/*Program to Reverse a given no. */importjava.io.*;importjava.lang.*;classReverse{publicstaticvoidmain(String args[])throwsIOException{BufferedReader br=newBufferedReader(newInputStreamReader(System.in));System.out.println("Enter Number: ");int num=Integer.parseInt(br.readLine());int remainder, result=0;while(num>0){
remainder = num%10;
result = result *10+ remainder;
num = num/10;}System.out.println("Reverse number is : "+result);}}
OUTPUT:
javac Reverse.java
java Reverse
Enter Number:
1234
Reverse number is : 4321