Convert Decimal Integer to Binary Number Example | Java Examples

Algorithm for Convert Decimal integer to Binary Number:
step 1: set i=0
step 2: read num
step 3: create two integer arrays a[],b[] of size 20
step 4: repeat through step- 7 while num greater than 0

step 5: a[i]=num%2
step 6: i=i+1
step 7: num=num/ 2
step 8: set k=i-1
step 9: initialize j=0
step 10: repeat through step-14 while j less than i
step 11: b[j]=a[k]
step 12: print b[i]
step 13: k=k-1
step 14: j=j+ 1
step 15: Exit
Here is the Java Example for Convert Decimal integer to Binary Number:

import java.util.Scanner; 
 public class ConvertDectoOctal 
 { 
                    public static void main(String args[]) 
            { 
                        int r=0,q,o=0,num; 
                        int a[]=new int[10]; 
                        int b[]=new int[10]; 
                        Scanner sl=new Scanner(System.in); 
                        System.out.print("Enter a number : "); 
                        num=sl.nextInt(); 
                        System.out.println("\nEntered Number is :->"+num); 
                        while(num>0) 
                 { 
                         if(num<8) 
                         { 
                               a[o]=num; 
                               o++; 
                               break; 
                         } 
                      else 
                        { 
                                a[o]=num%8; 
                                o++; 
                                num=num/8; 
                        } 
                 } 
                                for(q=o-1;q>=0;q--) 
                                { 
                                     b[r]=a[q] ; 
                                     r++; 
                                 } 
                                     System.out.print("Octal number is :->");  
                                     for(q=0;q<r;q++) 
                                     System.out.print(b[q]); 
           } 
 }