[java] Adds MemorySegment support to allow OrtValues greater than 2GB

java/build.gradle

@@ -161,13 +161,14 @@ if (cmakeBuildDir != null) {
 }
 
 dependencies {
-	testImplementation 'org.junit.jupiter:junit-jupiter-api:5.9.2'
-	testRuntimeOnly 'org.junit.jupiter:junit-jupiter-engine:5.9.2'
+	testImplementation 'org.junit.jupiter:junit-jupiter-api:5.14.1'
+	testRuntimeOnly 'org.junit.jupiter:junit-jupiter-engine:5.14.1'
+	testRuntimeOnly 'org.junit.platform:junit-platform-launcher:1.12.2'
 	testImplementation 'com.google.protobuf:protobuf-java:3.25.5'
 }
 
 processTestResources {
-	duplicatesStrategy(DuplicatesStrategy.INCLUDE) // allows duplicates in the test resources
+	duplicatesStrategy = DuplicatesStrategy.INCLUDE // allows duplicates in the test resources
 }
 
 test {

java/src/main/android/ai/onnxruntime/MemorySegmentShim.java

@@ -0,0 +1,65 @@
+/*
+ * Copyright (c) 2025, Oracle and/or its affiliates. All rights reserved.
+ * Licensed under the MIT License.
+ */
+package ai.onnxruntime;
+
+import java.lang.invoke.MethodHandle;
+import java.lang.invoke.MethodHandles;
+import java.lang.invoke.MethodType;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+/**
+ * Wrapper for java.lang.foreign.MemorySegment instances which throws {@link java.lang.UnsupportedOperationException}
+ * as FFM is not supported on Android.
+ */
+final class MemorySegmentShim {
+    private static final Logger logger = Logger.getLogger(MemorySegmentShim.class.getName());
+
+    /**
+     * Constructor which wraps a MemorySegment. Always throws on Android.
+     *
+     * @param segment The memory segment.
+     * @throws UnsupportedOperationException If java.lang.foreign.MemorySegment is not available in the running JDK.
+     */
+    MemorySegmentShim(Object segment) {
+        throw new UnsupportedOperationException("java.lang.foreign.MemorySegment is not available.");
+    }
+
+    /**
+     * Constructor which builds a MemorySegment using the supplied arguments. Always throws on Android.
+     *
+     * @param address The address of the memory.
+     * @param byteSize The size of the memory.
+     * @throws UnsupportedOperationException If java.lang.foreign.MemorySegment is not available in the running JDK.
+     */
+    MemorySegmentShim(long address, long byteSize) {
+        throw new UnsupportedOperationException("java.lang.foreign.MemorySegment is not available.");
+    }
+
+    /**
+     * Always throws {@link UnsupportedOperationException} on Android.
+     * @return The MemorySegment.
+     */
+    Object get() {
+        throw new UnsupportedOperationException("java.lang.foreign.MemorySegment is not available.");
+    }
+
+    /**
+     * Always throws {@link UnsupportedOperationException} on Android.
+     * @return The address of the MemorySegment.
+     */
+    long address() {
+        throw new UnsupportedOperationException("java.lang.foreign.MemorySegment is not available.");
+    }
+
+    /**
+     * Always throws {@link UnsupportedOperationException} on Android.
+     * @return The size of the MemorySegment in bytes.
+     */
+    long byteSize() {
+        throw new UnsupportedOperationException("java.lang.foreign.MemorySegment is not available.");
+    }
+
+}