Java Program to Convert an Integer into Binary.

There are multiple way to Convert an Integer into Binary.

Using Modulo and for loop method :-

A binary number consists of only 0 and 1.
First we Create and assign binary array size data.
Take the number modulo by 2 and store the remainder into an array.
Now convert an integer to binary divide the number by 2 until it becomes 0.
Here we store the remainder into a binary array and pass this into for loop to iterate into reverse order.
Print the binary array data.

Using toBinaryString() method :-

Here use the Integer.toBinaryString() to convert integer to binary.
This method accepts an argument in Int data-type and returns the binary string data.

Syntax :- public static String toBinaryString(int num)

				
					public class ConvertDecimalToBinary {
	
	//Using Modulo and for loop method :-
    public void printBinaryData(int number){
    	System.out.println("Using Modulo and for loop method :-");
        int binary[] = new int[25];
        int index = 0;
        while(number > 0){
            binary[index++] = number%2;
            number = number/2;
        }
        for(int i = index-1;i >= 0;i--){
            System.out.print(binary[i]);
        }
        System.out.println();
    }
     
    public static void main(String a[]){
    	
    	ConvertDecimalToBinary cdtb = new ConvertDecimalToBinary();
        int value=57;
        cdtb.printBinaryData(value);
        
        // toBinaryString method
        System.out.println("from toBinaryString method value :- " + Integer.toBinaryString(value));
    }
}

Output :-
Using Modulo and for loop method :-
111001
from toBinaryString method value :- 111001