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+---
+slug: endive-1.0
+title: 'Endive 1.0: WebAssembly on the JVM, Now a Bytecode Alliance Project'
+authors: [andreaTP]
+tags: [wasm, endive, release]
+---
+
+We're excited to announce **Endive 1.0**, the first release of the project under the [Bytecode Alliance](https://bytecodealliance.org/). Endive is a pure-Java WebAssembly runtime with zero native dependencies, continuing the work started as Chicory. For background on the move, see the [announcement article](https://bytecodealliance.org/articles/endive-and-the-next-chapter-of-webassembly-on-the-jvm). If you're migrating from Chicory, the [migration guide](/docs/migration/from-chicory) has you covered.
+
+<!-- truncate -->
+
+## WasmGC Host Integration
+
+The Java garbage collector now manages WasmGC objects. Structs, arrays, and externref values that cross the Wasm/Java boundary are standard Java Objects on the JVM heap. No separate GC store, no manual reference tracking. They get collected when unreachable, just like any other object in your application.
+
+The annotation processor supports `externref` as plain `Object`, so host functions work naturally with GC types.
+
+**If you use WasmGC types at the host boundary, your code will need a small update.** Here's what changed.
+
+### Calling exports that use GC types
+
+Use `applyWithRefs` instead of `apply`. It returns a `CallResult` with separate accessors for numeric and reference results:
+
+```java
+// Before: not possible, GC refs were opaque ints
+long[] result = export.apply(args);
+
+// After: GC refs flow as Java Objects
+CallResult result = export.applyWithRefs(new long[]{42, 10}, null);
+WasmStruct point = (WasmStruct) result.refResult(0);
+int x = (int) point.field(0);
+```
+
+Calling `apply()` on a function that involves GC types will throw.
+
+### Building structs and arrays
+
+Old constructors are deprecated. Use the builder:
+
+```java
+// Before
+var struct = new WasmStruct(typeIdx, new long[]{1, 2});
+
+// After: add fields in declaration order
+var struct = WasmStruct.builder()
+    .typeIdx(typeIdx)
+    .addField(42)        // field 0: numeric
+    .addFieldRef(someRef) // field 1: reference
+    .build();
+
+int x = (int) struct.field(0);      // read numeric field
+Object r = struct.fieldRef(1);      // read ref field
+```
+
+`WasmArray` follows the same pattern with `addElement()` / `addElementRef()`.
+
+### Host functions receiving GC types
+
+Override `applyWithRefs` on `WasmFunctionHandle`:
+
+```java
+WasmFunctionHandle myFunc = new WasmFunctionHandle() {
+    @Override
+    public CallResult applyWithRefs(Instance instance, long[] args, Object[] refArgs) {
+        WasmStruct input = (WasmStruct) refArgs[0];
+        // ... process the struct
+        return CallResult.of(new long[]{result}, null);
+    }
+};
+```
+
+See [#55](https://github.com/bytecodealliance/endive/pull/55) for the full set of changes.
+
+## Tail Call Optimizations
+
+Community-contributed fixes have improved tail call correctness, and the compiler now optimizes tail-call dispatch by eliminating unnecessary stack frame allocation. CPython 3.14, which adopted tail calls in its interpreter loop, is the main beneficiary.
+
+## Migrating from Chicory
+
+For most users, migrating is a find-and-replace. Maven coordinates move from `com.dylibso.chicory` to `run.endive`, Java packages move from `com.dylibso.chicory.*` to `run.endive.*`, and two exception classes have been renamed (`ChicoryException` to `WasmEngineException`, `ChicoryInterruptedException` to `WasmInterruptedException`). The [migration guide](/docs/migration/from-chicory) covers the full list, including Maven plugin goals, system properties, and CLI binary names.
+
+If you use WasmGC types at the host boundary, see the section above.
+
+## What's Ahead
+
+Community members have already started prototyping Component Model support at [endive-cm](https://github.com/roastedroot/endive-cm). Anyone interested is welcome to contribute. Follow [#52](https://github.com/bytecodealliance/endive/issues/52) for updates. Cranelift-based native compilation is also in the works, bringing near-native execution speed while preserving the pure-Java packaging experience.
+
+## Acknowledgements
+
+Thank you to every contributor who has shipped code, reported bugs, tested pre-releases, and pushed WebAssembly forward on the JVM. The [adopters list](https://github.com/bytecodealliance/endive/blob/main/ADOPTERS.md), from JRuby to Trino, from Bazel to Apache Camel, is the best evidence that this runtime is solving real problems.
+
+## Getting Started
+
+```xml
+<dependencyManagement>
+    <dependencies>
+        <dependency>
+            <groupId>run.endive</groupId>
+            <artifactId>bom</artifactId>
+            <version>1.0</version>
+            <type>pom</type>
+            <scope>import</scope>
+        </dependency>
+    </dependencies>
+</dependencyManagement>
+
+<dependency>
+    <groupId>run.endive</groupId>
+    <artifactId>runtime</artifactId>
+</dependency>
+```
+
+[Documentation](https://endive.run/docs/) | [GitHub](https://github.com/bytecodealliance/endive)
+
+We'd love to hear what you're building. [Join the conversation on Zulip](https://bytecodealliance.zulipchat.com/#narrow/stream/endive) and let us know how it goes.