如何在Python中将整数转换为字节，但在Java中具有相同的行为？

num = 12345
byte_order = 'big'  # 或者使用 'little'
byte_length = num.bit_length() // 8 + 1

byte_array = num.to_bytes(byte_length, byte_order)
print(byte_array)

import java.nio.ByteBuffer;

public class Main {
    public static void main(String[] args) {
        int num = 12345;
        ByteBuffer buffer = ByteBuffer.allocate(4);
        buffer.putInt(num);

        byte[] byteArray = buffer.array();
        System.out.println(byteArray);
    }
}