With a static initializer that could be achieved.
But we need to import that static member in relevant place to make sure the
class is loaded (and initialised)
package com.mylibrary.internal;
import java.nio.ByteOrder;
// This class is not intended for public use, so we place it in an
'internal' package.
public final class LibraryInitializer {
// A static field that can be referenced.
public static final boolean IS_INITIALIZED;
static {
System.out.println("Library initializer is running...");
if (ByteOrder.nativeOrder() != ByteOrder.LITTLE_ENDIAN) {
throw new ExceptionInInitializerError("Library is incompatible
with non Little-Endian systems.");
}
IS_INITIALIZED = true; // Set to true after successful
initialization
System.out.println("Library initialization successful.");
}
// Private constructor to prevent instantiation.
private LibraryInitializer() {}
}
On Sat, Aug 2, 2025, 7:31 PM leerho (via GitHub) <[email protected]> wrote:
>
> leerho commented on code in PR #675:
> URL:
> https://github.com/apache/datasketches-java/pull/675#discussion_r2249321757
>
>
> ##########
> src/main/java/org/apache/datasketches/hash/MurmurHash3.java:
> ##########
> @@ -306,42 +308,34 @@ public static long[] hash(final byte[] key, final
> int offsetBytes, final int len
>
> //--Hash of
> ByteBuffer---------------------------------------------------
> /**
> - * Hash the remaining bytes of the given ByteBuffer starting at
> position().
> + * Hash the remaining bytes of the given ByteBuffer starting at
> position() ending at limit (exclusive).
> *
> - * @param buf The input ByteBuffer. It must be non-null and non-empty.
> + * @param buf The input ByteBuffer. It must be non-null and non-empty
> and using Little Endian.
>
> Review Comment:
> Hmm. Let me check all the places in /main/ where BB is an import.
>
> I wonder if there is a way to check endianness when the library (jar)
> is loaded into memory. We could check and issue at least a warning.
>
>
>
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