Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
import java.nio.ByteBuffer;

public class Main {
    public static byte[] indexValueForObject(Object obj) {

        byte[] bytes = null;

        if (obj instanceof Double) {

            double d = (Double) obj;
            bytes = ByteBuffer.allocate(4).putDouble(d).array();

            bytes[0] ^= 0xff;

            if (d < 0) {
                bytes[1] ^= 0xff;
                bytes[2] ^= 0xff;
                bytes[3] ^= 0xff;
            }
        }

        else if (obj instanceof Integer) {

            // flip sign bit
            int i = (Integer) obj;

            i ^= 0x80000000;

            bytes = ByteBuffer.allocate(4).putInt(i).array();
        }

        else if (obj instanceof String) {

            bytes = ((String) obj).getBytes();
        }

        return bytes;
    }
}