# Aatul Palandurkar

## Posts Tagged ‘Java Tutorials’

### Java Program to convert Decimal values to Hexadecimal values

Posted on: April 20, 2016

Objectives :

• How to convert Decimal to Hexadecimal in Java?

### Java Program to convert Decimal values to Hexadecimal values :

```
import java.util.Scanner;

public static void main(String[] args) {

Scanner input = new Scanner(System.in);

System.out.print("Enter decimal number you like: ");
int deci = input.nextInt();

System.out.println("The hexadecimal number for decimal "
+ deci + " is " + convert(deci));
}

public static String convert(int decimal) {
String hex = "";

while (decimal != 0) {
int hexValue = decimal % 16;
decimal = decimal / 16;
}

return hex;
}

public static char toHexadecimal(int hexValue) {
if (hexValue <= 9 && hexValue >= 0) {
return (char) (hexValue + '0');
} else {
return (char) (hexValue - 10 + 'A');
}
}
}

```

Output :
Enter decimal number you like: 1234
The hexadecimal number for decimal 1234 is 4D2

### Java Program to Convert Decimal Number to Roman Number

Posted on: March 28, 2016

Objectives :

• Convert Decimal number to Roman number
• Convert Decimal numeral to Roman numeral
• How to convert a decimal number to roman number
• Write a program that converts a decimal number to Roman number.
• Write a program that converts a decimal number to Roman number. Decimal Number is accepted using Scanner class at the time of execution.
• Write a program that converts a decimal number to Roman number. Decimal Number is accepted as command line input at the time of execution.

Program :

### Java program that converts a decimal number to Roman number. Decimal Number is accepted using Scanner class at the time of execution.

```
&nbsp;

import java.util.Scanner;

public class DecimalToRoman {

private static String toRoman(int num) {
String[] romanCharacters = { "M", "CM", "D", "C", "XC", "L", "X", "IX", "V", "I" };
int[] romanValues = { 1000, 900, 500, 100, 90, 50, 10, 9, 5, 1 };
String result = "";

for (int i = 0; i < romanValues.length; i++) {
int numberInPlace = num / romanValues[i];
if (numberInPlace == 0) continue;
result += numberInPlace == 4 && i > 0? romanCharacters[i] + romanCharacters[i - 1]:
new String(new char[numberInPlace]).replace("\0",romanCharacters[i]);
num = num % romanValues[i];
}
return result;
}

public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.print("Enter a number : ");
int decimal = scanner.nextInt();
System.out.println(toRoman(decimal));
}

}

```

Output :

Enter a number : 1234

MCCXXXIV

### Java program that converts a decimal number to Roman number. Decimal Number is accepted as command line input at the time of execution.

```
public class DecimalToRoman {

private static String toRoman(int num) {
String[] romanCharacters = { "M", "CM", "D", "C", "XC", "L", "X", "IX", "V", "I" };
int[] romanValues = { 1000, 900, 500, 100, 90, 50, 10, 9, 5, 1 };
String result = "";

for (int i = 0; i < romanValues.length; i++) {
int numberInPlace = num / romanValues[i];
if (numberInPlace == 0) continue;
result += numberInPlace == 4 && i > 0? romanCharacters[i] + romanCharacters[i - 1]:
new String(new char[numberInPlace]).replace("\0",romanCharacters[i]);
num = num % romanValues[i];
}
return result;
}

public static void main(String[] args) {
if(args.length<1 || args.length>1){
System.out.println("Wrong input");
}else{
String number = args[0];
int decimal = Integer.parseInt(number);
System.out.println(toRoman(decimal));
}
}

}

```

### Java Program to convert Decimal to Binary

Posted on: March 15, 2016

Objectives :

• Decimal to Binary Conversion
• Converting Decimal to Binary
• Converting Decimal Number to Binary format
• Write a program to convert decimal to binary
• Write a program to convert decimal number to binary format
• Write a program to convert positive decimal number to binary format
• Write a program to convert decimal to binary using Scanner class
• Write a program to convert decimal to binary, take input using Scanner class

Java Program to convert Decimal to Binary :

```public class DecimalToBinary {

public void toBinary(int number){
int binary[] = new int[25];
int n = 0;
// Convert Decimal to Binary
while(number > 0){
binary[n++] = number%2;
number = number/2;
}
// Print Binary number
for(int i = n-1;i >= 0;i--){
System.out.print(binary[i]);
}
}

public static void main(String[] args){
DecimalToBinary obj = new DecimalToBinary();
obj.toBinary(14);
}
}
```

Output :

1110

Java Program to convert Decimal to Binary using Scanner class :

```
import java.util.Scanner;

public class DecimalToBinary {

public void toBinary(int number){
int binary[] = new int[14];
int n = 0;

// Convert Decimal to Binary
while(number > 0){
binary[n++] = number%2;
number = number/2;
}

// Print Binary Number
for(int i = n-1;i >= 0;i--){
System.out.print(binary[i]);
}
}

public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.print("Enter a number: ");
int num= scanner.nextInt();
DecimalToBinary obj = new DecimalToBinary();
obj.toBinary(num);

}
}

```

Output :

Enter a number: 14

1110

### Core Java Workshop at TGPCET

Posted on: March 26, 2013

Conducted a Workshop on Core Java at Tulsiramji Gaikwad Patil College of Engineering & Technology, Nagpur on 25 Mar. 2013 & 26 Mar. 2013. It was nice to provide Classroom Training & Workshop on Core Java to students of TGPCET.

Have a look at glimpse of workshop here :

Watch this as You Tube video:

### Follow me on Java Beginners Tutorial

Posted on: July 9, 2012

Java Beginners Tutorial

Hey friends,

One great news, I received an offer to join the esteem team of tech bloggers / writers of Java Beginners Tutorial.

I have accepted the offer, and now I will be posting tutorials, tips & tricks, source codes, many more stuffs related to Java, Android & other technologies. I have also received the mail with user id & password from Java Beginners Tutorial.

I would love to write for such a nice technology forum. It will be a great experience for me too. Thanks a lot Admin –  Java Beginners Tutorial.

Now you can read my blogs at  Java Beginners Tutorial too & can follow me there.

Posted from WordPress for Android