number, count = 0, temp;
String strConvert = "";
Scanner sc = new Scanner(System.in);
System.out.println("Enter a decimal number : ");
number = sc.nextInt();
// decimal to binary java
while(number > 0)
{
temp = number % 2;
if(temp == 1)
{
count++;
}
strConvert = strConvert + " " + temp;
number = number / 2;
}
System.out.println("Decimal to binary in java : " + strConvert);
System.out.println("Number of 1s : " + count);
sc.close();
}
}Java program to convert integer value into binary
import java.util.*;
import java.util.Scanner;
public class IntegerToBinary
{
public static void main(String[] args)
{
int num;
String str = "";
Scanner sc = new Scanner(System.in);
System.out.println("Please enter the a number : ");
num = sc.nextInt();
// convert int to binary java
while(num > 0)
{
int y = num % 2;
str = y + str;
num = num / 2;
}
System.out.println("The binary conversion is : " + str);
sc.close();
}
}Java convert binary to decimal
import java.util.Scanner;
public class BinaryToDecimalDemo
{
public static void main(String[] args)
{
int number, decimal = 0, a = 0;
Scanner sc = new Scanner(System.in);
System.out.println("Please enter binary number: ");
String strBinary = sc.nextLine();
number = Integer.parseInt(strBinary);
while(number != 0){
decimal += (number % 10) * Math.pow(2, a);
number = number / 10;
a++;
}
System.out.println("Decimal number: " + decimal);
sc.close();
}
}Copyright © 2021 Codeinu
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