How I can convert a decimal number to hexadecimal an vice versa in same program in java ?

Question

I want logic.

Answer 1

The logic is
https://www.geeksforgeeks.org/java-program-for-decimal-to-hexadecimal-conversion/
https://www.tutorialspoint.com/how-to-convert-decimal-to-hexadecimal-in-java
https://www.w3schools.com/java/java_type_casting.asp

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